Electrode Impedance Research Articles

Osteoporosis Failure of Aluminum Current Collector Induced Crosstalk Degradation at the Imide-Type Lithium Salt Comprised Practical-Level Lithium-Ion Batteries

The atypical failure mechanism caused by the inclusion of lithium bis(fluorosulfonyl)imide (LiFSI) salt in lithium-ion batteries (LIB) is elucidated. When subjected to elevated temperature cycling, the LiFSI salt triggers the degradation of the aluminum current collector, leading to the dissolution of Al ions into the electrolyte. These dissolved Al ions then migrate toward the negative electrode surface where they spontaneously reduce and form Al deposits due to the low electrode potential. This Al deposition further catalyzes the cathodic decomposition of the electrolyte, impacting the interphasial resistance of the negative electrode and consuming both Li ions and electrolyte components. Upon extended cycling with LiFSI-containing electrolytes, a notable decline in the reversible capacity of LIB becomes evident due to cross-talk failure resulting from Al current collector corrosion. Consequently, to enhance the cycling performance of LIBs using LiFSI-based electrolytes, it is necessary to simultaneously prevent Al corrosion and subsequent deposition on the surface of the negative electrode.

Preparation of C@C3N4/IL/AuNPS as a sensitive electrochemical sensor for the determination of doxorubicin

Carbon-doped graphitic carbon nitride (C@C3N4) was synthesized through a carbon self-repairing process from which a nanocomposite of C@C3N4, ionic liquid, and gold nanoparticles (C@C3N4/IL/AuNPs) was prepared and used as a sensor for Doxorubicin (DOX) detection. The charge transfer resistance of the glassy carbon electrode (GCE) was decreased from 1.9 to 0.1 kΩ after modification with C@C3N4/IL/AuNPs nanocomposite, while the GCE surface area was enlarged nearly two times by the presence of C@C3N4/IL/AuNPs. The reversible redox peaks were observed for DOX at GCE/C@C3N4/IL/AuNPs with high peak currents nearly 45 times that of the nascent GCE. Scan rate and pH effects revealed a pH-dependent adsorption-controlled process for DOX oxidation. A linear relationship between the oxidation peak current and DOX concentration in the 10–5000 nM range led to a low detection limit of 3 nM. The sensor was selective to measure DOX in real samples within the recovery percentage of 98.16–104.

Performance improvement of oxygen electrode in reversible protonic ceramic electrochemical cell by co-doping of La and F

Reversible protonic ceramic electrochemical cell (R-PCEC) has demonstrated high potential as an energy storage and conversion device. Efforts have primarily concentrated on the development of oxygen electrodes being to increase their performance and reduce performance degradation. In this work, three perovskite materials, namely Ba0.9Co0.2Fe0.7Nb0.1O3-δ (BCFN), Ba0.8La0.1Co0.2Fe0.7Nb0.1O3-δ (BLCFN), and Ba0.8La0.1Co0.2Fe0.7Nb0.1F0.1O2.9-δ (BLCFNF) are investigated. Both doping with La and co-doping with La and F lead to a notable reduction in the average valence states of Fe, Co, and Nb elements, further resulting in an increase in oxygen vacancy concentration, thereby enhancing the oxygen migration ability of the material. The H2O partial pressure does not have a significant impact on the polarization resistance (Rp) of the oxygen electrode. Conversely, the rise in Rp is highly correlated with the decrease in oxygen partial pressure, suggesting that the primary factor influencing the reaction rate of the oxygen electrode process is the exchange of oxygen ions on the surface of the electrode. BLCFNF exhibits the best oxygen migration and surface exchange ability, resulting in the lowest Rp. When BLCFNF was used as the oxygen electrode in a R-PCEC with the humidity air (10%H2O) and humidified H2 (3%H2O) as oxidant and fuel, respectively, it exhibits the highest maximum power density of 472 mW cm−2, and a current density of −682.6 mA cm−2 (1.3 V) at 650 °C. In addition, BLCFNF also shows good durability in both discharge and electrolysis process. The results indicate that La and F co-doped BLCFNF material is a promising oxygen electrode material for R-PCECs.

