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Issue 99, 2019
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A non-topotactic redox reaction enabled K2V3O8 as a high voltage cathode material for potassium-ion batteries

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Abstract

When tested as the cathode material for potassium-ion batteries, K2V3O8 delivers a highly reversible capacity of over 100 mA h g−1 in the voltage range of 1.5–4.5 V with 73% capacity retained after 50 cycles. Charge–discharge is achieved by a nontopotactic process between K2V3O8 and KV3O8V ∼ −23.4%), causing the slow capacity decay.

Graphical abstract: A non-topotactic redox reaction enabled K2V3O8 as a high voltage cathode material for potassium-ion batteries

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Article information


Submitted
12 Oct 2019
Accepted
19 Nov 2019
First published
20 Nov 2019

Chem. Commun., 2019,55, 14988-14991
Article type
Communication

A non-topotactic redox reaction enabled K2V3O8 as a high voltage cathode material for potassium-ion batteries

Y. Yang, Z. Liu, L. Deng, L. Tan, X. Niu, M. M. S. Sanad, L. Zeng, Z. Zhu and Y. Zhu, Chem. Commun., 2019, 55, 14988
DOI: 10.1039/C9CC07996C

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