Fine valence regulation of hydrated vanadium oxide as a novel cathode for stable potassium-ion storage

Yi-Ran Zhu; Kuo Cao; Fei Chen; Jie-Min Dong; Nai-Qing Ren; Chun-Hua Chen

doi:10.1039/d3cc02519e

Fine valence regulation of hydrated vanadium oxide as a novel cathode for stable potassium-ion storage

Chem Commun (Camb). 2023 Aug 15;59(66):10000-10003. doi: 10.1039/d3cc02519e.

Authors

Yi-Ran Zhu¹, Kuo Cao¹, Fei Chen¹, Jie-Min Dong¹, Nai-Qing Ren¹, Chun-Hua Chen¹

Affiliation

¹ CAS Key Laboratory of Precision and Intelligent Chemistry, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China. cchchen@ustc.edu.cn.

PMID: 37522160
DOI: 10.1039/d3cc02519e

Abstract

Layered V₁₀O₂₄·nH₂O with a large interlayer spacing of 14 Å is hydrothermally synthesized and used as a cathode for potassium-ion batteries. It exhibits a capacity of 110 mA h g^-1 with a capacity retention of 99.2% over 700 cycles. Its storage mechanism is identified as pseudo-capacitive intercalation.