Damping Factors in the Interpretation of Geoelectric Data (Case Study: Malalak Agam Rock Structure)

This research aims to optimize the damping factor so that the results of Geoelectric data inversion are stable and in accordance with current geological conditions in Malalak Agam. This type of research is a descriptive research using secondary data in the form of pseudo-type resistance data and electrode spacing obtained from research in the field of Geoelectric exploration in the Department of Physics at Padang State University (UNP). This data is obtained from Geoelectric secondary data and location supporting data. The geoelectric data processing stage is carried out using Res2dinv software which is used to model in 2-D using least-square inversion. The results showed that based on the interpretation of the data, the suitable damping factors in Malalak Agam District, West Sumatra, were the initial damping factor (0.2 – 0.25) and the minimum damping factor (0.01 – 0.1) because on trajectory 2 At the third measurement point 160 meters from point 0 was dominated by limestone and sandstone rocks. The existence of Limestone acts as a slip field, and there is Sandstone right above it which causes large-scale landslides from the first to fifth measurement points (315-160 meters from point 0) and on trajectory 3 at this time there is a landslide with a small volume, it is estimated that the avalanche is at the second measurement point 120 meters from point 0 with an avalanche thickness ranging from approximately 5 meters.

Enhancement of synergistic effects of Cu2O@MnO2@NiO Using Sarcophrynium Brachystachys leaf extract for supercapacitor electrode application

In recent times, the global population explosion and growing depletion of fossil fuels have compelled academics and scientists to do extensive research on alternate energy sources and energy storage techniques. A hydrothermal approach was used to create Copper (II) oxide (Cu2O), Manganese oxide (MnO2), Nickel oxide (NiO), and Copper@Manganese@Nickel (Cu2O@MnO2@NiO) oxide composite electrodes. Sarcophrynium Brachystachys leaves extract was used equally as a bolstering mediator. According to the Debye-Scherer equation, the crystallites size of different nanoparticles (NPs) were established to be 29.45, 24.22, 26.33 and 20.24 nm for Cu2O, MnO2, NiO, and Cu2O@MnO2@NiO, respectively, based on X-ray diffraction (XRD) experiments. According to electrochemical examinations, assessed specific capacitances for Cu2O, MnO2, NiO, and Cu2O@MnO2@NiO obtained by cyclic voltammetry (CV) using 1.00 mV/s scan rates are 785, 955, 825 and 1092 F/g, respectively. The obtained results clearly showed that separate metallic oxides specific capacitances compared with composites specific capacitance using Sarcophrynium Brachystachys leaves extract, a biological and natural constituent stands superior. Sarcophrynium Brachystachys leaves extract enhanced the synergistic impact between constituents’ ions via lowering electrode resistances, raising electrode conductivity and improving electrode characteristics.

Long-term impedance dynamics of cochlear implant electrodes in children

Background. Nowadays in Ukraine, there are about 3 thousand cochlear implant users, and their number is constantly increasing. The internal part of the implant remains in the cochlea throughout the patient’s life, but current data on the state of the electrodes in the long-term period are contradictory. The purpose was to study the impedance dynamics of cochlear implant electrodes during 5 years after surgery in children. Materials and methods. A retrospective study of 58 children with deafness after cochlear implantation was conducted. The changes in the interelectrode impedance and the relationship between them in the different parts of the electrode were evaluated and analyzed 1, 2, 3, and 5 years after the start of electrical stimulation. Results. At 1 year after the connection of the speech processor, an increase in the impedance was recorded in the basal part of the electrode (9–12 channels) relative to the medial and apical part of the cochlea. Over the next year, according to the electric field telemetry data, a significant (p < 0.05) downward trend was noted in the resistance in the basal part of the implant (9–12 electrodes). Within 2–5 years, a gradual decrease in the impedance in the medial and apical parts of the electrode occurred without statistically significant differences. In 29.3 % of cases, there was a tendency to a gradual increase in the impedance on 11–12 electrodes within 3–5 years after surgery. In another 8 patients (13.8 %), a critical increase in the impedance (> 15 kilohm) was detected on one of the contacts in the basal part of the electrode, which required their disconnection or correcting the settings of the speech processor. Conclusions. Regular monitoring of electrode impedance and electrical stimulation levels is recommended, especially during the first 2 years of implant use. This is necessary to improve the performance of the implant, to determine the most comfortable levels and thresholds of volume more accurately, which will improve the sound perception in children after cochlear implantation.

