Issue 10, 2019

Single-crystal and hierarchical VSe2 as an aluminum-ion battery cathode

Abstract

Aluminum-ion batteries (AIBs) with high safety, low cost and abundant resources have been regarded as a promising candidate for relieving the partial resource shortage of Li-ion batteries. However, the absence of an appropriate cathode material with a high capacity and good cycling properties makes it hard to apply them for electronic devices. In this work, a new aluminum-ion battery is assembled with a hierarchical vanadium diselenide (VSe2) cathode based on an ionic liquid electrolyte 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl)/AlCl3. Brick-like VSe2 can be successfully synthesized through a facile hydrothermal method. As the cathode of AIBs, VSe2 delivers two obvious discharge voltage plateaus of ∼1.2 V and ∼0.6 V vs. Al/AlCl4. The initial specific discharge capacity is as high as 650 mA h g−1 at a current density of 100 mA g−1, and the reversible capacity is about 50 mA h g−1 with a coulombic efficiency of about 94% after 100 cycles. Moreover, the energy storage mechanism of VSe2 in aluminum-ion batteries is confirmed.

Graphical abstract: Single-crystal and hierarchical VSe2 as an aluminum-ion battery cathode

Supplementary files

Article information

Article type
Paper
Submitted
08 Maijs 2019
Accepted
26 Jūl. 2019
First published
29 Jūl. 2019

Sustainable Energy Fuels, 2019,3, 2717-2724

Single-crystal and hierarchical VSe2 as an aluminum-ion battery cathode

H. Lei, M. Wang, J. Tu and S. Jiao, Sustainable Energy Fuels, 2019, 3, 2717 DOI: 10.1039/C9SE00288J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements