AgNW Networks Research Articles

Investigation of Silver Nanowire Transparent Heated Films Possessing the Application Scenarios for Electrothermal Ceramics

As transparent heated films (THFs) based on transparent conductive oxides (TCOs) are restricted by expensive raw materials and inappropriate fabricating film on curved surfaces because of its brittleness, silver nanowires transparent conductive film (AgWS-TCF) is an ideal alternative material for THF. However, there are still many problems to be solved in the electrical and thermal stability of AgNWs-TCF. In this paper, an Al-doped ZnO (AZO) nanoparticles produced by magnetron sputtering was used to modify and coat the AgNWs network, and the ceramic /AgNWs@AZO-TCF was obtained. Compared with ceramic/AgNWs-TCF, the sheet resistance of ceramic/AgNWs@AZO-TCF decreased from 53.2 to 19.3 Ω/sq, resistance non-uniformity decreased from 18.0% to 7.0%, and the inoxidizability, current-impact resistance, and failure voltage increased significantly. In addition, the electrothermal efficiency of ceramic/AgNWs@AZO-TCF is significantly improved after sputtering a SiO2 layer on the surface of ceramic substrate. Compared with ceramic/AgNWs@AZO-TCF, the temperature of ceramic-SiO2/AgNWs@AZO-TCF increases from 78.7 to 113.2 °C under applied voltage of 6 V, which possess the application scenarios for electrothermal-ceramics teacup (or tableware) to realize the function of heat preservation and disinfection.

Ultra-Highly Cross-Aligned AgNWs Network by a Facile Liquid-Bridge Assisted Couette-Flow Solution Process: Toward Mass-Producing High-Performance Flexible Transparent Electrodes

Open AccessCCS ChemistryRESEARCH ARTICLES18 Jan 2023Ultra-Highly Cross-Aligned AgNWs Network by a Facile Liquid-Bridge Assisted Couette-Flow Solution Process: toward Mass-Producing High-Performance Flexible Transparent Electrodes Xiaoxun Li, Lili Meng, Min Zhang, Kejie Zhang, Lei Jiang and Huan Liu Xiaoxun Li Google Scholar More articles by this author , Lili Meng Google Scholar More articles by this author , Min Zhang Google Scholar More articles by this author , Kejie Zhang Google Scholar More articles by this author , Lei Jiang Google Scholar More articles by this author and Huan Liu Google Scholar More articles by this author https://doi.org/10.31635/ccschem.023.202302694 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Cross-aligned silver nanowires (CA-AgNWs), a unique network widely used in flexible transparent electrodes (FTEs), have been well developed using various solution processes. However, these approaches suffered from limitations of both the large alignment deviation and the solution waste, especially in large-area fabrication, which deteriorates the performance of FTEs. Here, we developed a facile liquid-bridge assisted Couette-flow solution shearing approach, which enables aligning AgNWs into a highly ordered horizontal array in a large area (120 cm2). Particularly, the alignment deviation, evaluated by the statistic full width at half-maximum (FWHM), is rather small with a value of ca. 12.6, by several times lower than those made by other solution processes. The fibrous liquid-bridge is responsible for transferring liquid steadily onto the substrate, during which process AgNWs are aligned roughly by the solution shearing. Worthnoting is the following further aligning process under the enhanced shearing force by the Couette-flow. Consequently, the ultra-highly CA-AgNWs network was prepared, leading to a high-performance FTE with high conductivity (7 Ω sq-1), high transparency (93 %), long lifetime (over 180 days), good adhesion-stability (200 times tape test) and good flexibility. Moreover, the strategy is applicable for the mass-production, benefiting for the practical application of high-performance optoelectronic devices. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentVolume 0Issue jaPage: 1-32Supporting Information Copyright & Permissions© 2023 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...

Halide-Salt-Free Synthesis of Silver Nanowires with High Yield and Purity for Transparent Conductive Films.

