Ion Intercalation Process in MXene Pseudocapacitors With Aqueous and Non-Aqueous Electrolytes

Book chapter (2023)

Authors

C. Chen RST/Storage of Electrochemical Energy - , Jilin University

Yu Gao Jilin University

Xuehang Wang RST/Storage of Electrochemical Energy -

Research Group

RST/Storage of Electrochemical Energy () (TU Delft)

2D MXenes Ion accessibility Ion intercalation Pseudocapacitor

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http://resolver.tudelft.nl/uuid:29a6d768-fcf5-4faf-95d9-06e5018a3ac8

Published Date

2023

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Storage of Electrochemical Energy

Abstract

The 2D transition metal carbide and nitride MXenes, especially titanium carbide, are ideal electrode materials for pseudocapacitors due to their metallic conductivity, open interlayer space, and redox-active surface. This article summarizes the electrochemical ion intercalation processes in MXene-based pseudocapacitors with both aqueous and non-aqueous electrolytes. We discuss the impact of ion intercalation on the interfacial characteristics of MXenes, such as interlayer space, surface groups, and interfacial ion-solvent arrangement. Furthermore, we reveal the importance of ion accessibility on the overall pseudocapacitive performance of MXenes and summarize the general strategies to facilitate ion intercalation.