Journal
CHEMICAL COMMUNICATIONS
Volume 58, Issue 73, Pages 10127-10135Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cc03970b
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Funding
- U.S. Department of Energy (DOE), Vehicle Technologies Office and Advanced Manufacturing Office [DE-AC02-06CH11357]
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Suppression of parasitic reactions between delithiated cathode materials and non-aqueous electrolytes is crucial for unleashing the high-energy-density potential of high voltage cathode materials. However, little is known about the chemical nature of these reactions, hindering the rational development of stable high voltage cathode/electrolyte pairs.
Parasitic reactions between delithiated cathode materials and non-aqueous electrolytes have been a major barrier that limits the upper cutoff potential of cathode materials. It is of great importance to suppress such parasitic reactions to unleash the high-energy-density potential of high voltage cathode materials. Although major effort has been made to identify the chemical composition of the cathode electrolyte interface using various cutting edge characterization tools, the chemical nature of parasitic reactions remains a puzzle. This severely hinders the rational development of stable high voltage cathode/electrolyte pairs for high-energy density lithium-ion batteries. This feature article highlights our latest effort in understanding the chemical/electrochemical role of the cathode electrolyte interface using protons as a chemical tracer for parasitic reactions.
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