Self-Powered Piezo-Supercapacitors Based on ZnO@Mo-Fe-MnO2 Nanoarrays

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外文摘要：The development of self-charging supercapacitor power cells(SCSPCs)has profound implications for smart electronic devices used in different fields.Here,we epitaxially electrodeposited Mo-and Fe-codoped MnO2 films on piezoelectric ZnO nanoarrays(NAs)grown on the flexible carbon cloth(denoted ZnO@Mo-Fe-MnO2 NAs).A self-charging supercapacitor power cell device was assembled with the Mo-and Fe-codoped MnO2 nanoarray electrode and poly(vinylidenefluoride-co-trifluoroethylene)(PVDF-Trfe)piezoelectric film doped with BaTiO3(BTO)and carbon nanotubes(CNTs)(denoted PVDF-Trfe/CNTs/BTO).The self-charging supercapacitor power cell device exhibited an energy density of 30 μWh cm 2 with a high power density of 40 mW cm-2 and delivered an excellent self-charging performance of 363 mV(10 N)driven by both the piezoelectric ZnO nanoarrays and the poly(vinylidenefluoride-co-trifluoroethylene)piezoelectric film doped with BaTiO3 and carbon nanotubes.More intriguingly,the device could also be self-charged by 184 mV due to residual stress alone and showed excellent energy conversion efficiency and low self-discharge rate.This work illustrates for the first time the self-charging mechanism involving electrolyte ion migration driven by both electrodes and films.A comprehensive analysis strongly confirmed the important contribution of the piezoelectric ZnO nanoarrays in the self-charging process of the self-charging supercapacitor power cell device.This work provides novel directions and insights for the development of self-charging supercapacitor power cells.

外文关键词：

MnO2piezoelectricself-chargingsupercapacitorsZnO nanoarray

作者：

Luo Sun、Zhiguo Ye、Xinyuan Peng、Shaojie Zhuang、Duosheng Li、Zhong Jin

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作者单位：

School of Materials Science and Engineering,Nanchang Hangkong University,696#,FengHeNan Road,Nanchang 330063,China

State Key Laboratory of Coordination Chemistry,MOE Key Laboratory of Mesoscopic Chemistry,MOE Key Laboratory of High Performance Polymer Materials and Technology,Jiangsu Key Laboratory of Advanced Organic Materials,School of Chemistry and Chemical Engineering Nanjing University,Nanjing 210023,China

基金：

Key Research and Development Program of Jiangxi ProvinceNational Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities of ChinaFundamental Research Funds for the Central Universities of ChinaFundamental Research Funds for the Central Universities of ChinaScientific and Technological Innovation Special Fund for Carbon Peak and Carbon Neutrality of Jiangsu ProvinceNatural Science Foundation of Jiangxi ProvinceNanjing International Collaboration Research ProgramNanjing International Collaboration Research ProgramSuzhou Gusu Leading Talent Program of Science and Technology Innovation and Entrepreneurship in Wujiang District

项目编号：

20203BBE530692017YFA020820051862026220225052187206902051438026020514380272020514380274BK2022000820192ACBL210482022010072022SX00000955ZXL2021273

出版年：

2024

DOI：

10.1002/eem2.12685

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(4)