Graphene Nanoribbons Enhancing the Electronic Conductivity and Ionic Diffusion of Graphene Electrodes for High-Performance Microsupercapacitors

作     者：Yan Zhang Huandi Zhang Xiaoxiao Wang Xiaowei Shi Zehua Zhao Yaling Wang Jiamei Liu Cheng Tang Guolong Wang Lei Li Yan Zhang;Huandi Zhang;Xiaoxiao Wang;Xiaowei Shi;Zehua Zhao;Yaling Wang;Jiamei Liu;Cheng Tang;Guolong Wang;Lei Li

作者机构：State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityNo.28Xianning West RoadXi’an 710049China Center for Materials ChemistryFrontier Institute of Science and TechnologyXi’an Jiaotong UniversityXi’an 710054China Instrument Analysis Center of Xi’an Jiaotong UniversityXi’an Jiaotong UniversityNo.28Xianning West RoadXi’an 710049China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2024年第7卷第4期

页      面：285-294页

核心收录：

学科分类：081702[工学-化学工艺] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by National Natural Science Foundation of China(No.52072297) Key R&D Plan of Shaanxi Province(No.2021GXLH-Z-068) Young Talent Support Plan of Xi'an Jiaotong University 

主　　题：areal energy density graphene graphene nanoribbons microsupercapacitors structure engineering 

摘      要：The electrochemical performance of microsupercapacitors with graphene electrodes is reduced by the issue of graphene sheets aggregation,which limits electrolyte ions penetration into *** the space between graphene sheets in electrodes facilitates the electrolyte ions penetration,but sacrifices its electronic conductivity which also influences the charge storage *** challenging task is to improve the electrodes’electronic conductivity and ionic diffusion simultaneously,boosting the device’s electrochemical ***,we experimentally realize the enhancement of both electronic conductivity and ionic diffusion from 2D graphene nanoribbons assisted graphene electrode with porous layer-uponlayer structure,which is tailored by graphene nanoribbons and self-sacrificial templates ethyl *** designed electrode-based device delivers a high areal capacitance of 71 mF cm^(-2)and areal energy density of 9.83μWh cm^(-2),promising rate performance,outstanding cycling stability with 97%capacitance retention after 20000 cycles,and good mechanical *** strategy paves the way for fabricating high-performance graphene-based MSCs.