Interfacially Ordered NiCoMoS Nanosheets Arrays on Hierarchical Ti3C2Tx MXene for High‐Energy‐Density Fiber‐Shaped Supercapacitors with Accelerated Pseudocapacitive Kinetics

Author:

Mei Xiaotong12,Yang Chao1,Chen Fangyuan1,Wang Yuting12,Zhang Yang12,Man Zengming12,Lu Wangyang12,Xu Jianhong3,Wu Guan12ORCID

Affiliation:

1. National Engineering Lab for Textile Fiber Materials and Processing Technology, School of Materials Science and Engineering Zhejiang Sci-Tech University Hangzhou 310018 P. R. China

2. Zhejiang Provincial Innovation Center of Advanced Textile Technology Shaoxing 312000 P. R. China

3. The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing 100084 P. R. China

Abstract

AbstractBalancing electrochemical activity and structural reversibility of fibrous electrodes with accelerated Faradaic charge transfer kinetics and pseudocapacitive storage are highly crucial for fiber‐shaped supercapacitors (FSCs). Herein, we report novel core–shell hierarchical fibers for high‐performance FSCs, in which the ordered NiCoMoS nanosheets arrays are chemically anchored on Ti3C2Tx fibers. Beneficial from architecting stable polymetallic sulfide arrays and conductive networks, the NiCoMoS−Ti3C2Tx fiber maintains fast charge transfer, low diffusion and OH adsorption barrier, and stabilized multi‐electronic reaction kinetics of polymetallic sulfide. Consequently, the NiCoMoS−Ti3C2Tx fiber exhibits a large volumetric capacitance (2472.3 F cm−3) and reversible cycling performance (20,000 cycles). In addition, the solid‐state symmetric FSCs deliver a high energy density of 50.6 mWh cm−3 and bending stability, which can significantly power electronic devices and offer sensitive detection for dopamine.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Zhejiang Province

Natural Science Foundation of Jiangsu Province

Publisher

Wiley

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