Defect Chemistry on Electrode Materials for Electrochemical Energy Storage and Conversion

Abstract Efficient and sustainable clean energy technology is an urgent need to solve energy crisis and alleviate environmental pollution. Reasonable design of electrode materials can effectively improve the performance of electrochemical energy storage and conversion devices. As an effective method to control the properties of electrode materials, defects have recently received extensive attention. Herein, in this review, we will systematically summarize the application of defect chemistry on electrode materials for electrochemical energy storage and conversion. Firstly, we mainly describe the research content of defect chemistry from three aspects, including defect construction, the dynamic evolution and regulation of defects. Based on those understanding, the applications of defect chemistry in fuel cells, metal‐ion batteries and carbon/nitrogen fixation are discussed, respectively. Finally, the existing challenges and future development prospects of defect chemistry are proposed. Overall, we hope this review could help readers to better understand and apply defect chemistry on electrode materials.