文献类型：期刊文献

英文题名：Bifunctional polyoxometalate clusters-modified single-walled carbon nanotubes for high-energy-density micro-supercapacitors

作者：Dong, Haohao[1,2];Cao, Jun[1];Ding, Yuanlong[1];Wei, Shuang[3];Guo, Zhuobin[4,5];Zhang, Liangzhu[4,6];Zhou, Xinghai[1];Liao, Yongping[1];Zhang, Qianfan[2];Wu, Zhong-Shuai[4]

机构：[1]Dalian Polytech Univ, Sch Text & Mat Engn, Dalian 116034, Peoples R China;[2]Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China;[3]Liaoning Tech Univ, Coll Min, Fuxin 123000, Liaoning, Peoples R China;[4]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China;[5]Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China;[6]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：495

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20242616441805);WOS:【SCI-EXPANDED(收录号:WOS:001261808400001)】；

基金：The work received support from National Natural Science Founda- tion of China (22309025) , Liaoning Natural Science Foundation (2021-BS -229, JYTMS20230425, 2022 -BS -269) .

语种：英文

外文关键词：Polyoxometalate clusters; High conductivity; Single-walled carbon nanotubes; Flexible micro-supercapacitors

摘要：The rapid advancement of wearable electronics has pushed the urgent demand for flexible power sources with high energy density and fast integrations. Herein, we created high-energy-density micro-supercapacitors (MSCs) based on phosphomolybdic acid (PMo12) clusters anchored single-walled carbon nanotubes (SWCNTs) via the electrostatic assembly. The SWCNT microelectrodes for MSCs were directly fabricated by an aerosol process without any solvent-based treatment. The PMo12 clusters were found to not only increase the electrical conductivity of SWCNT thin-film electrodes, but also offer significant pseudo-capacitance of MSCs. The MSCs based on PMo12-modified SWCNTs demonstrated an areal capacitance of 10.2 mF cm-2 when scanned at 5 mV s-1, coupled with a notable energy density of 0.71 mu Wh cm-2 at a power density of 7 mu W cm-2, being much higher than the one without PMo12 modification. The density functional theory simulation further reveals the enhancement of electrical conductivity and areal capacitance induced by PMo12 modifications. Moreover, our strategy is highly scalable for integrations via series or parallel connections, which could deliver higher voltage output or areal capacitance. This work demonstrates great potential for high-performance MSCs toward wearable electronics applications.