Lithium Nuclear Spin Polarization Lifetimes as Sensitive Reporters of Battery Electrolyte Degradation
Abstract
Identifying reliable, nondestructive indicators of electrolyte degradation is essential for advancing the diagnostics and lifetime assessment of lithium-ion batteries. In this study, we performed multinuclear nuclear magnetic resonance spectroscopy at various time points during systematic degradation of battery electrolyte components undergoing thermal cycling. We highlight a strong correlation between electrolyte degradation state and the 7Li nuclear spin polarization lifetime, while other nuclei did not respond as strongly. A mechanistic rationale for this phenomenon is provided using molecular dynamics simulations. The remarkable sensitivity of 7Li nuclear spin lifetime to electrolyte health underscores its potential value as a nondestructive, field-independent probe suited for diagnosing defects and evaluating the overall health of lithium-ion batteries.
Fields of Study & Subjects
Advancements in Battery Materials
Advanced Battery Materials and Technologies
Advanced Battery Technologies Research
Publication details
- Journal / source
- ACS Omega
- Publisher
- American Chemical Society (ACS)
- Volume
- 11
- Issue
- 20
- Pages
- 30208–30213
- Publication date
- 14 May 2026
- Language
- EN