K0.36(H2O)yWS2: a new layered compound for reversible hydrated potassium ion intercalation in aqueous electrolyte

Yuanlv Mao; Miao Xie; Wei Zhao; Kaidi Yuan; Yuqiang Fang; Fuqiang Huang

doi:10.1039/C9RA07718A

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K_0.36(H₂O)_yWS₂: a new layered compound for reversible hydrated potassium ion intercalation in aqueous electrolyte†

Yuanlv Mao,‡^ab Miao Xie,‡^ab Wei Zhao,*^a Kaidi Yuan,^c Yuqiang Fang^ab and Fuqiang Huang

*^ad

Author affiliations

* Corresponding authors

^a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China
E-mail: zhaowei220@mail.sic.ac.cn, huangfq@mail.sic.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, China

^c ShanghaiTech University, Shanghai 201210, China

^d State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

Abstract

This work reports the synthesis of a new quasi two-dimensional layered compound, K_0.36(H₂O)_yWS₂, for aqueous potassium ion storage. Its crystal structure determined by single crystal X-ray diffraction is composed of WS₂ layers and disordered hydrated K⁺ stacking along the c direction alternately. Due to the large interlayer spacing and high conductivity, K_0.36(H₂O)_yWS₂ is demonstrated to be a stable host for reversible intercalation and de-intercalation of hydrated K⁺ in K₂SO₄ aqueous solution.

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Article information

DOI: https://doi.org/10.1039/C9RA07718A
Article type: Paper
Submitted: 23 Sep 2019
Accepted: 03 Oct 2019
First published: 10 Oct 2019
This article is Open Access

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RSC Adv., 2019,9, 32323-32327

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K_0.36(H₂O)_yWS₂: a new layered compound for reversible hydrated potassium ion intercalation in aqueous electrolyte

Y. Mao, M. Xie, W. Zhao, K. Yuan, Y. Fang and F. Huang, RSC Adv., 2019, 9, 32323 DOI: 10.1039/C9RA07718A

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