CarbonPub Date : 2025-09-24DOI: 10.1016/j.carbon.2025.120868
Bo Dai , Qian Jia , Bingbing Lai , Xiaoyu Wang , Lizan Wang , Haichao Liu , Wenjing Lou , Xiaobo Wang
{"title":"Amino-ionic liquid functionalized graphene: A dual-purpose additive for lubrication and electrical erosion resistance","authors":"Bo Dai , Qian Jia , Bingbing Lai , Xiaoyu Wang , Lizan Wang , Haichao Liu , Wenjing Lou , Xiaobo Wang","doi":"10.1016/j.carbon.2025.120868","DOIUrl":"10.1016/j.carbon.2025.120868","url":null,"abstract":"<div><div>To address electrical erosion in rolling bearings of the motor systems of electrical vehicles, this study presents an in situ functionalization of graphene oxide (GO) with an amino-functionalized ionic liquid, [Bmim]PF<sub>6</sub>, resulting in a reduced graphene oxide–ionic liquid composite (rGOIL) with excellent electrical conductivity and outstanding friction-reducing and anti-wear performances. A series of conductive urea-based greases are formulated by optimizing the rGOIL content. The structure and morphology of rGOIL are characterized by FTIR, XRD, Raman spectroscopy, SEM, TEM, and XPS. Tribological tests using an SRV tribometer and electrical erosion evaluation on a bearing test rig show that grease containing 0.5 wt% rGOIL maintains a low and stable friction coefficient (0.102) under a 200 N load at 50 °C, with a 93 % reduction in wear volume compared to conventional polyurea grease. In electrical erosion tests, the bearing vibration amplitude stabilizes at 1.1 mm/s<sup>2</sup>, only 15 % of that measured for the reference grease. XPS and TEM analyses reveal the formation of a tribochemical film consisting of graphene nanosheets, ionically bonded liquid layers, and metal fluorides and phosphates. This film forms a conductive lubrication layer through a synergistic \"lubrication–conductivity–lubrication\" mechanism, effectively mitigating electrical erosion and enhancing bearing durability.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120868"},"PeriodicalIF":11.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-24DOI: 10.1016/j.carbon.2025.120873
Yuqin Zeng, Haibo Feng, Ling Ling, Li Li
{"title":"Design and fabrication of multiscale hierarchical structures of carbon-fiber-reinforced composites with ultrahigh specific damping performance","authors":"Yuqin Zeng, Haibo Feng, Ling Ling, Li Li","doi":"10.1016/j.carbon.2025.120873","DOIUrl":"10.1016/j.carbon.2025.120873","url":null,"abstract":"<div><div>Hierarchical architectures offer a new framework for enhancing specific damping in composites. However, effectively integrating multiscale damping sources with dynamic excitation remains challenging. Cross-scale damping mechanisms are difficult to control. To address this, this study proposes a multiscale damping design principle centered on the balanced-relative strain factor and normalized strain index. A multiscale design strategy for carbon-fiber-reinforced polymers is developed, successfully achieving ultra-high specific damping performance. The resulting composite exhibits an outstanding loss modulus of 13.2 GPa, exceeding conventional engineering materials. Its tensile yield strength reaches 441.8 MPa, demonstrating suitability for high-strength applications. Simulations are also employed to analyze the damping enhancement mechanism. This work provides a novel strategy for the design and manufacturing of lightweight, high-performance, and multifunctional structural damping composites.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120873"},"PeriodicalIF":11.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ultrafast & low-power consumption 2D floating-gate devices for opto-electronic hybrid neural networks","authors":"Yuting He , Feng Xiong , Jinbao Jiang , Biyuan Zheng , Wei Xu , Mengjian Zhu , Zhihong Zhu","doi":"10.1016/j.carbon.2025.120875","DOIUrl":"10.1016/j.carbon.2025.120875","url":null,"abstract":"<div><div>Optoelectronic hybrid neural networks combine the advantages of electronical and optical neural networks, enabling next-generation neuromorphic computing systems with nanosecond processing speeds, fJ-level energy efficiency, and wafer-scale integration density. Here, we demonstrate a MoS<sub>2</sub>/h-BN/graphene based 2D-material