Solid electrolyte-electrode interface based on buffer therapy in solid-state lithium batteries

In the past few years, the all-solid lithium battery has attracted worldwide attentions, the ionic conductivity of some all-solid lithium-ion batteries has reached 10(-3)-10(-2) S/cm, indicating that the transport of lithium ions in solid electrolytes is no longer a major problem. However, some interface issues become research hotspots. Examples of these interfacial issues include the electrochemical decomposition reaction at the electrode-electrolyte interface; the low effective contact area between the solid electrolyte and the electrode etc. In order to solve the issues, researchers have pursued many different approaches. The addition of a buffer layer between the electrode and the solid electrolyte has been at the center of this endeavor. In this review paper, we provide a systematic summarization of the problems on the electrode-solid electrolyte interface and detailed reflection on the latest works of buffer-based therapies, and the review will end with a personal perspective on the improvement of buffer-based therapies.

Automated summary

The all-solid lithium battery has attracted global attention in recent years, with the transport of lithium ions in solid electrolytes no longer a major concern. However, interface issues such as electrochemical decomposition reactions and low effective contact areas have become research hotspots. Researchers have explored various approaches to address these issues, including the addition of a buffer layer between the electrode and the solid electrolyte.