To date, silver nanowires (AgNWs) are routinely synthesized. However, the controllable preparation of AgNWs without any halide salts has not reached a similar level. In particular, the halide-salt-free polyol synthesis of AgNWs commonly occurs above 413 K, and the property of AgNWs obtained is not so easy to control. In this study, a facile synthesis of AgNWs with a yield of up to ∼90% in an average length of 75 μm was successfully performed without any halide salts. The fabricated AgNW transparent conductive films (TCFs) show a transmittance of 81.7% (92.3% for the AgNW network only without substrate) at a sheet resistance of 12.25 Ω/square. In addition, the AgNW films show distinguished mechanical properties. More importantly, the reaction mechanism for AgNWs was briefly discussed, and the importance of reaction temperature, the mass ratio of poly(vinylpyrrolidone) (PVP)/AgNO3, and the atmosphere was emphasized. This knowledge will help enhance the reproducibility and scalability of polyol synthesis of high-quality AgNWs.

Memristive and Tunneling Effects in 3D Interconnected Silver Nanowires.

A network of silver nanowires (Ag-NWs) is grown by electrodeposition in a nanoporous membrane with interconnected nanopores. This bottom-up approach fabrication method gives a conducting network with a 3D architecture and a high density of Ag-NWs. The network is then functionalized during the etching process, which leads to a high initial resistance as well as memristive behavior. The latter is expected to arise from the creation and the destruction of conducting silver filaments in the functionalized Ag-NW network. Moreover, after several cycles of measurement, the resistance of the network switches from a high-resistance regime in the GΩ range with tunnel conduction to a low-resistance regime presenting negative differential resistance in the kΩ range.

Broadband transparent and flexible silver mesh for efficient electromagnetic interference shielding and high-quality free-space optical communication

A broadband transparent and flexible silver (Ag) mesh is presented experimentally for the first time for both efficient electromagnetic interference (EMI) shielding in the X band and high-quality free-space optical (FSO) communication. High transmission is achieved in a broad wavelength range of 0.4-2.0 µm. The transmittance of the Ag mesh relative to the substrate is around 92% and the sheet resistance is as low as 7.12 Ω/sq. The Ag mesh/polyethylene (PE) achieves a high average EMI shielding effectiveness (SE) of 28.8 dB in the X band with an overall transmittance of 80.9% at 550 nm. High-quality FSO communication with small power penalty is attributed to the high optical transmittance and the low haze at 1550 nm, superior to those of the Ag NW networks. With a polydimethylsiloxane (PDMS) coating, the average EMI SE is still up to 26.2 dB and the overall transmittance is increased to 84.5% at 550 nm due to antireflection. The FSO communication does not change much due to the nearly unchanged optical property at 1550 nm. Both the EMI shielding performance and the FSO communication function maintain after 2-hour chemical corrosions as well as after 1000 bending cycles and twisting. Our PDMS/Ag mesh/PE sandwiched film can be self-cleaned, suitable for outdoor applications.

A novel gradient structured nanofiber and silver nanowire composite membrane for multifunctional air Filters, oil water Separation, and health monitoring flexible wearable devices.

Particular matter (PM), oily wastewater, and microorganisms (e.g., bacteria) have caused serious environmental, health, and safety issues. However, the development of multifunctional filtration materials to address these problems remains a great challenge. Here, we present a series of gradient structured air filters by simply spray coating poly(vinyl alcohol-co-ethylene) (PVA-co-PE) nanofibers on nylon mesh, followed by silver nanowires (AgNWs). Interestingly, it is found that the ANF-6 air filter is an anisotropic Janus membrane with asymmetric wettability and translucency. The as-prepared ANF-6 air filter exhibits excellent water vapor transmission rate (4447.92 ± 184.78g/(m2. d)), PM filtration (96.42 ± 0.64% for PM0.3), photothermal (79.6°C under 1sun in 150s), thermal insulation, antibacterial, and oil water separation. Additionally, the obtained ANF-6 air filter was impregnated with carbon black (CB) dispersion and served as flexible pressure sensors to monitor human respiration rate (17 times/min) and wrist pulse rate (80 times/min). The gradient structured PVA-co-PE nanofibers and AgNWs network provides excellent air filtration, oil water separation, and sensitivity performance for the sensors. These results provide a new scheme for designing multifunctional filtration materials and wearable pressure sensors in the application of air filtration, oil water separation, and wearable electronics for monitoring human health.

Highly flexible organo-metal halide perovskite solar cells based on silver nanowire-polymer hybrid electrodes.

