简介概要

Flexible ultrathin all-solid-state supercapacitors

来源期刊:Rare Metals2018年第6期

论文作者:Rui Wang Qing-Rong Wang Min-Jie Yao Ke-Na Chen Xin-Yu Wang Li-Li Liu Zhi-Qiang Niu Jun Chen

文章页码:536 - 542

摘    要:The flexible ultrathin all-solid-state supercapacitors with good electrochemical and mechanical performance were fabricated by the facile methods. The singlewall carbon nanotubes(SWCNTs)–polyaniline(PANI)film electrodes and poly(vinyl alcohol)(PVA)/H3PO4 electrolyte film were prepared by spray-printing and spincoating strategies, respectively. Thus, the thickness of a supercapacitor is only 8.4 lm. When the mass ratio of SWCNT to PANI is 1:1, the tensile strength and Young’s modulus of the electrode are 10.9 and 655 MPa, respectively. The interior contact resistance of the supercapacitors based on this electrode is only 15–30 Ω. Furthermore,the specific capacitance of this electrode can reach about 355.5 F·g-1, and the supercapacitor based on this electrode maintains 87.2% of its initial specific capacitance over5000 charging/discharging cycles. Moreover, the supercapacitor shows an excellent electrochemical stability at different bending states. Therefore, the all-solid-state supercapacitors prepared by our strategies would meet the demands of wearable, lightweight, and compact energy storage devices.

详情信息展示

Flexible ultrathin all-solid-state supercapacitors

Rui Wang1,Qing-Rong Wang1,Min-Jie Yao1,Ke-Na Chen1,Xin-Yu Wang1,Li-Li Liu2,Zhi-Qiang Niu1,Jun Chen1

1. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University2. Tianjin Key Laboratory for Photoelectric Materials and Devices, School of Materials Science and Engineering, Tianjin University of Technology

摘 要:The flexible ultrathin all-solid-state supercapacitors with good electrochemical and mechanical performance were fabricated by the facile methods. The singlewall carbon nanotubes(SWCNTs)–polyaniline(PANI)film electrodes and poly(vinyl alcohol)(PVA)/H3PO4 electrolyte film were prepared by spray-printing and spincoating strategies, respectively. Thus, the thickness of a supercapacitor is only 8.4 lm. When the mass ratio of SWCNT to PANI is 1:1, the tensile strength and Young’s modulus of the electrode are 10.9 and 655 MPa, respectively. The interior contact resistance of the supercapacitors based on this electrode is only 15–30 Ω. Furthermore,the specific capacitance of this electrode can reach about 355.5 F·g-1, and the supercapacitor based on this electrode maintains 87.2% of its initial specific capacitance over5000 charging/discharging cycles. Moreover, the supercapacitor shows an excellent electrochemical stability at different bending states. Therefore, the all-solid-state supercapacitors prepared by our strategies would meet the demands of wearable, lightweight, and compact energy storage devices.

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