首页|NiCo-S nanosheets grown on Ti3C2Tx-wrapped carbon cloth for high-performance flexible supercapacitor
NiCo-S nanosheets grown on Ti3C2Tx-wrapped carbon cloth for high-performance flexible supercapacitor
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NSTL
Elsevier
? 2022 Elsevier B.V.In this study, Ti3C2Tx was directly deposited on carbon cloth (CC) to obtain a flexible substrate for NiCo-S. Then, 3D self-supported flexible NiCo-S/Ti3C2Tx/CC composite electrode was prepared by a two-step hydrothermal method. Compared with the NiCo-S/CC electrode, the specific capacity of the NiCo-S/Ti3C2Tx/CC electrode increases from 908 to 1690 C g?1 at 2 A g?1. The rate capability (2–20 A g?1) increases from 42% to 66%, and the cyclic performance (5000 charge-discharge cycles at a current density of 10 A g?1) increases from 50% to 82%. The enhanced electrochemical performance may be attributed to the introduction of Ti3C2Tx, which reduces the resistance of composite and facilitates the electron/ion transport, while the presence of Ti2+ in Ti3C2Tx provides more sites for redox reactions. The assembled flexible all-solid supercapacitor (NiCo-S/Ti3C2Tx/CC//AC) manifests a high energy density of 62 Wh kg?1 at 800 W kg?1 and an excellent cyclic stability with 89% capacity retention after 5000 cycles at 10 A g?1. In addition, the device demonstrates no obvious capacity change at different states and bending angles, showing broad application prospects in high-performance wearable energy-storage devices.
FlexibleSelf-supportedSupercapacitorTi3C2Tx
He L.、Wu F.、Bai M.、Fang L.、Hu J.、Ruan H.、Zhang S.、Hu B.、Zhou M.、Luo H.
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State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials College of Physics Chongqing University
College of Materials Science and Engineering Chongqing University of Arts and Sciences
College of Software Chongqing College of Electronic Engineering
College of Chemistry and Chemical Engineering Chongqing University
Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China College of Optoelectronic Engineering Chongqing University
Key Laboratory of Optoelectronic Functional Materials College of Physics and Electronic Engineering Chongqing Normal University
NSTL
Elsevier