Flexible perovskite solar cells (FPSCs) have attracted considerable attention due to their broad application possibilities in next generation electronics. However, the commonly used transparent conductive electrodes (TCEs), such as indium tin oxide (ITO), suffer from poor flexible performance, impeding the development of FPSCs. Here, we propose a hybrid electrode (PUA/AgNWs/PH1000) comprising a thin percolation network of silver nanowires (AgNWs) inlaid on the surface of a flexible substrate (PUA) modified with a conductive layer (PH1000), which exhibits high optical transmittance and electrical conductivity, as well as robust mechanical flexibility. By applying the proposed PUA/AgNWs/PH1000 hybrid electrode in FPSCs, the resulting ITO-free devices exhibit the desired flexibility and mechanical stability; it can survive repeated continuous bending cycles and retain 77.4% of its initial power conversion efficiency after 10 000 bending cycles with the bending radius of 5 mm.

A simple and efficient transfer method for fabricating stretchable AgNW patterns on PDMS using carboxylated cellulose nanofibers as a sacrificial layer.

Silver nanowire (AgNW) networks are one of the most promising materials of transparent electrodes in flexible applications. However, they still face challenges in fabricating AgNW transparent conductive films (TCFs) with excellent comprehensive performance on stretchable substrates. In this work, we developed an efficient and simple water-assisted method to completely transfer AgNW films from glass to polydimethylsiloxane (PDMS). Carboxylated cellulose nanofibers (CNF-C) are introduced between the AgNW network and glass as a sacrificial layer, which is dissolved in water in the transfer process, releasing the AgNW network on the PDMS. The transferred AgNW networks show an increase of sheet resistance less than 30% and a slight decrease of transmittance. The stretchable AgNW TCFs exhibited good opto-electrical performance with a figure of merit of about 200, low surface roughness, good film uniformity, long-term stability, electrical stability and mechanical performance. Two patterning approaches based on the transfer method were proposed and fine stretchable AgNW patterns with a linewidth of 200 μm were fabricated. The fabricated stretchable AgNW patterns were used in flexible wires, a film heater and sensors as a demonstration.

Aluminum‐Doped ZnO Weld Silver Nanowires‐Based High Transmittance, Low Sheet Resistance, and Tough Composite Transparent Conductive Films

Herein, silver nanowires (AgNWs) and aluminum‐doped zinc oxide (AZO) are prepared by polyol and gel–sol method, respectively. Then bendable, strong adhesion, flat, and high optical transmittance AgNWs:AZO composite transparent conductive film (TCF) is prepared in an all‐solution method. By spinning the AZO to the upper layer of the AgNW networks and annealing at 120 °C for 20 min, the junctions of the AgNW networks are welded by the capillary force in the solvent evaporation and AZO crystallization process. The sheet resistance of the TCF is as low as 12.9 Ω sq−1 at an optical transmittance of 92.1% (@550 nm), which is comparable to the indium tin oxide film on glass. The root means square roughness is reduced from 30.1 to 8.48 nm to match the criteria as anode for organic light emitting diodes (OLEDs). Furthermore, the adhesion between the AgNW networks and the substrate has been significantly improved. Finally, a flexible green OLED device with AgNW:AZO TCF as the anode is successfully prepared. The maximum luminous intensity of the prepared OLED is 10 060 cd m−2, and the maximum current efficiency is 6.43 cd A−1, which proves the great potential of the film in flexible electronics.

Fully Solution-Based AgNW/AlOx Nanocomposites for Stable Transparent Heaters

Transparent heaters (TH) have a lot of potential in flexible and wearable applications. Consequently, interest in using nanomaterials, such as metallic networks, grids, and meshes, has expanded as an alternative to conventional transparent conductive oxides like indium tin oxide. In particular, silver nanowire (AgNW) networks are very promising transparent and flexible electrodes thanks to their optimum physical properties and the possibility to obtain them by low-cost fabrication techniques. However, AgNW networks suffer from instabilities that affect their electrical performance at high operating voltages or over time and thus require a protective layer, often deposited by vacuum-based techniques. In this work, we implemented a low-cost solution-based aluminum oxide (AlOx) coating produced by combustion synthesis to encapsulate spray-coated AgNW networks. The TH with an AlOx coating obtained from a 0.4 M precursor solution concentration presents the best compromise between optical transmittance and electrical resistance. Besides this, such a coating provides a robust protection against corrosion under accelerated environmental stress (relative humidity = 80%; temperature = 70 °C) up to 7 days. As a proof-of-concept, a 50 × 50 mm2 TH was fabricated and tested as a defroster (down to −21 °C) showing a highly reproducible heating performance (up to 90 °C at 6 V) and stability for 12 h. In addition, different morphologies of the AlOx thin film, namely smooth or porous, can be obtained when either conventional thermal annealing or Joule heating of AgNWs is used, respectively, to carry out the combustion reaction. This offers a promising tunability for different final applications.

