In-situ growth of flexible 3D hollow tubular Cu2S nanorods on Cu foam for high electrochemical performance supercapacitor

Xinrui He; Yalin Hu; Hanqing Tian; Zhipeng Li; Pei Huang; Jing Jiang; Chao Wang

Journal of Materiomics (Mar 2020)

In-situ growth of flexible 3D hollow tubular Cu2S nanorods on Cu foam for high electrochemical performance supercapacitor

Xinrui He,
Yalin Hu,
Hanqing Tian,
Zhipeng Li,
Pei Huang,
Jing Jiang,
Chao Wang

Affiliations

Xinrui He: Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Yalin Hu: Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Hanqing Tian: Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Zhipeng Li: Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Pei Huang: Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Jing Jiang: Corresponding author.; Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
Chao Wang: Corresponding author.; Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China

Journal volume & issue: Vol. 6, no. 1
pp. 192 – 199

Abstract

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For pursing high-performance supercapacitors, both of the design strategy and structural characteristic of electrode materials are crucial. Herein, we report the in-situ growth of flexible self-assembled 3D hollow tubular Cu2S nanorods on Cu foam substrate (Cu2S@Cu). The Cu substrate is simultaneously acted as a copper source and a collector, which reduces the contact resistance. Moreover, the highly ordered 3D unique structure increases the redox reactive sites and enhances the ion transmission effectively, resulting in greatly improved electrochemical performance. Based on the Cu2S@Cu electrode, the supercapacitor exhibits high areal capacitance of 1000 mF cm−2 at a current density of 2 mA cm−2, and great cycle stability, maintaining 96.9% capacitance after 10,000 cycles. Furthermore, the supercapacitor also shows an excellent flexibility with no significant decrease in the twisting or bending state. The capacity retention rates are 99.8% and 86.1%, respectively, and finally recover to 99.3%, confirming its great potential in practical application for portable electronic devices. Keywords: in-situ, 3D hollow tubular Cu2S nanorods, Flexible, Supercapacitor

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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