关键词: 能源电化学材料, 序言

Abstract:

With the characteristics of electrochemical energy storage and conversion, batteries and supercapacitors have been widely used in the fields of information communication, new energy vehicle, micro-grid, distributed generation, large-scale electricity storage, and smart grid. This will further boost the rapid development of energy internet. Among various energy storage technologies, lithium batteries, sodium batteries, and supercapacitors have drawn much more attention. The performance of such electrochemical energy storage devices depends on the electrode materials and their structures. Developing low-cost energy storage system with high energy density, high power density, and long cycle life has become the key research area of electrochemical energy materials. In this special issue, eight review/research papers focusing on lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries and supercapacitors have been included. These papers have been written by the teams with rich research experience in the field of electrochemical energy materials. In particular, three invited review and research papers deal with silicon anode materials of the next-generation lithium-ion batteries. In view of the abundant sodium resource, three review papers are invited with the focus on sodium-ion batteries. Meanwhile, one invited paper handles lithium-sulfur batteries with high energy density and another supercapacitors with high power density. From these featured articles of this special issue, readers will gain general knowledge in the recent developments of electrochemical energy material involving lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries, and supercapacitors. I hope that the publication of this special issue helps the broad readers better understand the research status, trends, problems and challenges of the above-mentioned types of batteries and supercapacitors, providing a reference for in-depth research in this field and further promoting the development of China's energy electrochemical materials research. Herein, I would like to acknowledge all the authors, the reviewers and the editorial staffs for their great contributions and hard works to the publication of this special issue.