Issue 12, 2021

Optimal water concentration for aqueous Li+ intercalation in vanadyl phosphate

Abstract

Development of high-performance aqueous batteries is an important goal for energy sustainability owing to their environmental benignity and low fabrication costs. Although a layered vanadyl phosphate is one of the most-studied host materials for intercalation electrodes with organic electrolytes, little attention has been paid to its use in aqueous Li+ systems because of its excessive dissolution in water. Herein, by controlling the water concentration, we demonstrate the stable operation of a layered vanadyl phosphate electrode in an aqueous Li+ electrolyte. The combination of experimental analyses and density functional theory calculations reveals that reversible (de)lithiation occurs between dehydrated phases, which can only exist in an optimal water concentration.

Graphical abstract: Optimal water concentration for aqueous Li+ intercalation in vanadyl phosphate

Supplementary files

Article information

Article type
Edge Article
Submitted
22 אוג 2020
Accepted
01 פבר 2021
First published
11 פבר 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2021,12, 4450-4454

Optimal water concentration for aqueous Li+ intercalation in vanadyl phosphate

D. Sun, M. Okubo and A. Yamada, Chem. Sci., 2021, 12, 4450 DOI: 10.1039/D0SC04647G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements