Navigating the safe operation of high-voltage cathodes: Challenges and strategies

Lithium-ion batteries play a crucial role in storing energy for renewable sources and electric vehicles, yet face challenges related to insufficient energy density. Elevating the working-voltage of cathodes is promising to boost the energy density of batteries by increasing both the output voltage a...

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Bibliographic Details
Published in:Nano research 2024-10, Vol.17 (10), p.8694-8705
Main Authors: Sun, Yue, Zuo, Changjian, Lu, Yi-Chun
Format: Article
Language:English
Subjects:
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Cathodes
Chemistry and Materials Science
Condensed Matter Physics
Decomposition
Decomposition reactions
Electric vehicles
Electrolytes
Electrons
Energy storage
Heat
Interfaces
Lithium
Lithium-ion batteries
Materials Science
Nanotechnology
Oxidation
Phase transitions
Renewable energy sources
Review Article
Temperature
Thermal runaway
Voltage
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Summary:Lithium-ion batteries play a crucial role in storing energy for renewable sources and electric vehicles, yet face challenges related to insufficient energy density. Elevating the working-voltage of cathodes is promising to boost the energy density of batteries by increasing both the output voltage and capacity of cathode, which however could compromise life cycle and safety. This review provides a comprehensive summary of essential factors governing pathways of cathode-induced thermal runaway, including electrolyte decomposition, phase transitions, and crosstalk-induced reactions. Electrode and electrolyte modifications aimed at mitigating parasitic reactions and preventing crosstalk were also discussed. The review concludes with insights into the future application of these strategies, providing a comprehensive perspective on the realization of high-energy and safe batteries.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-024-6852-6