Recent progress in electrode materials for micro-supercapacitors

Yuanyuan Xu; Sheng Yu; Hannah M Johnson; Yutong Wu; Xiang Liu; Baizeng Fang; Yi Zhang

doi:10.1016/j.isci.2024.108786

Recent progress in electrode materials for micro-supercapacitors

iScience. 2024 Jan 4;27(2):108786. doi: 10.1016/j.isci.2024.108786. eCollection 2024 Feb 16.

Authors

Yuanyuan Xu¹, Sheng Yu², Hannah M Johnson², Yutong Wu¹, Xiang Liu¹, Baizeng Fang³, Yi Zhang¹

Affiliations

¹ School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing, Jiangsu Province 211816, China.
² Department of Chemistry, Washington State University, Pullman, WA 99164, USA.
³ School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, Guangdong 523808, China.

Abstract

Micro-supercapacitors (MSCs) stand out in the field of micro energy storage devices due to their high power density, long cycle life, and environmental friendliness. The key to improving the electrochemical performance of MSCs is the selection of appropriate electrode materials. To date, both the composition and structure of electrode materials in MSCs have become a hot research topic, and it is urgent to compose a review to highlight the most important research achievements, major challenges, opportunities, and encouraging perspectives in this field. In this review, research background of MSCs is first reviewed followed by their working principles, structural classifications, and physiochemical and electrochemical characterization techniques. Next, various materials and preparation methods are summarized, and the relationship between the MSC performance and structure and composition of materials are discussed in depth. Finally, this review provides a comprehensive suggestion on accelerating the development of electrode materials to facilitate the commercialization of MSCs.

Keywords: Devices; Energy materials.

Publication types

Review