Ultralong-life and high-capacity magnesium/sodium hybrid-ion battery using a ternary CoSe/NiSe2/CuSe2 cathode and dual-ion electrolyte

Ting Zhou; Yajun Zhu; Yun Shen; Hui Qiu; Tianli Han; Jinjin Li; Jinyun Liu

doi:10.1039/D4CC00623B

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Ultralong-life and high-capacity magnesium/sodium hybrid-ion battery using a ternary CoSe/NiSe₂/CuSe₂ cathode and dual-ion electrolyte†

Ting Zhou,^a Yajun Zhu,^a Yun Shen,^b Hui Qiu,^b Tianli Han,^a Jinjin Li

*^c and Jinyun Liu

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, PR China
E-mail: jyliu@ahnu.edu.cn

^b Anhui Axxiva New Energy Technology Co., Ltd, Wuhu, Anhui 241002, PR China

^c National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
E-mail: lijinjin@sjtu.edu.cn

Abstract

An ultrahigh-performance magnesium/sodium hybrid-ion battery (MNHB) is developed using ternary CoSe/NiSe₂/CuSe₂ (CNCS) “micro-flowers” as cathode materials, working with a coordinative [Mg₂Cl₂][AlCl₄]₂ and bis(trifluoroethylsulfonyl)imide anionic sodium salt in triglyme electrolyte. After 2000 cycles at 2.0 A g⁻¹, the MNHB shows a stable capacity of 115.5 mA h g⁻¹ and a high Coulombic efficiency exceeding 99.8%. The battery shows very rapid charging, and good stability in extreme environments, providing new opportunities to develop other hybrid-ion systems.

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Article information

DOI: https://doi.org/10.1039/D4CC00623B
Article type: Communication
Submitted: 06 Feb 2024
Accepted: 12 Apr 2024
First published: 15 Apr 2024

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Chem. Commun., 2024,60, 5338-5341

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Ultralong-life and high-capacity magnesium/sodium hybrid-ion battery using a ternary CoSe/NiSe₂/CuSe₂ cathode and dual-ion electrolyte

T. Zhou, Y. Zhu, Y. Shen, H. Qiu, T. Han, J. Li and J. Liu, Chem. Commun., 2024, 60, 5338 DOI: 10.1039/D4CC00623B

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