Exploring the impact of synergistic dual-additive electrolytes on 5 V-class LiNi0·5Mn1·5O4 cathodes

Tris (trimethylsilyl) phosphate (TMSP) and tris(2,2,2-trifluoroethyl) phosphate (TTFP) was added to carbonate solvent-based electrolytes as dual-additives to enhance the performance of LiNi0·5Mn1·5O4 (LNMO). The X-ray photoelectron spectroscopy results revealed that both TMSP with high oxidation ability and TTFP with high oxidation resistance participated in the formation of cathode–electrolyte interphase (CEI) films. Electrochemical impedance spectroscopy confirmed that the constructed CEI films had excellent electronic insulation and ionic conductivity, reducing the interfacial impedance of the LNMO electrode, and improving the electrochemical performance of LNMO/Li half-cells and LNMO/Li4Ti5O12 full-cells. As measured by the nuclear magnetic resonance, the incorporation of TMSP and TTFP significantly reduced the HF content in the electrolytes. Therefore, both LNMO/Li half-cells (500 cycles with 95.7% capacity retention) and LNMO/Li4Ti5O12 full-cells (200 cycles with 79.9% capacity retention) displayed higher cycling stabilities at 5 C owing to the synergistic effect of TMSP and TTFP. In comparison, capacity retentions of ∼76.5% after 500 cycles and ∼37.2% after 200 cycles were respectively achieved for the LNMO/Li half-cells and LNMO/Li4Ti5O12 full-cells with the standard electrolyte at 5 C. This study provides strong evidence that additive combinations can improve the electrochemical performance of high-energy and high-voltage cathode materials.

Efficient synthesis strategy and synergistic effect of Ni-Fe-Ru electrode for boosting alkaline water electrolysis

Hydrogen production from alkaline water electrolysis (AWE) has promising potential in energy storage due to the advantages of low cost and large scale, but its bottleneck is the low current density and poor durability of non-precious metal electrodes. Although numerous electrode designs with superior activity have been reported, the complicated synthesis process and refined microstructure have not changed the high preparation cost, high resistance, and poor durability of conventional AWE electrodes. Here, we report an efficient synthesis strategy of high-density Ni-Fe-Ru electrode (particle size < 5 nm) and explore the synergistic effect between Ni-Fe-Ru elements at different potentials. The electrode exhibits excellent OER activity (264 mV@100 mA cm−2, Tafel slope = 49 mV dec−1) and AWE performance (400 mA cm−2@1.89 V), it can work stably for 300 h at 500 mA cm−2, with potential for industrial applications.

A network model to predict ionic transport in porous materials

Understanding the dynamics of electric-double-layer (EDL) charging in porous media is essential for advancements in next-generation energy storage devices. Due to the high computational demands of direct numerical simulations and a lack of interfacial boundary conditions for reduced-order models, the current understanding of EDL charging is limited to simple geometries. Here, we present a network model to predict EDL charging in arbitrary networks of long pores in the Debye-Hückel limit without restrictions on EDL thickness and pore radii. We demonstrate that electrolyte transport is described by Kirchhoff's laws in terms of the electrochemical potential of charge (the valence-weighted average of the ion electrochemical potentials) instead of the electric potential. By employing the equivalent circuit representation suggested by these modified Kirchhoff's laws, our methodology accurately captures the spatial and temporal dependencies of charge density and electric potential, matching results obtained from computationally intensive direct numerical simulations. Our network model provides results up to six orders of magnitude faster, enabling the efficient simulation of a triangular lattice of five thousand pores in 6 min. We employ the framework to study the impact of pore connectivity and polydispersity on electrode charging dynamics for pore networks and discuss how these factors affect the time scale, energy density, and power density of capacitive charging. The scalability and versatility of our methodology make it a rational tool for designing 3D-printed electrodes and for interpreting geometric effects on electrode impedance spectroscopy measurements.

Ti3C2Tx MXene/reduced graphene oxide/cellulose nanocrystal-coated cotton fabric electrodes for supercapacitor applications

Textile-based electrodes are the most important components of wearable and portable supercapacitors. Ti3C2Tx MXene and reduced graphene oxide (rGO) have a great potential for the fabrication of high-performance textile supercapacitor electrodes. In this work, rGO was synthesized with the presence of cellulose nanocrystal (CNC) and Ti3C2Tx/rGO/CNC dispersions with different rGO/CNC contents were prepared. The plain-woven cotton fabrics were coated by homogenous Ti3C2Tx and Ti3C2Tx/rGO/CNC dispersions (5% wt., 15% wt., 30% wt. and 50% wt. rGO/CNC content) and characterized by X-ray Diffraction, Fourier Transform Infrared spectroscopy and Scanning Electron Microscopy techniques. The electrochemical characterization techniques showed that Ti3C2Tx/rGO/CNC loaded fabric electrodes up to 15 wt.% rGO/CNC content exhibited a high specific capacitance of 501.1 F g−1 at a current density of 0.3 A g−1 with low internal electrode resistance, and a good electrochemical stability. The results also showed that MXene/rGO/CNC based high-performance textile supercapacitor electrodes can be prepared by simple drop-casting method.Graphical

