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American Institute of Physics, APL Materials, 3(10), p. 030902, 2022

DOI: 10.1063/5.0086874

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Heteroatom-doped carbon anode materials for potassium-ion batteries: From mechanism, synthesis to electrochemical performance

Journal article published in 2022 by Yang Wang, Fei Yuan ORCID, Zhaojin Li, Di Zhang, Qiyao Yu ORCID, Bo Wang ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Carbonaceous materials are attractive anode candidates for potassium-ion batteries (PIBs) because of their cost-effectiveness, high conductivity, and considerable architecture. However, these carbon materials usually exhibit slow diffusion kinetics and huge volume variation induced by the large ionic size of K-ions, resulting in poor rate capability and cycling stability. Compared to pure carbon, heteroatom (N, S, P, and O)-doped carbons can well improve potassium storage performance by optimizing K-adsorption ability and conductivity, and, hence, exhibit a significant potential in PIBs. This review in-detail summarizes the recent progress of heteroatom-doped carbon anodes based on potassium storage mechanism, design or synthesis strategies, and electrochemical performance, mainly including single-, bi-, and tri-element doped carbons. Moreover, some critical issues and possible solutions for the development of heteroatom-doped carbon in the future are discussed. This review aims at providing a deep insight into the understanding, designing, and application of heteroatom-doped carbon anodes in PIBs and is expected to make an obvious effect on the exploration of other anodes.