floating gate (FG) transistor exhibiting excellent electrical memory characteristics and dual mode photo-response: both positive (PPC) and negative photoconductance (NPC). Utilizing this device, we experimentally demonstrate a three-layer artificial neural network achieving high image recognition accuracy (97.2 %) with ultrafast operation (30 ns) and ultralow energy consumption (3.2 fJ/event). These results indicate that optoelectronic hybrid neural networks implemented with all-2D FG transistors can achieve energy-efficient and high-speed in-memory sensing and computing, showing promising potential in next-generation neuromorphic computing.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120875"},"PeriodicalIF":11.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-23DOI: 10.1016/j.carbon.2025.120861
Xiaohui Sun , Xuelei Gong , Shuhao Fan , Yongxu Liu , Huiyu Yu , Fanteng Meng , Debin Kong , Junwei Han , Linjie Zhi
{"title":"Covalently intercalated MXene/graphene composite film enables ultrasensitive acoustic sensors under extreme conditions","authors":"Xiaohui Sun , Xuelei Gong , Shuhao Fan , Yongxu Liu , Huiyu Yu , Fanteng Meng , Debin Kong , Junwei Han , Linjie Zhi","doi":"10.1016/j.carbon.2025.120861","DOIUrl":"10.1016/j.carbon.2025.120861","url":null,"abstract":"<div><div>Developing sensors with high sensitivity, capable of running in extreme environments, is highly desirable for specific intelligent technology development. Large MXene layers with high electrical conductivity have been widely used to assemble high-performance sensing films. However, the gaps between the large overlapping MXene layers would degrade mechanical performance and accelerate layer oxidation with air/water. Here, we propose a covalently intercalated MXene-based composite sensing film affording high tensile strength and suppressed air/water penetration, which is achieved by a small graphene layer covalently interconnected with large MXene layers, followed by cross-linking using 3-glycidoxypropyltrimethoxysilane (PGPTMS). As a result, the sensor using this strong and anti-oxidation sensing material could identify featured weak sound signals (<0.27 Pa) with a high sensitivity of 1728 kPa<sup>−1</sup> even under extreme conditions (200<sup>o</sup>C and 100 % relative humidity). This work provides a robust interfacial engineering approach for building sensors combined with high sensitivity and environmental adaptability.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120861"},"PeriodicalIF":11.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-22DOI: 10.1016/j.carbon.2025.120864
Haotian Jiang , Yanxiang Wang , Chengjuan Wang , Yingfan Li , Shichao Dai , Bohan Ding , Jinghe Guo , Yanru Yuan , Dongming Liu , Hui Li
{"title":"N-doped FeCoNi/MoS2@cnts/cnfs aerogels with magnetic-dielectric synergy for heat insulation, infrared stealth, and electromagnetic wave absorption","authors":"Haotian Jiang , Yanxiang Wang , Chengjuan Wang , Yingfan Li , Shichao Dai , Bohan Ding , Jinghe Guo , Yanru Yuan , Dongming Liu , Hui Li","doi":"10.1016/j.carbon.2025.120864","DOIUrl":"10.1016/j.carbon.2025.120864","url":null,"abstract":"<div><div>To develop multi-functional microwave-absorbing materials, the FeCoNi/MoS<sub>2</sub>@carbon nanotubes (CNTs)/carbon nanofibers (CNFs) aerogels were synthesized by anchoring FeCoNi and MoS<sub>2</sub> onto an aerogel skeleton via directional freeze-drying and catalytic chemical vapor deposition (CCVD). Through CCVD, a diverse array of heterointerfaces was successfully constructed and defect-containing CNTs were introduced, thereby improving the impedance mismatch of carbon-based aerogels while achieving outstanding microwave absorption performance. The composite aerogel results in a minimum reflection loss of −84.18 dB at the thickness of 1.85 mm and an effective absorption bandwidth of 5.40 GHz at the thickness of 1.75 mm with a 13 % filler ratio. The excellent electromagnetic wave absorbing ability is mainly ascribed to the formation of three-dimensional conduction network, abundant heterogeneous interfaces, and the introduction of magnetic loss. Density functional theory calculations further elucidate that the enhanced dielectric properties arise from asymmetric charge distribution at heterogeneous interfaces (FeCoNi–C and MoS<sub>2</sub>–C), which amplifies interfacial polarization, while the increased density of states optimizes conduction loss. Additionally, the composite aerogels exhibit exceptional thermal insulation and infrared stealth performance. This work pioneers a novel pathway method for multifunctional aerogels using CCVD.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120864"},"PeriodicalIF":11.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-22DOI: 10.1016/j.carbon.2025.120862
