Surface Resistance Of Films Research Articles

Liquid Binary and Ternary Electrolytes Mixtures for Low-Temperature Sulfurized Carbon Batteries

Active sulfurized carbon (SC) has been proposed as promising alternative to enable sulfur as the next generation cathode material due its ability to confine sulfur and suppresses polysulfide shuttling. Pragmatic cell performance of SC electrodes needs to extend over a wide range of temperatures from -20 °C to 60 °C. Low-temperature performance of SC cells is mainly limited by electrolyte wettability, ionic mobility between the electrodes, and the nature of the formed solid electrolyte interphase. In this work we have utilized electrolyte binary and ternary mixtures based on carbonates, ethers, and fluorinated solvents to enhance the SC cell discharge performance up to -20 °C. To understand the effects of electrolyte mixtures in the cell performance we have utilized electrochemical impedance spectroscopy (EIS) as a function of temperature and voltage. The lower cell resistance translates into a higher rate capability, cyclability, and low-temperature performance. Based on the EIS response and its spectra deconvolution we proposed an apparent electrical equivalent circuit that permits the elucidation of resistance elements and their magnitude such as the ohmic, electron charge transfer, surface film, and mass transport resistance to provide a phenomenological understanding on how the mixtures can enhance the electrochemical performance. Furthermore, differential capacity analysis and Hybrid Pulse Power Characterization (HPPC), are utilized to support the characterization. Finally, best performance electrolyte mixtures were utilized to build >0.5 Ah pouch cells for testing at low temperatures, discharge rates, and pressure conditions.

A Spoof Surface Plasmon Polaritons Filter with Controllable Negative Slope Equalization Based on Surface Resistance

This paper presents a novel spoof surface plasmon polariton (SSPP) filter integrated with controllable negative slope equalization. Different from traditional microwave filters, two microwave functions - amplitude compensation and interference suppression - are integrated into one device by depositing a lossy indium tin oxide (ITO) film on the rectangular corrugated stub of the SSPP unit. The key point of negative slope equalization benefits from the surface resistance of the ITO film, and the circuit model and behavior are analyzed in detail. Based on the principle, a prototype of a SSPP filter operating from S to C band is designed and fabricated. The measurement results show that the attenuation in the passband increases almost linearly from 3.5 GHz (−4.8 dB) to 6.9 GHz (−15.4 dB), indicating that −10.6 dB equalization is achieved. The improved S21 is attributed to the good impedance matching by sputtering the ITO film on the rectangular metal strip rather than the central strip. Due to the natural low-pass property of SSPPs, the high-order parasitic band is suppressed above the cut-off frequency of 8.5 GHz. The analyses, simulations and measurements show that the proposed SSPP filter is provided with an additional ability to compensate for positive amplitude fluctuation in wideband antennas.

Study of Morphology Control of Electro-Deposited Silver on Electro-Chemically Exfoliated Graphene Electrode and Its Conductivity.

Solution-processed graphene is beneficial for large-scale, low-cost production. However, its small lateral size, variable layer thickness, and uncontrollable oxidation level still restrict its widespread electronic application. In this study, a newly developed electrochemical exfoliation process was introduced, and a graphene-patched film electrode was fabricated by interfacial self-assembly. We were able to minimize the deterioration of graphene colloids during exfoliation by voltage and electrolyte modulation, but the patched structure of the graphene electrode still showed low conductivity with numerous inter-sheet junctions. Therefore, we determined the optimal conditions for the growth of fully networked silver structures on the multi-stacked graphene film by direct current electro-deposition, and these silver-graphene composite films showed significantly lowered graphene-colloid-patched film surface resistance.

Exploring the morphological surface resistance and optical absorption of thin black carbon nanotube films for electronic and optoelectronic devices

This study investigates the optical and electrical properties of thin black films of carbon nanotubes (CNTs) fabricated under various conditions to explore their potential integration as either a perfect broadband absorber or enhanced counter electrode. The study involves SEM measurements, surface resistance measurements, and UV–Vis. spectrometer analysis. The results show that the CNT thin films exhibit high electrical conductivity and strong light absorption across various wavelengths. Optically, we investigated the impact of varying the growth temperature and catalyst temperature on the absorption profile of the thin films. The fabricated and deposited CNTs showed broadband absorption spectra, reaching 92.8% of the commercial reference sample, covering both visible and near-infrared spectra. Alternatively, the morphological surface resistance for the CNT thin films recorded agonist commercial CNT samples and FTO-coated glass. An average surface resistance of 20.5 Ω/Sq.

