Ni3SNanocomposite Structures Doped with Zn and Co as Long-Lifetime, High-Energy-Density, and Binder-Free Cathodes in Flexible Aqueous Nickel-Zinc Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • Yang Zhou
  • Xin Tong
  • Ning Pang
  • Yanping Deng
  • Chenhuan Yan
  • Dajun Wu
  • Shaohui Xu
  • Dayuan Xiong
  • Lianwei Wang

Detail(s)

Original languageEnglish
Pages (from-to)34292–34300
Journal / PublicationACS Applied Materials and Interfaces
Volume13
Issue number29
Online published14 Jul 2021
Publication statusPublished - 28 Jul 2021

Abstract

Flexible rechargeable Zn//Ni batteries are attractive owing to their high energy density, good safety, inexpensive cost, and simple manufacturing process. However, the effects of metal doping on the properties of Ni3S2 cathodes in Zn/Ni batteries are not well understood. Herein, a binder-free Ni3S2 electrode is doped with Zn and Co and the nanocomposite structures are prepared on nickel foam (named ZCNS/NF) by a simple two-step hydrothermal technique. The ZCNS/NF//Zn battery delivers excellent electrochemical performance such as a working voltage window can be as high as 2.05 V, a capacity of 2.3 mAh cm–2 at 12 mA cm–2, and 82% retention going through 2000 cycles at 20 mA cm–2. The battery has a maximum output area energy density of 1.8 mWh cm–2 (462 Wh kg–1) and a power density of 36.8 mW cm–2 (9.2 kW kg–1). In addition, the flexible battery remains operational while being bent at a large angle and even punctured. The high performance and robustness of the composite cathode suggest that the design principle and materials have large commercial potential in Ni//Zn batteries.

Research Area(s)

  • binder-free battery, flexibility, hydrogels, Zn and Co doping, Zn//Ni battery

Citation Format(s)

Ni3SNanocomposite Structures Doped with Zn and Co as Long-Lifetime, High-Energy-Density, and Binder-Free Cathodes in Flexible Aqueous Nickel-Zinc Batteries. / Zhou, Yang; Tong, Xin; Pang, Ning; Deng, Yanping; Yan, Chenhuan; Wu, Dajun; Xu, Shaohui; Xiong, Dayuan; Wang, Lianwei; Chu, Paul K.

In: ACS Applied Materials and Interfaces, Vol. 13, No. 29, 28.07.2021, p. 34292–34300.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review