Association Between Intracochlear Electrode Design and Electrically-Evoked Compound Action Potential Measures in Cochlear Implant Users.

Cochlear implant (CI) electrode design has changed over time. Changes in intracochlear electrode design might influence the spread of neural activation along the auditory nerve and the number of independent channels. This study aimed to investigate the impact of intracochlear electrode design on the electrode-neuron interface using electrophysiological measures. Prospective cohort study. A single tertiary hospital. Fifty-two ears who were implanted with CI divided into 3 groups based on the design of intracochlear electrode arrays. Twenty-three ears were implanted with lateral wall straight electrodes. Eighteen ears were implanted with the slim perimodiolar electrode, and 11 ears were implanted with the old perimodiolar electrode. Various electrically-evoked compound action potential (ECAP) metrics were measured to quantify spread of excitation and channel interaction. ECAP threshold and slope were not significantly different among groups. ECAP spread of excitation (SOE) half-width and channel interaction index (CII) were significantly larger in subjects implanted with the lateral wall straight electrodes, indicating a wider spread of excitation compared to those with perimodiolar electrodes. Electrode impedance was significantly lower in subjects implanted with perimodiolar electrodes than those with lateral wall electrodes. Perimodiolar electrode groups yielded significantly narrower SOE half-widths and smaller CII than the lateral wall straight electrode group. This may indicate that the electrode array that hugged the modiolus had less overlap in neural excitation between adjacent electrodes, resulting in reduced channel interaction and potentially better spectral resolution than the electrode array positioned more laterally.

High modulus carbon fiber based composite structural supercapacitors towards reducing internal resistance and improving multifunctional performance

Carbon fibers (CFs) based composite structural supercapacitors (CSSs) are promising multifunctional energy storage composites which can simultaneously realize load bearing and electricity storage. The device power is still low due to the high internal resistance of CSS. Herein, the CFs, electrolytes, monofunctional devices and multifunctional composite devices were investigated to show the attribution of the internal resistances. Both the normally used T300 CF and high modulus M55J CF fabrics were utilized. The electric in-plane and through-the-thickness resistances of CF fabric electrodes were characterized, respectively. The internal resistance of the monofunctional supercapacitor devices which were assembled using liquid electrolyte were evaluated considering the effects of CF sizing. The bicontinuous structural electrolytes (BSEs) composed of epoxy (EP) and ionic liquid (IL) were prepared as the multifunctional matrix of the CSSs. The chemical structure, thermal stability and ionic conductivity of the BSEs were assessed. The activated carbon (AC) loaded CFs and BSEs were used to fabricate the CSSs. Both the tensile and charge/discharge properties of the M55J CF CSSs were higher than those of the T300 CF CSSs. This work could provide new insights into the resistance attribution of CSS and how to simultaneously improve both mechanical and electrochemical performances of CSSs.

Research on Quantitative Diagnosis of Dendrites Based on Titration Gas Chromatography Technology

Lithium plating can cause capacity fade and thermal runaway safety issues in lithium-ion batteries. Therefore, accurately detecting the amount of lithium plating on the surface of the battery’s negative electrode is crucial for battery safety. This is especially crucial in high-energy-density applications such as battery energy storage systems or in electric vehicles (EVs). Early detection of lithium plating is crucial for evaluation of reliability and longevity. It also serves as a method for early diagnostics in practical industrial applications or infrastructure, such as EV transportation. This can enhance its impact on customers. This study validates the effectiveness of titration gas chromatography (TGC) technology in quantitatively detecting lithium plating on graphite negative electrodes in lithium-ion batteries. The results show that it can detect a minimum of 2.4 μmol of metallic lithium. Compared with the heating direct current resistance and reference electrode methods, which can be used to perform only qualitative dendrite detection, TGC has a wider range of detection. Compared with the nuclear magnetic resonance (NMR) method with higher quantitative detection accuracy, the maximum difference between the detection results of the two methods was only 7.2%, but the TGC method had lower cost and higher implementation convenience. In summary, among various dendrite detection methods, the TGC method can not only realize the effective quantitative detection of lithium plating, but also comprehensively consider its detection range, implementation convenience, cost, and detection accuracy, indicating that it is suitable for engineering applications and has the prospect of realizing large-scale quantitative detection of lithium plating in lithium-ion batteries.

