Affiliation:
1. Institute for Advanced Study School of Mechanical Engineering Chengdu University Chengdu 610106 P. R. China
2. Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Suzhou 215123 P. R. China
3. College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China
4. School of Materials Science and Engineering Zhengzhou University Zhengzhou Henan 450001 P. R. China
5. Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials School of Chemistry and Materials Fudan University Shanghai 200433 P. R. China
6. Key Laboratory of Deep Earth Science and Engineering Sichuan University Chengdu 610065 P. R. China
Abstract
AbstractThe current research of Li–S batteries primarily focuses on increasing the catalytic activity of electrocatalysts to inhibit the polysulfide shuttling and enhance the redox kinetics. However, the stability of electrocatalysts is largely neglected, given the premise that they are stable over extended cycles. Notably, the reconstruction of electrocatalysts during the electrochemical reaction process has recently been proposed. Such in situ reconstruction process inevitably leads to varied electrocatalytic behaviors, such as catalytic sites, selectivity, activity, and amounts of catalytic sites. Therefore, a crucial prerequisite for the design of highly effective electrocatalysts for Li–S batteries is an in‐depth understanding of the variation of active sites and the influence factors for the in situ reconstruction behaviors, which has not achieved a fundamental understanding and summary. This review comprehensively summarizes the recent advances in understanding the reconstruction behaviors of different electrocatalysts for Li–S batteries during the electrochemical reaction process, mainly including metal nitrides, metal oxides, metal selenides, metal fluorides, metals/alloys, and metal sulfides. Moreover, the unexplored issues and major challenges of understanding the reconstruction chemistry are summarized and prospected. Based on this review, new perspectives are offered into the reconstruction and true active sites of electrocatalysts for Li–S batteries.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Sichuan Province
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
8 articles.
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