Towards a comprehensive understanding through coupled theoretical-experimental analysis of dendrite nucleation and mitigation in current and next-generation Li-ion battery anodes
Abstract
ABSTRACT: Improved safety and understanding of failure in Li-ion batteries is a problem of crucial importance for many naval applications. We propose to investigate the nucleation and propagation of lithium deposits on current (graphite) and next-generation (Si, Li) anodes through a combination of first principles simulations, continuum-scale modeling and experimental testing. This analysis willprovide a clear landscape for the nucleation of lithium dendrites as a function of temperature, SEI components and C-rate (or current). This proposal aligns with the Operational Endurance Framework Priority, as highlighted in the latest Naval R&D Framework, addressing the objectives related to enabling resiliency, efficiency for sustained operations and improving platform-level energy storage and efficiency. The proposal addresses a major goal of the ElectrochemicalMaterials program in developing a fundamental understanding of catastrophic failure mechanisms in Li-ion batteries. It is likely that once dendrites have formed, the cell is essentially destined for early failure. The opportunities exist at preventing dendrite nucleation in the first place, and this project aims to develop a comprehensive understanding of lithium dendrite nucleation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 23, 2019
- Source ID
- N000141912172
Entities
People
- Venkatasubramanian Viswanathan
Organizations
- Massachusetts Institute of Technology
- Office of Naval Research
- United States Navy