Understanding Voltage Decay and Hysteresis in Li‐Rich Layered Oxide Cathodes DOI
Hongfei Zheng, Liguang Wang, Jun Lü

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

Abstract Li‐rich layered oxide cathodes (LLOs) with anionic redox are promising to boost the energy density of lithium batteries beyond 500 Wh kg −1 . However, their commercialization has long been hampered by inherent drawbacks, particularly voltage decay and hysteresis, which reduce efficiency, shorten battery life, challenge management. To address these issues, a prerequisite is establishing comprehensive understanding voltage‐related phenomena correlated reactions (ARR), remains elusive despite extensive research. Therefore, in this review, proposed mechanisms systematically summarized fundamental origins hysteresis identified, together elucidating relationship ARR. Voltage mainly attributed irreversible TM migration phase transition, whose driving force involves factors like lattice strain accumulation oxygen loss. A relatively unified theory, asymmetric non‐equilibrium reaction path during ARR, identified as origin hysteresis. This includes sequential electrochemical chemical processes (sluggish electronic atomic structural rearrangements, such ligand‐to‐metal charge transfer). Recent achievements effective solutions for issues also elaborated. After deeply inspiring insights mitigation strategies forward‐looking remarks provided.

Language: Английский

A comprehensive understanding on the anionic redox chemistry of high-voltage cathode materials for high-energy-density lithium-ion batteries DOI
Qingyuan Li, Dong Zhou, Mihai Chu

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review systematically discusses the structure, reaction mechanisms, and challenges as well countermeasures for high-voltage Li-rich, LiCoO 2 , Ni-rich cathode materials, attributing their anion redox activity to O 2p non-bonding states.

Language: Английский

Citations

1
Understanding Voltage Decay and Hysteresis in Li‐Rich Layered Oxide Cathodes DOI
Hongfei Zheng, Liguang Wang, Jun Lü

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 24, 2025

Abstract Li‐rich layered oxide cathodes (LLOs) with anionic redox are promising to boost the energy density of lithium batteries beyond 500 Wh kg −1 . However, their commercialization has long been hampered by inherent drawbacks, particularly voltage decay and hysteresis, which reduce efficiency, shorten battery life, challenge management. To address these issues, a prerequisite is establishing comprehensive understanding voltage‐related phenomena correlated reactions (ARR), remains elusive despite extensive research. Therefore, in this review, proposed mechanisms systematically summarized fundamental origins hysteresis identified, together elucidating relationship ARR. Voltage mainly attributed irreversible TM migration phase transition, whose driving force involves factors like lattice strain accumulation oxygen loss. A relatively unified theory, asymmetric non‐equilibrium reaction path during ARR, identified as origin hysteresis. This includes sequential electrochemical chemical processes (sluggish electronic atomic structural rearrangements, such ligand‐to‐metal charge transfer). Recent achievements effective solutions for issues also elaborated. After deeply inspiring insights mitigation strategies forward‐looking remarks provided.

Language: Английский

Citations

0