A review of hard carbon anode: Rational design and advanced characterization in potassium ion batteries

InfoMat

Hang Lei¹  Shaozao Tan¹  Likun Pan²  Xiyun Zhang³  Zilong Wang³  Wenjie Mai³  Jinliang Li³  Liang Ma³  Zhong Ji³ 

[1] Guangdong Engineering & Technology Research Centre of Graphene‐like Materials and Products, Department of Chemistry, College of Chemistry and Materials Science Jinan University Guangzhou China;Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science East China Normal University Shanghai China;Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics Jinan University Guangzhou Guangdong China;

关键词: advanced characterization;    hard carbon;    heteroatom doping;    potassium ion batteries;    structural engineering;   

DOI  :  10.1002/inf2.12272

来源: DOAJ

【 摘 要 】

Abstract K‐ion batteries (KIBs) have attracted tremendous attention and seen significant development because of their low price, high operating voltage, and properties similar to those of Li‐ion batteries. In the field of development of full batteries, exploring high‐performing and low‐cost anode materials for K‐ion storage is a crucial challenge. Owing to their excellent cost effectiveness, abundant precursors, and environmental benignancy, hard carbons (HCs) are considered promising anode materials for KIBs. As a result, researchers have devoted much effort to quantify the properties and to understand the underlying mechanisms of HC‐based anodes. In this review, we mainly introduce the electrochemical reaction mechanism of HCs in KIBs, and summarize approaches to further improve the electrochemical performance in HC‐based materials for K‐ion storage. In addition, we also highlight some advanced in situ characterization methods for understanding the evolutionary process underlying the potassiation–depotassiation process, which is essential for the directional electrochemical performance optimization of KIBs. Finally, we raise some challenges in developing smart‐structured HC anode materials for KIBs, and propose rational design principles and perspectives serving as the guidance for the targeted optimization of HC‐based KIBs.

【 授权许可】

Unknown