Direct mask-free fabrication of patterned hierarchical graphene electrode for on-chip micro-supercapacitors

作     者：Yaopeng Wu Jinghong Chen Wei Yuan Xiaoqing Zhang Shigen Bai Yu Chen Bote Zhao Xuyang Wu Chun Wang Honglin Huang Yong Tang Zhenping Wan Shiwei Zhang Yingxi Xie Yaopeng Wu;Jinghong Chen;Wei Yuan;Xiaoqing Zhang;Shigen Bai;Yu Chen;Bote Zhao;Xuyang Wu;Chun Wang;Honglin Huang;Yong Tang;Zhenping Wan;Shiwei Zhang;Yingxi Xie

作者机构：School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou 510640China Intelligent Perception InstituteZhejiang LabHangzhou 311100China School of Environment and EnergySouth China University of TechnologyGuangzhou 510006China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第143卷第12期

页      面：12-19页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 070301[理学-无机化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (No.51975218 and U22A20193) the Natural Science Foundation of Guangdong Province (No.2021A1515010642) the Science and Technology Planning Project of Guangdong Province (No.2021A0505110002) the Fundamental Research Funds for the Central Universities (No.2022ZYGXZR101) the S&T Innovation Projects of Zhuhai City (No.ZH01110405180034PWC) 

主　　题：On-chip micro-supercapacitors Mask-free fabrication Macroscopic assembly Patterned graphene film Hierarchical structure 

摘      要：Graphene-based electrodes with rational structural design have shown extraordinary prospect for en-hanced electrical double-layer capacitance of micro-supercapacitors(MSCs).Herein,a facile fabrication method for flexible planar MSCs based on hierarchical graphene was demonstrated by using a laser-treated membrane for electrode patterning,complemented with hierarchical electrode configuration tak-ing full advantages of size-determined functional *** in-plane interdigital shape of MSCs was defined through vacuum filtration with the assistance of the functionalized polypropylene(PP)*** hierarchical graphene films were built by macroscopic assembly based on size effect of differ-ent lateral sized graphene sheets(rGO-LSL).The sample of MSCs based on rGO-L SL(MSCs-LSL)exhibited excellent volumetric capacitance of 6.7 F cm^(−3) and high energy density of 0.37 mWh cm−*** MSCs-LSL presented superb flexibility and cycling stability with no capacitance deteroriated after 2000 *** newly developed fabrication strategy is of good scalability and designability to manufacture flexible elec-trode for MSCs with customized shapes,while the construction of hierarchical graphene can enlighten the structural design of analogous two-dimensional materials for potential advanced electronics.