image: THE INTRODUCTION OF DEFECTS INTO ELECTRODE MATERIALS FOR METAL-BASED BATTERIES IS AN EFFECTIVE STRATEGY TO IMPROVE BATTERY PERFORMANCE, DUE TO DEFECTIVE CATALYSTS HAVE THE ADVANTAGES OF HIGH ACTIVITY, LOW COST AND ENVIRONMENTAL FRIENDLINESS. IN THIS REVIEW, THE TYPES, SYNTHESIS METHODS AND ADVANCED CHARACTERIZATION TECHNIQUES OF DEFECTS, THE CATALYTIC MECHANISM, DESIGN PRINCIPLES AND LATEST RESEARCH PROGRESS OF DEFECT ELECTROCATALYSTS IN METAL-BASED BATTERIES ARE SYSTEMATICALLY SUMMARIZED. view more
Credit: Chinese Journal of Catalysis
Realizing the "peak carbon dioxide emissions and carbon neutrality goals" has gradually become one of the important ways to alleviate the energy crisis and environmental pollution. At present, due to the characteristics of clean and friendly energy storage and conversion technology, metal-based batteries have been widely studied. Among them, the development of advanced electrocatalyst electrode materials plays a decisive role in improving its energy storage efficiency and realizing the large-scale development of electrocatalyst technology. In recent years, researchers have been committed to developing high-performance, low-cost and environment-friendly catalysts. Defective electrocatalysts have the advantages of high activity and sufficient exposure of active sites, so the construction of defective electrocatalysts is considered to be an effective strategy to improve the performance of metal-based batteries. Specifically, defect engineering can help to adjust the local atomic structure and coordination environment of the battery electrode material, regulate the electronic and structural characteristics of the electrocatalyst, to optimize and improve the electrochemical performance of the battery. In order to meet the practical application of metal-based batteries, new and efficient defective catalysts have sprung up.
Recently, a research team led by Prof. Lei Wang from Qingdao University of Science and Technology, China reported a systematic review about the catalytic mechanism, design principles and the latest research progress of defective electrocatalysts in metal-based batteries. First, this review introduces the strategies for introducing defects into electrode materials and the characterization technology of defects in detail, and summarizes the common tools for exploring the catalytic mechanism of defects in electrocatalysts: DFT calculation and in-situ characterization techniques. In addition, starting from the mainstream reaction mechanism of electrocatalysis (OER, ORR, S catalysis, etc.), the influence of defects in electrocatalysis and the design principles of defect metal-based battery electrode materials are concluded. Besides, the latest research progress of different types of defects is reviewed for several important metal-based batteries (zinc-air battery, lithium-sulfur battery, lithium-oxygen battery, etc.). Finally, the current challenges and expectations in the field of defects electrocatalysis are analyzed, which aims to improve the activity of catalytic electrode materials through defect engineering and promote the commercialization process of clean energy storage devices. This review not only summarizes the great potential of defect engineering in the field of electrocatalysis, but also has an important guiding significance for the rational design of new efficient catalysts. The reviews were published in Chinese Journal of Catalysis (https://doi.org/10.1016/S1872-2067(22)64168-8).
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This work was supported by the Natural Science Foundation of Shandong Province (ZR2021QE037), the National Natural Science Foundation of China (51802171, 52072197), the China Postdoctoral Science Foundation (2020M682135), Postdoctoral Innovation Project of Shandong Province (202102039), Postdoctoral Applied Research Project of Qingdao Outstanding Youth Foundation of Shandong Province, China (ZR2019JQ14), Taishan Scholar Young Talent Program (tsqn201909114), Major Basic Research Program of Natural Science Foundation of Shandong Province (ZR2020ZD09).
About the Journal
Chinese Journal of Catalysis is co-sponsored by Dalian Institute of Chemical Physics, Chinese Academy of Sciences and Chinese Chemical Society, and it is currently published by Elsevier group. This monthly journal publishes in English timely contributions of original and rigorously reviewed manuscripts covering all areas of catalysis. The journal publishes Reviews, Accounts, Communications, Articles, Highlights, Perspectives, and Viewpoints of highly scientific values that help understanding and defining of new concepts in both fundamental issues and practical applications of catalysis. Chinese Journal of Catalysis ranks among the top two journals in Applied Chemistry with a current SCI impact factor of 12.92. The Editors-in-Chief are Profs. Can Li and Tao Zhang.
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Chinese Journal of Catalysis