Advanced TiO2/Al2O3 Bilayer ALD Coatings for Improved Lithium-Rich Layered Oxide Electrodes.

Surface modification is a highly effective strategy for addressing issues in lithium-rich layered oxide (LLO) cathodes, including phase transformation, particle cracking, oxygen gas release, and transition-metal ion dissolution. Existing single-/double-layer coating strategies face drawbacks such as poor component contact and complexity. Herein, we present the results of a low-temperature atomic layer deposition (ALD) process for creating a TiO2/Al2O3 bilayer on composite cathodes made of AS200 (Li1.08Ni0.34Co0.08Mn0.5O2). Electrochemical analysis demonstrates that TiO2/Al2O3-coated LLO electrodes exhibit improved discharge capacities and enhanced capacity retention compared with uncoated samples. The TAA-5/AS200 bilayer-coated electrode, in particular, demonstrates exceptional capacity retention (∼90.4%) and a specific discharge capacity of 146 mAh g-1 after 100 cycles at 1C within the voltage range of 2.2 to 4.6 V. The coated electrodes also show reduced voltage decay, lower surface film resistance, and improved interfacial charge transfer resistances, contributing to enhanced stability. The ALD-deposited TiO2/Al2O3 bilayer coatings exhibit promising potential for advancing the electrochemical performance of lithium-rich layered oxide cathodes in lithium-ion batteries.

Investigation of biosensing properties in magnetron sputtered metallized UV-curable polymer microneedle electrodes

Direct management and assessment of metal film properties applied to polymer microneedle (MN) biosensors remains difficult due to constraints inherent to their morphology. By simplifying the three-dimensional structure of MNs and adjusting the deposition time, different thicknesses of Au films were deposited on the UV-cured polymer planar and MN substrates. Several properties relevant to the biosensing of the Au films grown on the polymer surfaces were investigated. The results demonstrate the successful deposition of pure and stable Au nanoparticles onto the surface of UV-curable polymer materials. Initially, Au islands formed within the first minute of deposition; however, as the sputtering time extended, these islands transformed into Au nanoparticle films and disappeared. The hydrophilicity of the surface remains unchanged, while the surface resistance of the thin film decreases with increasing thickness, and the adhesion to the substrate decreases as the thickness increases. In short, a sputtering time of 5–6 min results in Au films with a thickness of 100–200 nm, which exhibit exceptional comprehensive biosensing performance. Additionally, MNs made of Au/UV-curable polymers and produced using magnetron sputtering maintain their original shape, enhance their mechanical characteristics, and gain new functionalities. The Au/UV-curable polymer MNs exhibited remarkable electrode performance despite being soaked in a 37 °C PBS solution for 14 days. These discoveries have important implications in terms of decreasing the dependence on valuable metals in MN biosensors, lowering production expenses, and providing guidance for the choice and design of materials for UV-curable polymer MN metallization films.

A Study on Process Diagnosis Technology to Improve the Reliability of the Etching Process

With the increasing demand for semifductors in various fields, productivity efficiency is emerging as an important issue in semiconductor device manufacturing. To maximize semi-conductor productivity, the semiconductor process must be monitored in real time to continuously reflect the results and utilize them for process stabilization. However, various unexpected variables that occur during the process and errors in their judgment may cause a significant loss in semiconductor productivity. In this study, basic research was conducted on the concept of a diagnostic sensor capable of monitoring the etch amount by changing the surface resistance of a thin film according to the process. In various etching processes, a change in the surface resistance was observed according to the change in the thickness of the thin film, and the correlation between the change in thickness and the change in the physical quantity was studied. The trend of the overall measured values showed linearity. Based on the linear change in the etch amount and surface resistance according to the cycle change, the change in surface resistance according to the etch amount was quantitatively calculated. For the reliability of measurement, the thickness was compared using SEM and an el-lipsometer, and both investigated a thickness of 304 nm.

