Fundamental Understanding of Dynamic Interfacial Phenomena in Solid State Batteries
- General Motors R&D, Warren, MI (United States); General Motors LLC
Solid-state batteries (SSBs) are considered as one of the most promising battery technologies for resolving the intrinsic limitations of current lithium-ion batteries, such as safety and insufficient energy density. However, the degradation associated with interfaces in SSBs is still a critical issue leading to short cycle life. To get fundamental understanding of the failure mechanism of the interfaces, we first developed a comprehensive set of in situ diagnostic techniques combined with atomic/continuum modeling schemes to investigate and understand the coupled mechanical/chemical degradation associated with dynamic interfacial phenomena in SSBs. Specifically, we focused on in situ observations and characterizations of lithium plating-stripping processes, lithium dendrite formation, interphase formation, and the induced interfacial stresses, as well as the mechanical and electrochemical properties of interfaces and interphases. The final project report first gives an overview of the project background, objectives, technical approaches, and final deliverables for all the budget periods; then follows with a summary on main accomplishments based on main tasks. We particularly would like to highlight some capabilities developed from this project which can also be implemented to our advanced battery development.
- Research Organization:
- General Motors R&D, Warren, MI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
- Contributing Organization:
- Brown University; University of Kentucky
- DOE Contract Number:
- EE0008863
- OSTI ID:
- 1997427
- Report Number(s):
- DOE-GM--0008863-01
- Country of Publication:
- United States
- Language:
- English
Similar Records
In Situ STEM-EELS observation of nanoscale interfacial phenomena in all-solid-state batteries
Journal Article
·
Mon May 02 20:00:00 EDT 2016
· Nano Letters
·
OSTI ID:1257962