Cochlear implantation for rare Streptococcus suis meningitis with hearing loss.

This study aimed to explore the diagnostic sensitivity of 3D heavily weighted T2-weighted MRI (T2MRI) and high-resolution computed tomography (HRCT) in patients with cochlear fibrosis associated with Streptococcus suis (S. suis) meningitis and the practicality of Cochlear implantation (CI) treatments. Between January 2020 and December 2022, we enrolled four patients with rare cochlear S. suis meningitis with associated hearing loss despite aggressive or non-aggressive follow-up antibiotic treatment. Clinical imaging data, surgical performances and post-surgical-electrode impedance were evaluated. Combined with HRCT and T2MRI, the cochlea had varying degrees of fibrosis and ossification in different cases. However, the electrodes were successfully and wholly inserted after intraoperative removal of the ossified and fibrotic foci. Post-surgical electrode impedance values of MP1 + 2 mode were normal in all 4 cases at initial activation. In patients with S. suis meningitis and associated cochlear fibrosis, T2MRI examination of the inner ear was more sensitive than HRCT. This research highlights the feasibility of CI treatment in S. suis meningitis patients with severe cochlear fibrosis.

Discharge mitigation methods in MPGD-based detectors

This work reviews various methods used to minimize the probability of discharge occurrence in MPGDs or to mitigate the effect of spark discharges on the detector system. These include techniques that can reduce the probability that the fundamental discharge limits of MPGD structures are reached during detector operation, methods based on the HV scheme optimization, or the implementation of resistive electrodes to enhance local discharge quenching capabilities in an amplification structure. In addition, design optimization and quality control methods to ensure stable, long-term operation of an MPGD-based detector, are considered.

Mitigation of Triclocarban Inhibition in Microbial Electrolysis Cell-Assisted Anaerobic Digestion.

Triclocarban (TCC), as a widely used antimicrobial agent, is accumulated in waste activated sludge at a high level and inhibits the subsequent anaerobic digestion of sludge. This study, for the first time, investigated the effectiveness of microbial electrolysis cell-assisted anaerobic digestion (MEC-AD) in mitigating the inhibition of TCC to methane production. Experimental results showed that 20 mg/L TCC inhibited sludge disintegration, hydrolysis, acidogenesis, and methanogenesis processes and finally reduced methane production from traditional sludge anaerobic digestion by 19.1%. Molecular docking revealed the potential inactivation of binding of TCC to key enzymes in these processes. However, MEC-AD with 0.6 and 0.8 V external voltages achieved much higher methane production and controlled the TCC inhibition to less than 5.8%. TCC in the MEC-AD systems was adsorbed by humic substances and degraded to dichlorocarbanilide, leading to a certain detoxification effect. Methanogenic activities were increased in MEC-AD systems, accompanied by complete VFA consumption. Moreover, the applied voltage promoted cell apoptosis and sludge disintegration to release biodegradable organics. Metagenomic analysis revealed that the applied voltage increased the resistance of electrode biofilms to TCC by enriching functional microorganisms (syntrophic VFA-oxidizing and electroactive bacteria and hydrogenotrophic methanogens), acidification and methanogenesis pathways, multidrug efflux pumps, and SOS response.

Optimizing Structural Patterns for 3D Electrodes in Lithium-Ion Batteries for Enhanced Fast-Charging Capability and Reduced Lithium Plating

The most common pattern types for anode structuring, in particular the line, grid, and hexagonal-arranged hole pattern were evaluated in a comparable setup in full-cells and symmetrical cells. The cells with structured electrodes were compared to reference cells with unstructured anodes of similar areal capacity (4.3 mAh cm−2) and the onset of lithium plating during fast-charging was determined in situ by differential voltage analysis of the voltage relaxation and ex situ by post-mortem analysis. Furthermore, electrochemical impedance spectroscopy measurements on symmetrical cells were used to determine the ionic resistance of structured and unstructured electrodes of similar areal capacity. All cells with structured electrodes showed lower ionic resistances and an onset of lithium plating shifted to higher C-rates compared to cells with unstructured electrodes. The structure patterns with capillary structures, i.e., lines and grids, showed significant reduced lithium plating during fast-charging and a higher rate capability compared to reference cells with unstructured electrodes and cells with hole structured electrodes. The continuous rewetting of the electrode with liquid electrolyte by capillary forces and the reduced ionic resistance of the 3D electrode are identified as key factors in improving overall battery performance. The data of the studied cells were used to calculate the resulting energy and power densities of prospective commercial pouch cells and potential pitfalls in the comparison to cells with unstructured electrodes were identified.