Dielectric Study of Cost‐Effective, Eco‐Friendly PVA‐Glycerol Matrices with AgNW Electrodes for Transparent Flexible Humidity Sensors

AbstractIn this work, a deep insight is given into the dielectric properties and the humidity response of flexible polymer matrices, composed of polyvinyl alcohol (PVA) and glycerol (Gly), using silver nanowire networks as transparent electrodes (AgNW TE). These electrodes, known for their high electrical conductivity, optical transparency, and excellent flexibility, are deposited here by open‐air, scalable spray coating technique. Analysis of the dielectric constant ε′ and loss tangent tanδ according to the density of the AgNWs shows that the latter do not cover the entire surface with PVA and induces an interfacial polarization effect. Wide frequency range of impedance spectroscopy (1 Hz to 1 MHz) on both, PVA‐Gly samples with AgNW TE (4 Ω sq−1) networks electrodes and sputtered silver electrodes (Ag bulk el), reveal no significant change in ε′ and tanδ. Finally, the humidity sensing properties of PVA‐Gly exhibit good response between 20% to 90% humidity range and low hysteresis. This is related to the non‐continuous structure of AgNW TE. At 100 Hz, the PVA‐10 wt% Gly presents high sensitivity of 0.08 nF/% RH with an hysteresis value of about 1.5% at 70% RH. These results indicate that AgNW networks show great potential for integration in transparent and flexible humidity sensors.

Improvement of Electrical Properties of Silver Nanowires Transparent Conductive by Metal Oxide Nanoparticles Modification

At present, silver nanowire transparent conductive films (AgNWs-TCFs) still have problems such as high resistance of AgNWs network nodes, uneven distribution of resistance and poor electrical performance stability, which restrict their commercial application. Different from chemical modification, in this paper, a method of modifying AgNWs-TCFs with metal oxide nanoparticles (MONPs) is proposed, that is, ZnO, SnO2, Al2O3 and TiO2 etc., four transparent metal oxides are used as targets respectively in a magnetron sputtering process, modifying the silver nanowire network wire–wire junctions and silver nanowire in AgNWs-TCFs using active MONPs generated by magnetron sputtering. A series of AgNWs@MONPs for the AgNWs@ZnO-TCFs, AgNWs@SnO2-TCFs, AgNWs@Al2O3-TCFs and AgNWs@TiO2-TCFs were obtained. A significant decrease in the resistance of AgNWs-TCFs through the modification of MONPs was shown. Respectively, the reduction of resistance was 75.6%, 70.4%, 53.2% and 59.8% for AgNWs@ZnO-TCFs, AgNWs@SnO2-TCFs, AgNWs@Al2O3-TCFs and AgNWs@TiO2-TCFs. Correspondingly, its non-uniformity of resistance distribution was 12.5% (18.2% before), 10.0% (17.1% before), 10.1% (24.3% before) and 10.6% (13.4% before), respectively, which markedly improved the uniformity of electrical property. Respectively, their failure voltages reach 16, 16, 15 and 16 (V), so accordingly, the electrical stability is considerably enhanced. In addition, the uniformity of temperature distribution was also significantly optimized with its temperature non-uniformity of 10.4%, 8.7%, 10.3% and 9.6%, respectively. Contrast that with AgNWs@MONPs, and the failure voltages and temperature non-uniformity of AgNWs-TCFs are 12 V and 40.6%.

Room-temperature nanojoining of silver nanowires by graphene oxide for highly conductive flexible transparent electrodes

Flexible transparent electrodes for touch panels, solar cells, and wearable electronics are in great demand in recent years, and the silver nanowire (AgNW) flexible transparent electrode (FTE) is among the top candidates due to its excellent light transmittance and flexibility and the highest conductivity of silver among all metals. However, the conductivity of an AgNWs network has long been limited by the large contact resistance. Here we show a room-temperature solution process to tackle the challenge by nanojoining AgNWs with two-dimensional graphene oxide (GO). The conductivity of the AgNWs network is improved 18 times due to the enhanced junctions between AgNWs by the coated GOs, and the AgNW-GO FTE exhibits a low sheet resistance of 23 Ohm sq−1 and 88% light transmittance. It is stable under high temperature and current and their flexibility is intact after 1000 cycles of bending. Measurements of a bifunctional electrochromic device shows the high performance of the AgNW-GO FTE as a FTE.

