A pseudocapacitive molecule-induced strategy to construct flexible high-performance asymmetric supercapacitors  

作　　者：Yingqi Heng Xiang Qin Heng Fang Genhui Teng Dawei Zhao Dongying Hu 

机构地区：[1]School of Resources,Environment and Materials,Guangxi University,Nanning,530004,China [2]Key Laboratory on Resources Chemicals and Materials of Ministry of Education,Shenyang University of Chemical Technology,Shenyang,110142,China [3]State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures,Guangxi University,Nanning,530004,China

出　　处：《Frontiers of Chemical Science and Engineering》2023年第9期1208-1220,共13页化学科学与工程前沿（英文版）

基　　金：This work was supported by the Natural Science Foundation of Guangxi(Grant No.2018GXNSFBA138025);the National Natural Science Foundation of China(Grant No.32171720).

摘　　要：The combination of high-voltage windows and bending stability remains a challenge for supercapacitors.Here,we present an“advantage-complementary strategy”using sodium lignosulfonate as a pseudocapacitive molecule to regulate the spatial stacking pattern of graphene oxide and the interfacial architectures of graphene oxide and polyaniline.Flexible and sustainable sodium lignosulfonate-based electrodes are successfully developed,showing perfect bending stability and high electronic conductivity and specific capacitance(521 F·g^(−1)at 0.5 A·g^(−1)).Due to the resulting rational interfacial structure and stable ion-electron transport,the asymmetric supercapacitors provide a wide voltage window reaching 1.7 V,outstanding bending stability and high energy-power density of 83.87 Wh·kg^(−1)at 3.4 kW·kg^(−1).These properties are superior to other reported cases of asymmetric energy enrichment.The synergistic strategy of sodium lignosulfonate on graphene oxide and polyaniline is undoubtedly beneficial to advance the process for the construction of green flexible supercapacitors with remarkably wide voltage windows and excellent bending stability.

关 键 词：molecular synergy psoudocapacitive lignosulfonate flexible electronic devices asymmetric supercapacitor wide voltage windows 

分 类 号：TM53[电气工程—电器]