Hidden Cause of Lithium-Rich Cathode Materials’ Low Energy Efficiency Revealed
—Asymmetric Reaction Pathways Are Key—

A research team consisting of the National Institute for Materials Science (NIMS) and SoftBank Corp. has found that voltage hysteresis in Li2RuO3—a high-energy-density rechargeable battery cathode material—is caused by differences in the intermediate crystalline phases formed during charge and discharge processes.

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Marcela Calpa, Kei Kubota, Emiko Mizuki, Manai Ono, Shoichi Matsuda, Kazunori Takada, Energy Storage Materials 63, 103051 (2023). "Voltage hysteresis hidden in an asymmetric reaction pathway"
DOI : 10.1016/j.ensm.2023.103051