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Sodium‐ion capacitors: Materials, Mechanism, and Challenges
Author(s) -
Zhang Yadi,
Jiang Jiangmin,
An Yufeng,
Wu Langyuan,
Dou Hui,
Zhang Jiaoxia,
Zhang Yu,
Wu Shide,
Dong Mengyao,
Zhang Xiaogang,
Guo Zhanhu
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201903440
Subject(s) - anode , capacitor , battery (electricity) , cathode , materials science , capacitive sensing , nanotechnology , lithium (medication) , energy storage , potassium ion battery , fabrication , supercapacitor , engineering physics , electrochemistry , electrical engineering , chemistry , electrode , voltage , lithium vanadium phosphate battery , engineering , physics , power (physics) , medicine , alternative medicine , quantum mechanics , endocrinology , pathology
Sodium‐ion capacitors (SICs), designed to attain high energy density, rapid energy delivery, and long lifespan, have attracted much attention because of their comparable performance to lithium‐ion capacitors (LICs), alongside abundant sodium resources. Conventional SIC design is based on battery‐like anodes and capacitive cathodes, in which the battery‐like anode materials involve various reactions, such as insertion, alloying, and conversion reactions, and the capacitive cathode materials usually depend on activated carbon (AC). However, researchers have attempted to construct SICs based on battery‐like cathodes and capacitive anodes or a combination of both in recent years. In this Minireview, charge storage mechanisms and material design strategies for SICs are summarized, with a focus on the battery‐like anode materials from both inorganic and organic sources. Additionally, the challenges in the fabrication of SICs and future research directions are discussed.