Oxygen Release Degradation in Li‐Ion Battery Cathode Materials: Mechanisms and Mitigating Approaches
By Soroosh Sharifi‐Asl, Jun Lu, K. Amine, R. Shahbazian‐Yassar. Advanced Energy Materials, 2019
421 citations recorded by the source corpus.
Widespread application of Li‐ion batteries (LIBs) in large‐scale transportation and grid storage systems requires highly stable and safe performance of the batteries in prolonged and diverse service conditions. Oxygen release from oxygen‐containing positive electrode materials is one of the major structural degradations resulting in rapid capacity/voltage fading of the battery and triggering the parasitic thermal runaway events. Herein, the authors summarize the recent progress in understanding the mechanisms of the oxygen release phenomena and correlative structural degradations observed in four major groups of cathode materials: layered, spinel, olivine, and Li‐rich cathodes. In addition, the engineering and materials design approaches that improve the structural integrity of the cathode materials and minimize the detrimental O2 evolution reaction are summarized. The authors believe that this review can guide researchers on developing mitigation strategies for the design of next‐generation oxygen‐containing cathode materials where the oxygen release is no longer a major degradation issue.
Subfields: Automotive Engineering, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/817154f5606e53c22d6d89a34ad3d0cb0ddaee70
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Citations in the corpus
- 2021 roadmap for sodium-ion batteries (2021, background): “Typically, these coatings react with the cathode material to stabilise the surface by creating a composite of the active material and the coating compounds [26].”
- Unlocking the self-supported thermal runaway of high-energy lithium-ion batteries (2021, positive): “However, at highly delithiated states or over-charging, the high-valent transition metal (e.g., Ni 4+ , Co 4+ ) of charged cathode suffers from chemical instability during heating that behaves as oxygen outgasing 6, 7 , resulting in severe safety problems 8-11 .”