Holey nickel hydroxide nanosheets for wearable solid-state fiber-supercapacitors

Peipei Shi; Rong Chen; Li Li; Jianing An; Li Hua; Jinyuan Zhou; Bin Liu; Peng Chen; Wei Huang; Gengzhi Sun

doi:10.1039/C7NR09682H

Holey nickel hydroxide nanosheets for wearable solid-state fiber-supercapacitors†

Peipei Shi,‡^a Rong Chen,‡^b Li Li,^a Jianing An,^c Li Hua,^a Jinyuan Zhou,

^d Bin Liu,*^b Peng Chen,

*^b Wei Huang^ae and Gengzhi Sun

*^a

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* Corresponding authors

^a Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P. R. China
E-mail: iamgzsun@njtech.edu.cn

^b School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore
E-mail: ChenPeng@ntu.edu.sg, liubin@ntu.edu.sg

^c School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore

^d School of Physical Science and Technology, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, Gansu, P. R. China

^e Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China

Abstract

Holey nickel hydroxide (Ni(OH)₂) nanosheets with a mean thickness of 2 nm are facilely synthesized, and then embedded in carbon nanotube (CNT) scaffolds to construct a hybrid fiber electrode, which shows a high volumetric capacitance of 335.9 F cm⁻³ at 0.8 A cm⁻³ and superior rate performance. The hybrid supercapacitor made from the Ni(OH)₂/CNT fiber can deliver a high specific capacitance of 24.8 F cm⁻³ and an energy density of 5.8 mW h cm⁻³ with outstanding mechanical stability under repeated bending conditions.

This article is part of the themed collection: Nanoscale 10th Anniversary: Top Authors

Nanoscale

Holey nickel hydroxide nanosheets for wearable solid-state fiber-supercapacitors†

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