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Few-layer NiPS3 nanosheets as bifunctional materials for Li-ion storage and oxygen evolution reaction

Abstract

Constructing two-dimensional (2D) ultrathin nanosheets is considered as a promising strategy for enhancing the electrochemical performance, owing to their large surface area and fast electron transport. In this study, the ultrathin few-layer NiPS3 nanosheets are obtained and systematically investigated by a high-yield liquid phase exfoliation from its bulk layered crystal, and are exploited as the anodes for lithium ion battery (LIB) and electrocatalyst for oxygen evolution reaction (OER). When evaluated as anode for LIB, NiPS3 nanosheets show excellent electrochemical properties in terms of stable cycling performance and rate capabilities. A stable reversible capacity of 796.2 mAh g-1 is delivered at 150th cycle at a current density of 100 mA g-1. As for OER, the exfoliated few-layer NiPS3 nanosheets have demonstrated excellent electrocatalytic performance, such as a low overpotential of 301 mV at the current density of 10 mA cm-2, a small Tafel slope 43 mV dec-1, and an outstanding long-term durability. This work is expected to make a contribution to develop next generation high-performance electrochemical active materials for catalysts and batteries.

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Publication details

The article was received on 23 Nov 2017, accepted on 31 Jan 2018 and first published on 01 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR08745D
Citation: Nanoscale, 2018, Accepted Manuscript
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    Few-layer NiPS3 nanosheets as bifunctional materials for Li-ion storage and oxygen evolution reaction

    R. Dangol, Z. Dai, A. Chaturvedi, Y. Zheng, Y. Zhang, K. N. Dinh, B. Li, Y. Zong and Q. Yan, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C7NR08745D

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