Electrolyte/Electrode Interfaces in All-Solid-State Lithium Batteries: A Review

• Published in: Electrochemical energy reviews 2021-06, Vol.4 (2), p.169-193
• Main Authors: Pang, Yuepeng, Pan, Jinyu, Yang, Junhe, Zheng, Shiyou, Wang, Chunsheng
• Format: Article
• Language: English
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Electrochemistry; Industrial Chemistry/Chemical Engineering; Renewable and Green Energy; Review Article
• ISSN: 2520-8489; 2520-8136
• DOI: 10.1007/s41918-020-00092-1

All-solid-state lithium batteries are promising next-generation energy storage devices that have gained increasing attention in the past decades due to their huge potential towards higher energy density and safety. As a key component, solid electrolytes have also attracted significant attention and have experienced major breakthroughs, especially in terms of Li-ion conductivity. However, the poor electrode compatibility of solid electrolytes can lead to the degradation of electrolyte/electrode interfaces, which is the major cause for failure in all-solid-state lithium batteries. To address this, this review will summarize the in-depth understanding of physical and chemical interactions between electrolytes and electrodes with a focus on the contact, charge transfer and Li dendrite formation occurring at electrolyte/electrode interfaces. Based on mechanistic analyses, this review will also briefly present corresponding strategies to enhance electrolyte/electrode interfaces through compositional modifications and structural designs. Overall, the comprehensive insights into electrolyte/electrode interfaces provided by this review can guide the future investigation of all-solid-state lithium batteries. Graphic Abstract