26.3: Synchronously micro‐patterning and nano‐welding silver nanowires for high‐performance transparent electrodes

Transparent electrodes (TEs) are the core and key of flexible electronic devices. Silver nanowires (AgNW) networks are the predominant flexible TEs due to their low cost, high performance, and flexibility. However, additional treatments are generally required to lower the high contact resistance between AgNWs and to achieve patterning of AgNW network for practical applications. Here, we use diphenyliodonium nitrate (DPIN) as an AgNW modifier to allow plasmonic welding and patterning transfer of the nanowire network with assistance of hydroxypropyl methylcellulose (HPMC). AgNW patterns with high resolution down to 3 μm are then obtained via Plateau-Rayleigh instability and ultrasonication in water without involving photoresist and etching.

4.2: Synchronously micro‐patterning and nano‐welding silver nanowires for high‐performance transparent electrodes

4.2: Synchronously micro‐patterning and nano‐welding silver nanowires for high‐performance transparent electrodes

Ultrathin, flexible, conductive silver nanowires@polyvinyl alcohol composite film fabricated via the combination of air plasma treatment and thermal sintering for electromagnetic interference shielding

• AgNWs@PVA composite films were fabricated via a unique combination method. • The AgNWs@PVA film shows high EMI SE of 55 dB at 11 μm ultra-low thickness. • The AgNWs@PVA film retains excellent stability after 2000 bending cycles. It remains still a challenge to prepare thin, flexible, conductive films for electromagnetic interference shielding, which are highly desired in next-generation electronic applications such as aerospace, medical and wearable devices, etc . Herein, silver nanowires@polyvinyl alcohol (AgNWs@PVA) composite films were fabricated via a unique combination of air plasma treatment followed by thermal sintering of AgNWs network. The prepared composite ultra-thin film (11 µm) with 24.2 wt% of AgNWs displays relatively low density of 1.58 g cm −3 . Remarkably, the sheet resistance and electromagnetic interference shielding effectiveness are separately achieved to 0.29 Ω/sq and 55 dB at the measured frequency range of 8.2 GHz to 12.5 GHz. These traits underscore a significant promising prospect of AgNWs@PVA film in the modern flexible electronic devices.

Cobweb-Inspired Quintuple Network Structures toward High-Performance Wearable Electrochromic Devices with Excellent Bending Resistance.

Flexible electrochromic devices (FECDs) have been regarded as an ideal stratagem for wearable displays. However, it remains a great challenge to achieve long-term stability for high-performance FECDs due to their severe electrolyte deformation/leakage under repeated bending. Herein, inspired by the rough and fluffy microstructure of cobwebs, we prepared a porous polylactic acid (PLA) network through electrospinning and nonsolvent-induced phase separation. This loosely interlaced PLA network can be well infiltrated by electrolytes and exhibits extraordinarily high transparency; in addition, its surface contains numerous tiny holes to effectively load electrolytes to mitigate deformation. Furthermore, we also introduced silver nanowires (AgNWs) as the supporting network to load and connect electrochromic materials. After assembling them with graphene (GR) electrodes, a wearable FECD with a quintuple network structure (two GR networks, two AgNW networks, and one PLA network) was successfully prepared. The resulting FECD can realize high optical modulation (more than 70%), excellent cyclic stability (retain 95% after 1000 cycles), and innovative bending resistance (retain 84.8% after 6000 bending cycles). This work not only solves the long-lasting challenge of developing FECD with high optical modulation and bending resistances but also provides an energetic paradigm for diverse soft electronics used in harsh environments.

