Issue 46, 2023

Electrolyte-philicity of electrode materials

Abstract

The electrochemical interfacial interaction of electrode materials with liquid electrolytes in electrochemical energy storage systems including supercapacitors, metal ion batteries, and metal-based batteries have become a research hotspot and play a decisive role in electrochemical energy storage in terms of charging and discharging reaction principles of the electrode materials. However, there is still a long way from maturity due to the challenges related to the unsatisfactory electrolyte-philicity of electrode materials. In the last 20 years, several studies have been directed at discovering strategies to improve the electrolyte-philicity of electrode materials, optimizing the electrochemical interfacial interaction of the electrode materials with liquid electrolytes and exploring the relationship between electrolyte-philicity and electrochemical energy storage performance in the charging and discharging processes of the electrode materials. Unfortunately, the systematic and in-depth understanding of electrolyte-philicity of electrode materials has not been grasped in electrochemical energy storage systems. In this review, we highlight the fundamental scientific understanding of electrolyte-philicity of electrode materials and the relationship among electrolyte-philicity and electrochemical energy storage performance of electrode materials. The definition of electrolyte-philicity of electrode materials is first proposed based on the interaction between the electrode material and electrolyte ions as the essence of electrochemical energy storage of the electrode materials. More important, how the electrolyte-philicity of electrode materials optimizes the electrochemical energy storage performance of the electrode materials has been expounded from the rapid and effective contact of the electrode materials with electrolyte ions under uncharged state to electrochemical interfacial interaction between the electrode materials and electrolytes under the charged state. Then, the fundamental physical and chemical interactions so that the electrode materials may be electrolyte-philic are summarized, and the mechanisms of improving the electrolyte-philicity of electrode materials by surface modification are illustrated based on those interactions. Finally, the future perspectives for important areas of electrolyte-philicity of electrode materials are presented.

Graphical abstract: Electrolyte-philicity of electrode materials

Article information

Article type
Feature Article
Submitted
29 jan 2023
Accepted
18 apr 2023
First published
19 apr 2023

Chem. Commun., 2023,59, 6969-6986

Electrolyte-philicity of electrode materials

L. Zhao and F. Ran, Chem. Commun., 2023, 59, 6969 DOI: 10.1039/D3CC00412K

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