Intermittent cryogen spray cooling coupled with cold air jet for heat transfer enhancement and cryogen saving of laser dermatology

Laser dermatology has become a convenient technique for medical treatment. However, the epidermal temperature could be increased, leading to intolerable side effects. Cryogen spray cooling (CSC) is implemented to decrease epidermal damage, but the current CSC could increase cryogen wastage. In this study, the CSC is coupled with a cold air jet (CAJ) and is further subjected to intermittent strategy (ICSC) to mitigate film deposition, enhance heat transfer, and save cryogen consumption, through CAJ-to-spray interaction. The surface temperature is measured by a thin film type-T thermocouple, while the heat transfer is estimated by enhanced Duhamel theorem. The film intensity is captured by a digital single-lens reflex camera through the scattering-illumination technique. The results affirmed the benefits of using ICSC/ICSC-CAJ for laser dermatology. It demonstrated lower surface temperature, film intensity, and film resistance as well as higher convection and efficiency compared with CSC. ICSC-CAJ showed the lowest minimum temperature (1.8%–4.9% decrement) and film resistance (3.8%–17.5% decrement), the highest average convective coefficient (84%–92% increment) and efficiency (7%–9% increment) compared with ICSC. Lower frequency and moderate duties would be preferable for ICSC, while higher frequency and lower duties would be preferable for ICSC-CAJ. The efficiency increased with the saving (110% increment), which insights into our understanding of alternative enhancement toward cryogen saving strategy.

Time-Dependent Corrosion Behavior of Aluminum Using Advanced Electrochemical and Characterization Techniques

The time-dependent corrosion behavior of pure aluminum (Al) in a chloride-containing environment was investigated using various electrochemical and characterization techniques for up to 336 h. Transmission electron microscopic and secondary ion mass spectroscopic analysis revealed the continuous dissolution of the surface film over the immersion time. In the meantime, the increasing passive oxide thickness resulted in the surface film resistance enhancement over the immersion time, as indicated by the electrochemical impedance spectroscopic analysis. The electrochemical noise measurements showed an increase in the corrosion kinetics with immersion time until 60 h because of the accelerated localized corrosion in the early stage of immersion. However, an inhibition in corrosion kinetics occurred after longer immersion times due to corrosion product deposition inside the pit.

Ionic liquids-assisted electrolytes in aqueous zinc ion batteries

In the quest for safer and low-cost batteries, zinc ion batteries have remarkable potential in various energy storage applications. However, selecting suitable electrolytes for zinc electrochemistry is challenging due to zinc's passivation and dendritic growth hindering long-term stability. Moreover, the synergy between newly developed electrode materials and electrolytes remains challenging for commercial applications. Therefore, in this study fifty (50) combinations of ionic liquids (ILs) were screened using COSMO-RS simulation to identify suitable ILs for aqueous electrolytes with ZnSO4 salt by comparing activity coefficients at infinite dilution, selectivity, and capacity of ILs to dissolve ZnSO4 salt in the aqueous phase. Further, calcium vanadate (CaV2O6) was synthesized using a modified molten salt method and characterized using a Scanning Electron Microscope and X-ray diffraction to confirm its successful synthesis. Afterwards, the performance of calcium vanadate in aqueous zinc batteries having ILs-assisted electrolytes were also evaluated and compared with conventional electrolyte (aqueous 1 M ZnSO4). Results revealed that ILs based on tetramethyl ammonium cation were suitable for electrolyte applications with ZnSO4 salt. Furthermore, Tetramethylammonium hydrogen sulfate was compared with conventional ZnSO4 electrolyte and an initial discharge capacity of 330 mAh/g for calcium vanadate electrode with ILs-assisted electrolyte was observed as compared to 230 mAh/g with 1 M ZnSO4 aqueous electrolyte. Electrochemical impedance spectroscopy (EIS) measurements showed that ILs-assisted electrolyte's charge transfer and surface film resistance were lower than the conventional electrolyte. However, additional advancement in electrode and electrolytes, i.e. synthesis of electrode materials, and formulation of ILs-assisted electrolytes, may further improve the performance of aqueous zinc ion batteries.

ALD prepared silver nanowire/ZnO thin film for ultraviolet detectors

Ultraviolet (UV) detectors have played an important role in military communication, natural disaster warning, biomedical detection and other fields. In the ultraviolet region, ZnO has the advantages of a wide band gap, high exciton binding energy and intrinsic response band, which is an excellent semiconductor material for ultraviolet detectors. However, to improve the performance of ZnO-based UV detectors, it requires the control of their oxygen vacancy defects by keeping the free carrier concentration at a low level, which can be depleted to achieve the cutoff state of the detector. Therefore, it is necessary to modify the ZnO thin film material to reduce defects and improve crystallinity. In this paper, ZnO films with optical advantages nonpolar structure, AgNW/ZnO enhanced UV detectors and silver nanowires/ZnO (AgNW/ZnO) electrodes were prepared by atomic layer deposition (ALD) and heat treatment. The XPS analysis shows that the crystallinity and oxygen vacancy of ZnO films are improved after heat treatment at 600 ℃. The surface resistance of ZnO films reaches the level of MΩ per centimetre. In the comparison of the properties of the detectors after heat treatment at 500–800 ℃, the detector obtained the best comprehensive performance after heat treatment at 600 ℃. The light responsiveness (5 V, 365 nm) can reach 120.4 A/W, with a light-to-dark current ratio of 6686 times, and a light detection value of 3.4 × 1011 Jones. It is found that the number of deposition cycles has little effect on the transmittance of AgNW/ZnO electrodes in the visible range (380–780 nm), and AgNW/ZnO electrodes for 500 times have excellent thermal stability, which the square resistance is only increased by 1.9 times when heated at 400 ℃ for 180 min.

Li3PO4-Coated Graphite Anode for Thermo-Electrochemically Stable Lithium-Ion Batteries

Extensive research on electrode materials has been sparked by the rising demand for high-energy-density rechargeable lithium-ion batteries (LIBs). Graphite is a crucial component of LIB anodes, as more than 90% of the commercialized cathodes are coupled with the graphite anode. For the advanced graphite anode, the fast charge–discharge electrochemical performance and the thermal stability need to be further improved in order to meet the growing demand. Herein, a graphite anode material’s thermo-electrochemical stability was improved by the surface coating of lithium phosphate (Li3PO4; LPO). The graphite anode with a well-dispersed LPO-coating layer (graphite@LPO) demonstrated significant improvement in the cycle and rate performances. The graphite@LPO sample showed a capacity retention of 67.8% after 300 cycles at 60 °C, whereas the pristine graphite anode failed after 225 cycles, confirming the ameliorated thermo-electrochemical stability and cyclability by LPO coating. The improved thermo-electrochemical stability of the graphite@LPO anode was validated by the full-cell tests as well. The performance enhancement by LPO-coating is due to the suppression of the growth of the surface film and charge-transfer resistances during the repeated cycling, as evidenced by the electrochemical impedance spectroscopy analysis.

Influence of surface topography on the surface film resistance in earth plasters

In this paper, the influence of the surface topography on the surface film resistance that occurs during mass transfer was investigated for earth plasters. Raw earth plaster samples have been made in order to achieve different surface topography. First, the mass transfer wet-cup procedure has been conducted on these raw earth plasters to determine the value of the surface film resistance Zs. Two wind tunnels have been designed to control the nature and the speed of the ventilation flow above the wet-cups to determine the influence of the flow and speed of ventilation on Zs. Results have shown that Zs was not depending on the ventilation speed in laminar mode and that is was about the size of the roughness Ra of the plaster. In a second time, the convective heat transfer coefficient h has been measured by a heat transfer experiment and a FEM model. The heat/mass transfer analogy from Chilton–Colburn has been used to estimate the surface film resistance during heat exchanges Zs∗. Results have shown that Zs and Zs∗ could not be compared.

Corrosion Performance of Ti6Al7Nb Alloy in Simulated Body Fluid for Implant Application Characterized Using Macro- and Microelectrochemical Techniques

In this paper, the applicability of Ti6Al7Nb as a more biocompatible alternative for bone and dental implants than Ti6Al4V and pure titanium in terms of corrosion resistance and electrochemical inertness is investigated. The chemical inertness and corrosion resistance of the Ti6Al7Nb biomaterial were characterized by a multi-scale electrochemical approach during immersion in simulated physiological environments at 37 °C comparing its behavior to that of c.p. Ti, Ti6Al4V, and stainless steel. The establishment of a passive regime for Ti6Al7Nb results from the formation of a thin layer of metal oxide on the surface of the material which prevents the action of aggressive species in the physiological medium from direct reaction with the bulk of the alloy. Conventional electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) provide quantified information on the surface film resistance and its stability domain that encompasses the potential range experienced in the human body; unfortunately, these methods only provide an average estimate of the exposed surface because they lack spatial resolution. Although local physiological environments of the human body are usually simulated using different artificial physiological solutions, and changes in the electrochemical response of a metallic material are observed in each case, similar corrosion resistances have been obtained for Ti6Al7Nb in Hank’s and Ringer’s solutions after one week of immersion (with a corrosion resistance of the order of MΩ cm2). Additionally, scanning electrochemical microscopy (SECM) provides in situ chemical images of reactive metal and passive dielectric surfaces to assess localized corrosion phenomena. In this way, it was observed that Ti6Al7Nb exhibits a high corrosion resistance consistent with a fairly stable passive regime that prevents the electron transfer reactions necessary to sustain the metal dissolution of the bulk biomaterial. Our results support the proposition of this alloy as an efficient alternative to Ti6Al4V for biomaterial applications.

Application of Self-Assembled Polyarylether Substrate in Flexible Organic Light-Emitting Diodes.

The structure used in this study is as follows: substrate/PMMA/ZnS/Ag/MoO3/NPB/Alq3/LiF/Al. Here, PMMA serves as the surface flattening layer, ZnS/Ag/MoO3 as the anode, NPB as the hole injection layer, Alq3 as the emitting layer, LiF as the electron injection layer, and aluminum as the cathode. The properties of the devices with different substrates were investigated using P4 and glass, developed in the laboratory, as well as commercially available PET. After film formation, P4 creates holes on the surface. The light field distribution of the device was calculated at wavelengths of 480 nm, 550 nm, and 620 nm using optical simulation. It was found that this microstructure contributes to light extraction. The maximum brightness, external quantum efficiency, and current efficiency of the device at a P4 thickness of 2.6 μm were 72,500 cd/m2, 1.69%, and 5.68 cd/A, respectively. However, the maximum brightness of the same structure with PET (130 μm) was 9500 cd/m2. The microstructure of the P4 substrate was found to contribute to the excellent device performance through analysis of the AFM surface morphology, film resistance, and optical simulation results. The holes formed by the P4 substrate were created solely by spin-coating the material and then placing it on a heating plate to dry, without any special processing. To confirm the reproducibility of the naturally formed holes, devices were fabricated again with three different emitting layer thicknesses. The maximum brightness, external quantum efficiency, and current efficiency of the device at an Alq3 thickness of 55 nm were 93,400 cd/m2, 1.7%, and 5.6 cd/A, respectively.

Effect of Ni and Fe elements on microstructure and high temperature oxidation behavior of laser cladding aluminum bronze coating

In this work, two kinds of aluminum-bronze coatings were successfully prepared on 316 stainless steel substrate by laser cladding technology. The changes of microstructure and high temperature oxidation behavior of pure aluminum bronze laser cladding layer before and after adding Ni and Fe elements were studied and compared. The results show that a certain amount of κ phase and Fe–Cr phase are constituted in the modified coating with the addition of Ni and Fe elements, which refines the structure and grains. The main components of the oxide layer of the two coatings are Al2O3. In the high temperature oxidation process, both two coatings experienced the formation, spallation, and recovery of an oxide film. The time to form a stable oxide film on the surface of the modified coating is significantly shorter than that of the original coating. As a result of the formation of fine and dense oxide particles on the modified coating's surface, the stability and internal stress resistance of the oxide film is superior. Under the condition of 1000 °C oxidation for 100 h, the oxidation film thickness and oxidation rate constant (kp) of the modified coating are about 0.88 and 0.79 times of that of the original coating. The addition of Ni and Fe can greatly enhance the laser cladding aluminum bronze coating's resistance to high-temperature oxidation.

Modulating the oxygen evolution reaction activity of SrIrO3/Pb(Mg1/3Nb2/3)0.7Ti0.3O3 catalysts using electric-field polarization.

The physical properties of epitaxially grown SrIrO3 thin films are sensitive to external influences. This provides a rare opportunity to study their physical properties as regulated by electric-field polarization of their substrates, thus affecting their oxygen evolution reaction activity. In this work, SrIrO3 films were epitaxially grown on (001)-oriented Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMNPT) single-crystal substrates by pulsed laser deposition. After applying an electric field to the PMNPT along the [001] direction, a lattice strain is induced by rotation of its ferroelectric domains, and this lattice strain is transferred to the interior of the SrIrO3 film through the epitaxial interface. This changes the surface resistivity of the SrIrO3 film and affects its electrocatalytic activity. Our findings suggest that substrate polarization is a feasible method for regulating the electrocatalytic performance of SrIrO3 thin films, and this provides new inspiration for the structural design of other composite catalysts.