Gold nanosheet modified electrode with reduced impedance for electrophysiological recordings

In neurophysiological recording, reducing electrode impedance is crucial for enhancing the signal-to-noise ratio and achieving the desired spatial resolution. This study presents an approach to improve the performance of Au/Cr/glass electrodes by incorporating synthesized gold nanosheets without the need for additional adhesive material. We characterized the performance of the modified electrodes using electrochemical impedance spectroscopy and equivalent circuit analysis. Our findings showed an 81% reduction in mean impedance for the modified electrode, which was 0.85 kΩ at 1 kHz, compared to the unmodified electrode at 4.5 kΩ, an improvement attributed to the higher effective surface area of the modified electrode. Additionally, Scanning electron microscopy observations of PC12 cells cultured on the modified electrodes indicated favorable cell elongation and interaction with the rough surface. Stability studies indicated acceptable performance of the modified electrodes in solution environments. These results suggest that surface modification of electrodes with gold nanosheets could be a promising strategy for enhancing neural interface applications.

Temperature dependency of impedance, dielectric, and conductivity properties for Si-p/beta-FeSi2-n heterostructures created through facing target sputtering

To connect thermal dependency with Si-p/beta-FeSi2-n heterostructure efficiency, this work explored the impedance characteristics accompanied by dielectric and conductivity properties under different temperatures of 160–400 K. The Nyquist impedance plots for the heterostructures showed a semicircular arc that shrank as the temperature increased. These can be equivalently interpreted as a loop of single resistance paralleled to single constant phase element representing the heterostucture which also paralleled to inductive elements representing the inductive effect, serially connected to electrode resistance. The dielectric properties implied a shift in behavior for the relaxation process since donor-acceptor deionization occurred when the temperatures reached 320 K or higher due to shorter relaxation time and higher thermal dissipation. The conductivity properties indicate that the transport mechanism at 180 K or lower involves a prolonged transitional movement before transitioning into localized hopping at higher temperatures, corresponding to faster carrier movement. The relaxation and activation energy of the heterostructure reveal drastic transition of the energy from a low temperature of 160–240 K to a higher temperature of 320–400 K, where the electrical mechanism of the heterostructures become highly dependent on the temperature likely due to the high carrier density based on unevenly high activation energy.

Radial ablation uniformity of cathode and design of double anode micro-cathode arc thruster

Micro-cathode arc thruster offers promising applications in micro–nanosatellite space missions owing to its simple structure, high specific impulse, and low power consumption. However, the non-uniform ablation of the cathode poses a significant limitation on the total impulse of micro-cathode arc thruster. This non-uniformity can be categorized into circumferential and radial types, with previous research primarily focusing on the influence of circumferential ablation non-uniformity. Nevertheless, it has been observed that radial ablation non-uniformity also affects the stability of the thruster, despite the lack of studies in this area. To investigate the mechanism behind the cathode radial ablation, a slice model has been designed to study the motion process of the cathode spots during a single discharge using a high-speed camera. From this analysis aims to identify the root cause of uneven cathode radial ablation. Building upon these findings, a double anode micro-cathode arc thruster has been devised to enhance the uniformity of cathode ablation. Experimental verification has been conducted to assess the performance of the double anode micro-cathode arc thruster. The results indicate that in the traditional micro-cathode arc thruster discharge process, the cathode spots do not migrate towards the outer layer covered by the shell. Instead, they extend to the surface of the shell along the contact area between the shell and cathode. This leads to unequal ablation between the inner and outer layers of the cathode. The double anode micro-cathode arc thruster effectively addresses these issues by providing two discharge channels that maintain the dynamic balance of electrode resistance and increase the ablation amount on the outer layer of the cathode. Consequently, the total impulse of the thruster improved significantly while ensuring the desired performance index.