1. The carrier transition from Li atoms to Li vacancies in solid-state lithium alloy anodes
- Author
-
Qiang Zhang, Hong Yuan, Li-Peng Hou, Jia-Qi Huang, Rui Zhang, Chen-Zi Zhao, Xiang Chen, Yang Lu, and Zhongheng Fu
- Subjects
Multidisciplinary ,Materials science ,chemistry ,Alloy ,Inorganic chemistry ,Solid-state ,engineering ,chemistry.chemical_element ,Lithium ,engineering.material ,Metal precipitation ,Anode - Abstract
The stable cycling of energy-dense solid-state batteries is highly relied on the kinetically stable solid-state Li alloying reactions. The Li metal precipitation at solid-solid interfaces is the primary cause of interface fluctuations and battery failures, whose formation requires a clear mechanism interpretation, especially on the key kinetic short board. Here, we introduce the lithium alloy anode as a model system to quantify the Li kinetic evolution and transition from the alloying reaction to the metal deposition in solid-state batteries, identifying that there is a carrier transition from Li atoms to Li vacancies during lithiation processes. The rate-determining step is charge transfer or Li atom diffusion at different lithiation stages.
- Published
- 2021