A polyoxovanadate-based metal–organic framework unlocks the potential for advanced calcium-ion storage

Yiran Cao; Lixiao Xiang; Wei Wei; Wenhua Yang; Zhe Li; Haoyu Wu; Jie Xu; Xia Wang; Jikun Li; Ying Xiao

doi:10.1039/D5CC06156C

A polyoxovanadate-based metal–organic framework unlocks the potential for advanced calcium-ion storage

Yiran Cao,†^ab Lixiao Xiang,†^a Wei Wei,^a Wenhua Yang,

^a Zhe Li,^a Haoyu Wu,^a Jie Xu,^a Xia Wang,

*^a Jikun Li

*^c and Ying Xiao

*^b

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* Corresponding authors

^a College of Physics, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, P. R. China
E-mail: wangxiakuaile@qdu.edu.cn

^b State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, National Engineering Research Center for Fuel Cell and Hydrogen Source Technology, Beijing University of Chemical Technology, Beijing 100029, P. R. China
E-mail: yxiao@buct.edu.cn

^c College of Chemistry and Chemical Engineering, Taishan University, Tai’an 271021, P. R. China
E-mail: lijk0212@163.com

Abstract

To mitigate kinetic barriers induced by the high charge density of Ca²⁺, we engineered a Co,V-POMOFs/GO hybrid. Synergizing multi-electron redox POMs and stable MOFs with volume-buffering GO, this cathode delivers 320.45 mAh g⁻¹ at 50 mA g⁻¹ with extended cycling stability, establishing a robust paradigm for advanced multivalent battery design.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

Chemical Communications

A polyoxovanadate-based metal–organic framework unlocks the potential for advanced calcium-ion storage

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A polyoxovanadate-based metal–organic framework unlocks the potential for advanced calcium-ion storage

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