Chou Wu , Shaobo Jia , Haiyan Zhu , Jianxiao Shang , Tingting Li , Shanlin Chen , Zhequn Ren , Ghulam Meeladi , Bingbing Suo , Wenli Zou , Yawei Li
{"title":"d-s/p orbital hybridization-driven synergy in heteronuclear dual-atom catalysts on CN/C2N for high-efficiency lithium-sulfur batteries","authors":"Chou Wu , Shaobo Jia , Haiyan Zhu , Jianxiao Shang , Tingting Li , Shanlin Chen , Zhequn Ren , Ghulam Meeladi , Bingbing Suo , Wenli Zou , Yawei Li","doi":"10.1016/j.carbon.2025.120862","DOIUrl":"10.1016/j.carbon.2025.120862","url":null,"abstract":"<div><div>Graphene-like CN and C<sub>2</sub>N, characterized by their high pyridinic nitrogen content and two-dimensional porous structure, serve as ideal substrates for dual-atom catalysts (DACs). In this study, homonuclear and heteronuclear DACs (M<sub>1</sub>M<sub>2</sub>@CN/C<sub>2</sub>N, M = Mg/Co/Sn) were constructed by synergistically combining main-group metals (Mg/Sn) with the transition metal Co. The potential of these materials as sulfur hosts was systematically evaluated using density functional theory (DFT) calculations. The results indicate that the coupling of different molecular orbitals between metal atoms in heteronuclear DACs can modulate spin states, resulting in superior anchoring and catalytic performance for polysulfides compared with homonuclear systems. Specifically, the Co sites in MgCo@CN/C<sub>2</sub>N and CoSn@CN/C<sub>2</sub>N exhibited significantly enhanced sulfur reduction reaction (SRR) activity due to the d-s and d-p orbital hybridization effects of the adjacent Mg/Sn atoms. Notably, the Gibbs free energy for the SRR in CoSn@CN is as low as 0.31 eV, while MgCo@C<sub>2</sub>N requires only 0.21 eV, with Li<sub>2</sub>S dissociation barriers of 0.39 eV and 1.10 eV for the two structures, respectively. This theoretical research provides further insights into the design of high-performance lithium battery catalysts and carbon-based DACs composites.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120862"},"PeriodicalIF":11.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-22DOI: 10.1016/j.carbon.2025.120865
Chen Hu , Songang Peng , Xu Han , Yanqing Qiu , Yanming Liu , He Tian
{"title":"The gate length size impact on the performance of carbon-nanotube-based 1T1R configuration for neuromorphic computing","authors":"Chen Hu , Songang Peng , Xu Han , Yanqing Qiu , Yanming Liu , He Tian","doi":"10.1016/j.carbon.2025.120865","DOIUrl":"10.1016/j.carbon.2025.120865","url":null,"abstract":"<div><div>Benefiting from its excellent scalability, the carbon nanotube (CNT) has emerged as a promising material for advanced transistors to drive the resistive random-access memory (RRAM) in a one-transistor-one-resistor (1T1R) configuration. However, very few reports have investigated how the size of the CNT field-effect transistor (CNTFET) affects the performance of 1T1R. In this work, the gate length (L<sub>G</sub>) size impact on the electrical behavior of 1T1R has been investigated. It is found that the current of CNTFET modulated by different L<sub>G</sub> can significantly affect the switching behavior of the integrated RRAM. The 1T1R device with smaller L<sub>G</sub> exhibited superior switching reliability but inferior ratio performance. This trend may be attributed to the reduced conductive filaments (CF) in the RRAM cell originating from the low SET current induced by the smaller-channel CNTFET. As the L<sub>G</sub> decreased, the relative contribution of parasitic resistance to total device resistance increased. Hence, the gate control of CNTFET is weakened, leading to a degradation of the driving current. The amount of oxygen vacancies (V<sub>OS</sub>) caused by the electric field in the integrated RRAM is thus reduced. Therefore, the CF constriction becomes narrower, resulting in less distinguishable conductance states associated with a smaller switching window. The small amount of migrated V<sub>OS</sub> results in fewer damage sites and improved switching reliability. Furthermore, the long-term plasticity of the 1T1R configuration has been verified by pulsed testing. This work paves the road for further optimization of 1T1R devices based on CNTFET and their applications in large-scale neuromorphic computing arrays.