A comprehensive study on Co-doped CdS nanostructured films fit for optoelectronic applications

This research explores the novel photo-response properties of cobalt (Co) doped cadmium sulfide (CdS) thin films developed using a facile and cost-effective spray coating technique. The microstructural parameters were evaluated using XRD patterns and the estimated values of crystallite sizes, lattice strains, dislocation densities and induced stress were found to be in the range of 16.1–25.9 nm, 5.9 × 10−3-3.4 × 10−3, 3.8 × 10−3-1.4 × 10−3 and 3.4–1.9 (GPa) for undoped and Co:CdS films, respectively. The optical band gap energies were found to be 2.369, 2.454, 2.469, and 2.501 eV for undoped, 1 wt. %, 3 wt. %, and 5 wt. % Co: CdS films, respectively using Tauc's plots. The values of extinction coefficient (k) and refractive index (n) were observed in the range of 0.45–0.69 and 2.72–3.05 for as-prepared thin films. Photocurrent (Iph)-applied voltage (V) characteristic of the prepared thin films was measured under visible light condition of low power densities (0.15, 0.25, 0.50, 1.57, 2.50 and 5.0 mW/cm2). A remarkable photosensitivity of 0.165–8.842 × 103 (mW/cm2) at 5.0 mW/cm2 was observed. Saturated surface resistivity of as-prepared thin films was measured for pure CdS, which decreases by increasing Co content. External quantum efficiency (EQE) and Detectivity (DET) were enhanced with Co contents. The values of EQE and DET were found to be 1.0 × 103-2.47 × 1012 and 9.88 × 1012 -2.41 × 1012 for 5.0 wt. % Co: CdS films, respectively at power densities (0.15, 0.25, 0.50, 1.57, 2.50 and 5.0 mW/cm2). Our findings proposed the major role of such prepared films in the fabrication of advanced photodetectors suitable for optoelectronic devices developments.

Measurement and Interpretation of the Effect of Electrical Sliding Speed on Contact Characteristics of On-Load Tap Changers

This paper analyzes the effect of sliding speed on the electrical conductivity and friction properties of the contact pair of an on-load tap changer (OLTC). Reciprocating current-carrying tribological tests were carried out on a rod–plate–copper–tin–copper contact galvanic couple at different sliding speeds in air and insulating oil media. The results show that as the sliding speed increases from 24 mm/s to 119 mm/s, the average contact resistance in air increases from 0.2 Ω to 0.276 Ω, and the average contact resistance in insulating oil also increases from 0.2 Ω to 0.267 Ω. At 119 mm/s, the maximum contact resistance in insulating oil reaches 0.3 Ω. The micro-topography images obtained by scanning electron microscopy show that with the increase in sliding speed, the wear mechanisms in the air are mainly abrasive wear and adhesive wear, and the wear mechanisms in oil are mainly layered wear and erosion craters; high sliding speed and arcing promote contact surface fatigue and crack generation. X-ray photoelectron spectroscopy was used to analyze the surface. The copper oxide in the air and the cuprous sulfide in the insulating oil cause the surface film resistance, and the total contact resistance increases accordingly. In addition, the test shows that 119 mm/s in air and 95 mm/s in insulating oil are the speed thresholds. Below these speed thresholds, the increase in contact resistance is mainly caused by mechanical wear. Above these thresholds, the increase in contact resistance is mainly caused by arc erosion and chemical oxidation processes. Non-mechanical factors exacerbate the deterioration of the contact surface and become the main factor for the increase in contact resistance.

Studies on electrolytic and doping behavior of different compounds and their combination on the electrical resistance of polypyrrole film via electrochemical polymerization

AbstractElectrochemical polymerization of pyrrole requires a supporting compound for higher polymer yield. Such compounds have been designated as electrolyte or as dopant. This article examines the roles of such compounds when used individually or in combination for the synthesis of polypyrrole films and polypyrrole coated polyester fabric via in situ electrochemical polymerization. With a view to obtain higher polymer deposition, the effect of 0.15 mM concentration of sodium nitrate, sodium anthraquinone‐2‐sulfonate, p‐toluenesulfonic acid and oxalic acid on the system current and the surface resistance was examined by means of chronoamperometry technique. FTIR and WAXD spectra were used to establish the formation of polypyrrole and doping of different compounds. SEM analysis confirmed deposition of polypyrrole onto the fabric. The charge utilization factor helped in identifying a good dopant. Sulfonic acid‐based salt AQSA‐Na was found to be useful as a dopant as well as an electrolyte. A combination of 0.075 mM sodium nitrate as an electrolyte and 0.075 mM pTSA as a dopant resulted in least surface resistance of polypyrrole film and polypyrrole coated polyester fabric which was almost 88% lower than the polypyrrole coated polyester fabric prepared using the surface resistance of polypyrrole coated polyester fabric via pyrrole vapor polymerization.