Homogeneous intercalated graphene/manganic oxide hybrid fiber electrode assembly by non-liquid-crystal spinning for wearable energy storage  

作　　者：Guoyin Chen Weiming Wang Xin Lu Innocent Tendo Mugaanire Yang Zhang Yulu Ai Kai Hou Benjamin S.Hsiao Meifang Zhu 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,2999 North Renmin Road,Shanghai 201620,China [2]Department of Chemistry,Stony Brook University,Stony Brook,NewYork 11794,USA

出　　处：《Journal of Materials Science & Technology》2022年第2期1-9,共9页材料科学技术（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities(2232021D-05);the National Natural Science Foundation of China(Nos.51733002,51803022,51673038);the Science and Technology Commission of Shanghai Municipality(20JC1414900,20JC1414901);National Key Research and Development Program of China(2016YFA0201702/2016YFA0201700);Program for Changjiang Scholars and Innovative Research Team in University(IRT16R13);Science and Technology Commission of Shanghai Municipality(16JC1400700);Innovation Program of Shanghai Municipal Education Commission(2017–01–07–00–03E00055);supported by the Fundamental Research Funds for the Central Universities;Graduate Student Innovation Fund of Donghua University(CUSF-DH-D-2020038)。

摘　　要：Reduced graphene oxide(rGO)-based fibers with high electrochemical performance have recently showed great potential in the field of flexible energy storage devices.However,they still suffer from low capacitance due to the severe stacking of graphene sheets.Hybrids with nanofillers are an efficient way to improve the electrochemical performance of rGO fibers.Nevertheless,controlling the distribution of nanoparticles in the matrix is still an enormous challenge due to the strong attraction among these nanoparticles which results into agglomeration.Here,we continually prepared rGO hybrid fibers via nonliquid-crystal spinning,accompanied by chemical reduction.Manganic oxide(Mn OX)nanoparticles remained well-dispersed in GO dispersion during the continuous spinning of rGO/Mn OXhybrid fibers.Results showed that rGO/Mn OX-20 hybrid fibers possessed the best capacitance of 123.3 F g^(-1)(87.6 F cm^(-3))and 97.1 F g^(-1)(68.9 F cm^(-3))at the current density of 0.2 A g^(-1),and 0.5 A g^(-1)respectively.Furthermore,a fiber-shaped all-solid-state supercapacitor assembly from the optimized hybrid fibers demonstrated an energy density of 2.67 m Wh cm^(-3)(3.76 m Wh g^(-1))at the power density of 24.76 m Wh cm^(-3)(34.89 m Wh g^(-1)).These fiber-based devices show great potential for application in the fields of wearable electronics and energy storage devices.

关 键 词：rGO/MnOx Well-dispersion Hybrid fiber High performance 

分 类 号：TQ340.6[化学工程—化纤工业] TM53[电气工程—电器]