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120865"},"PeriodicalIF":11.6,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-20DOI: 10.1016/j.carbon.2025.120855
Xiaomeng Jiang , Lin Xie , Ruilin Liu , Cui Ni , Baolei Wang , Zhenhua Meng , Chuanxin Hou , Xiaoyang Yang , Yuping Zhang , Wei Du , Xiubo Xie
{"title":"Co/O2 contact regulation by rGO of the Co/rGO composites towards superior microwave absorption","authors":"Xiaomeng Jiang , Lin Xie , Ruilin Liu , Cui Ni , Baolei Wang , Zhenhua Meng , Chuanxin Hou , Xiaoyang Yang , Yuping Zhang , Wei Du , Xiubo Xie","doi":"10.1016/j.carbon.2025.120855","DOIUrl":"10.1016/j.carbon.2025.120855","url":null,"abstract":"<div><div>The interface and phase effective adjustment of Co provide promising perspective for designing high performance microwave absorbers. Here, Co particles with face-centered cubic and hexagonal close-packed structures are obtained and loaded onto the rGO sheets. During different oxidation times (0–60 min), the rGO sheet can limit the diffusion of O<sub>2</sub> and thus tune the contact of Co with O<sub>2</sub> with tunable oxidation kinetics. Kirkendall effects effectively tune the particle size and the Co changes to CoO and/or Co<sub>3</sub>O<sub>4</sub> and can completely transfers to Co<sub>3</sub>O<sub>4</sub> under oxidation time of 60 min. The phase changes should show influences on the micro-heterogeneous interface and thus enhance interfacial polarization. The Co/rGO-10 composite exhibits superior microwave absorption (MWA) performance with a minimum reflection loss (RL<sub>min</sub>) of −48.2 dB at 17.76 GHz (2.3 mm thickness) and an effective absorption bandwidth (EAB) of 6.32 GHz at 3.0 mm thickness. The enhanced performance is primarily attributed to interfacial polarization effects, and the synergistic interaction between dielectric loss and magnetic loss. The conductive, dipole polarization loss together with the interfacial polarization caused by built-in electric field in the heterogeneous interfaces contribute to the efficient MWA performance. Theoretical calculations further reveal the interfacial charge transfer and work function modulation mechanisms (built-in electric field) at the heterogeneous interfaces, providing atomic-level insights into the enhanced dielectric response. This work deepens the understanding of rGO sheet roles in oxidation of Co, and provides a promising strategy for interface tunable oxides MWA materials through oxidation.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120855"},"PeriodicalIF":11.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-20DOI: 10.1016/j.carbon.2025.120856
Yinghan Zhang , Jiarui Fan , Meiling Zhu , Xin Wang , Weijie Li , Yuqing Zhang , Jinzhao Shi , Qi Zheng , Guojun Zhang , Lianjun Wang , Wan Jiang
{"title":"Hierarchical structure and compositional engineering in MOF-derived carbon nanocomposites via polyoxometalate-mediated coordination competition for enhanced electromagnetic wave absorption","authors":"Yinghan Zhang , Jiarui Fan , Meiling Zhu , Xin Wang , Weijie Li , Yuqing Zhang , Jinzhao Shi , Qi Zheng , Guojun Zhang , Lianjun Wang , Wan Jiang","doi":"10.1016/j.carbon.2025.120856","DOIUrl":"10.1016/j.carbon.2025.120856","url":null,"abstract":"<div><div>Hierarchical structure engineering and multicomponent design are pivotal for developing high-performance electromagnetic wave (EMW) absorbers, however, conventional synthetic strategies still face significant challenges in simultaneously achieving precise control over multi-component, microstructural construction and size regulation. Herein, an asymmetric hierarchical metal–organic framework (MOF)-derived