Issue 33, 2012

Reducing hydrated protons co-intercalation to enhance cycling stability of CuV2O5 nanobelts: a new anode material for aqueous lithium ion batteries

Abstract

The aqueous-based lithium ion batteries have attracted considerable interest because of their high safety, low cost and environmental friendliness for rechargeable energy storage. Herein, a new anode material, uniform CuV2O5 nanobelts, was prepared through a facile hydrothermal route for the first time. The detailed structures and chemical state of the as-obtained CuV2O5 were investigated and the formation mechanism was proposed. The CuV2O5 nanobelts show high electrical conductivity, which could improve their Li-ion insertion/extraction kinetics. The ex situ XRD, XPS and TG study of the lithiated electrode demonstrated that a considerable amount of hydrated protons were co-intercalated into the layer space of CuV2O5 during the charge process, finally leading to irreversible phase collapse with some amorphization. The CuV2O5 anode exhibited the best cycle performance at pH ∼8.5, indicating that reducing the co-intercalation of hydrated protons would be an effective way to improve the cycling stability of similar layered vanadates.

Graphical abstract: Reducing hydrated protons co-intercalation to enhance cycling stability of CuV2O5 nanobelts: a new anode material for aqueous lithium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
03 May 2012
Accepted
19 Jun 2012
First published
20 Jun 2012

J. Mater. Chem., 2012,22, 16957-16963

Reducing hydrated protons co-intercalation to enhance cycling stability of CuV2O5 nanobelts: a new anode material for aqueous lithium ion batteries

L. Bai, J. Zhu, X. Zhang and Y. Xie, J. Mater. Chem., 2012, 22, 16957 DOI: 10.1039/C2JM32786D

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