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Nano Research

Article Title

Ultrathin ZnS nanosheet/carbon nanotube hybrid electrode for high-performance flexible all-solid-state supercapacitor

Authors

Xiaoyi Hou, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Tao Peng, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Jinbing Cheng, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Qiuhong Yu, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Rongjie Luo, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Yang Lu, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China
Xianming Liu, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China
Jang-Kyo Kim, Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
Jun He, National Center for Nanoscience and Technology, Beijing 100190, China
Yongsong Luo, School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China Key Laboratory of Advanced Micro/Nano Functional Materials, Xinyang Normal University, Xinyang 464000, China

Keywords

multiwall C nanotubes decorated with hierarchical ultrathin zinc sulfide nanosheets (ZnS@CNT), ultrathin nanosheet, flexible, synergistic, supercapacitor

Abstract

ABSTRACT Flexible and easily reconfigurable supercapacitors show great promise for application in wearable electronics. In this study, multiwall C nanotubes (CNTs) decorated with hierarchical ultrathin zinc sulfide (ZnS) nanosheets (ZnS@CNT) are synthesized via a facile method. The resulting ZnS@CNT electrode, which delivers a high specific capacitance of 347.3 F·g–1 and an excellent cycling stability, can function as a high-performance electrode for a flexible all-solid-state supercapacitor using a polymer gel electrolyte. Our device exhibits a remarkable specific capacitance of 159.6 F·g–1, a high energy density of 22.3 W·h·kg–1, and a power density of 5 kW·kg–1. It also has high electrochemical performance even under bending or twisting. The all-solid-state supercapacitors can be easily integrated in series to power different commercial light-emitting diodes without an external bias voltage.

Graphical Abstract

Publisher

Tsinghua University Press

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