Novel metallic stainless-steel mesh-supported conductive membrane and its performance in the electro-filtration process

In this study, we demonstrate the fabrication of a thoroughly metallic electro-conductive membrane by using simple filtration to uniformly coat AgNWs dispersion through stainless steel (SUS)-mesh, which functions both as filter and a flexible conductive substrate. The as-prepared AgNWs networks layer on the SUS-mesh was further strengthened by electroplating Ag layers (P-SUS membrane); exhibiting an overall electrical conductivity of 9.2 × 104 S/m, which is up to 42 times greater than the conductivity of pristine SUS-mesh. The P-SUS membrane exhibited adequate physical durability against chemical and mechanical stresses under prolonged filtration, and high pure water flux of 534 ± 54 LMH/bar. This electro-membrane displayed the anticipated flux recovery in harvesting microalgae (Chlorella sp. HS-2) when filtration was done with the membrane used as a cathode: micro-sized bubbles, generated from the cathodic membrane, functioned to detach the foulants and recover the relative flux to a significant level. The P-SUS membrane indeed possesses necessary traits that the polymer-support membrane lacks, in terms of not only electrical conductivity and mechanical strength but also filtration performance with anti-fouling capability, all of which are of necessity to be considered workable electroconductive membrane.

Cost-Effective Fabrication of Uniformly Aligned Silver Nanowire Microgrid-Based Transparent Electrodes with Higher than 99% Transmittance.

Silver nanowire (Ag NW)-based transparent electrodes (TEs) are promising alternatives to indium tin oxide (ITO) for next-generation flexible optoelectronic devices. Although many different constructs of Ag NW networks and post-treatment methods have been developed for TE applications, trade-offs between optical and electrical performance still remain. Herein, aided by electrohydrodynamic (EHD) printing, we present a cost-effective strategy to fabricate aligned Ag NW microgrids in a large area with excellent uniformity, resulting in superior optoelectronic properties. Guided by the percolation theory and simulation, we demonstrated that by confining aligned Ag NWs into a microgrid arrangement, the percolation threshold can be reduced significantly and adequate electrical conducting pathways can be achieved with an optimized combination of sheet resistance and optical transparency, which surpass conventional random Ag NW networks and random aligned Ag NW networks. The resulting TEs exhibit an ultrahigh transmittance of 99.1% at a sheet resistance of 91 Ω sq-1 with extremely low nanowire usage, an areal mass density of only 8.3 mg m-2, and uniform spatial distribution. Based on this TE design, we demonstrated transparent heaters exhibiting rapid thermal response and superior uniformity in heat generation. Using UV-curable epoxy, highly flexible Ag NW-embedded TEs were fabricated with superior mechanical stabilities and low surface roughness of 2.6 nm. Bendable organic light-emitting diodes (OLEDs) are directly fabricated on these flexible Ag NW electrodes, with higher current efficiency (27.7 cd A-1) than ITO devices (24.8 cd A-1).

Highly Conductive, Flexible, and Robust Silver Nanowire-Embedded Carboxymethyl Cellulose/Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) Composite Films for Wearable Heaters and On-Skin Sensors

Highly conductive, flexible, and durable silver nanowire (AgNW)-embedded carboxymethyl cellulose (CMC)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (s-CMC/PEDOT:PSS) composite films were investigated for application in wearable heaters and on-skin sensors. The electrical conductivities of the CMC/PEDOT:PSS composites were optimized by controlling the PEDOT:PSS weight ratio in CMC, and the sheet resistance decreased significantly from 6828 (CMC:PEDOT:PSS = 1:5) to 83 Ω/sq (CMC:PEDOT:PSS = 1:17). Furthermore, AgNW networks were embedded onto the surface of the CMC/PEDOT:PSS films to further enhance their conductivity. The introduction of AgNW networks resulted in a significant decrease in the sheet resistance of the composites from 81 to 7 Ω/sq. In addition, the s-CMC/PEDOT:PSS composite film exhibited high mechanical stability in repeated bending tests. The uniformly distributed AgNWs inside the composites enhanced the electrical contact between the conducting PEDOT:PSS domains in the CMC matrix. Based on the highly conductive, flexible, and robust s-CMC/PEDOT:PSS composite films, high-performance wearable heating devices and on-skin sensors were fabricated. The wearable heater achieves a high temperature of 159.5 ℃ with uniform temperature distribution. Furthermore, on-skin sensors with s-CMC/PEDOT:PSS composites were conformably integrated on human skin which successfully detected various human motions, including finger bending, wrist bending, skin touch, ankle motions, and walking in real-time. The sensors exhibit high sensing performance with high sensitivity, conformability, superior mechanical robustness, and low power consumption. The high-performance s-CMC/PEDOT:PSS composite film could be a promising flexible and conductive composite material with new opportunities in next-generation electronics.Graphical Abstract