nanoporous carbon (NPC) composite is fabricated via a polyoxometalate (POM)-mediated coordination competition strategy. Tungsten-based POM (W-POM, Na<sub>3</sub> [PW<sub>12</sub>O<sub>40</sub>]) acts as a dynamic structural modulator during Cu-MOF assembly. By competitively coordinating with Cu(II) ions against organic ligands, the W-POM precisely regulates Cu(II) ion release kinetics and nucleation, enabling concurrent control over precursor size (100–400 nm), morphology (evolving from octahedra to aggregated polyhedra), and composition. Subsequent pyrolysis transforms these W-POM@Cu-MOF precursors into a hierarchical architecture featuring asymmetrically grown Cu nanosheets on porous carbon matrix, alongside embedded Cu nanoparticles and W-POM-derived Na<sub>2</sub>WO<sub>4</sub> heterostructures (Cu/W/NPC). This unique anisotropic configuration synergistically enhances microwave attenuation, where Cu nanosheets and porous matrix prolong propagation paths and induce multi-scattering, while the uniformly dispersed Na<sub>2</sub>WO<sub>4</sub> and heterogeneous interfaces significantly boost interfacial polarization and dipole polarization. Consequently, the optimized nanocomposite exhibits superior EMW absorption performance, achieving a minimum reflection loss (RL<sub>min</sub>) of −61.4 dB and a broad effective absorption bandwidth (EAB) of 6.64 GHz. COMSOL simulations quantitatively confirm the abundant interfaces and porous structures synergize polarization dissipation and multi-reflection mechanisms, optimizing impedance matching. Radar cross-section (RCS) simulations further demonstrate significant attenuation (29.84 dB m<sup>2</sup>), highlighting practical stealth utility. This work establishes a versatile POM-mediated coordination competition paradigm for architecturally and compositionally tailored MOF-derived advanced EMW absorbers.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120856"},"PeriodicalIF":11.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CarbonPub Date : 2025-09-20DOI: 10.1016/j.carbon.2025.120852
Gyuho Choi , Sangjin Yoon , Yeongju Jung , Huijae Park , Dohyung Kim , Sejong Yu , Minwoo Kim , Seung Hwan Ko
{"title":"Robust freestanding laser-induced graphene electrodes for wearable energy devices","authors":"Gyuho Choi , Sangjin Yoon , Yeongju Jung , Huijae Park , Dohyung Kim , Sejong Yu , Minwoo Kim , Seung Hwan Ko","doi":"10.1016/j.carbon.2025.120852","DOIUrl":"10.1016/j.carbon.2025.120852","url":null,"abstract":"<div><div>Laser-induced graphene (LIG) offers a low-cost, eco-friendly method for graphene synthesis under ambient conditions, addressing limitations of conventional high-temperature, high-pressure processes. However, conventional LIG suffers from very poor mechanical robustness and adhesion, which limits the actual device applications especially wearable electronics. This is because single-sided laser irradiation often requires excessive laser power to achieve graphene formation throughout the entire thickness of the substrate, which leads to ablation, substrate loss, and collapse of the porous network—ultimately degrading electrochemical performance. To overcome these limitations, we introduce a double-sided laser irradiation process that sequentially irradiates both sides of a PEDOT:PSS/Kevlar nanofiber composite film to fabricate a freestanding LIG. This method minimizes ablation and maximizes active surface area of graphene electrode and enhance the areal capacitance and capacitance retention of flexible supercapacitors. Importantly, resulting LIG electrodes inherit the electrical conductivity of PEDOT:PSS and mechanical robustness of Kevlar nanofibers from the composite film, even after laser processing. These freestanding, transferable electrodes conformally adhere to substrates of various materials, curvatures, or flexibilities without additional support and serve as heaters, sensors, and reconfigurable energy modules. This work offers a scalable strategy for soft, multifunctional electronics, advancing wearable energy storage systems, conformable sensors, and integrated flexible devices.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120852"},"PeriodicalIF":11.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}