Protonation Stimulates the Layered to Rock Salt Phase Transition of Ni-Rich Sodium Cathodes

Protonation Stimulates the Layered to Rock Salt Phase Transition of Ni-Rich Sodium Cathodes

© 2023 Battelle Memorial Institute. Advanced Materials published by Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 13 vom: 09. März, Seite e2308380
1. Verfasser: Xiao, Biwei (VerfasserIn)
Weitere Verfasser: Zheng, Yu, Song, Miao, Liu, Xiang, Lee, Gi-Hyeok, Omenya, Fred, Yang, Xin, Engelhard, Mark H, Reed, David, Yang, Wanli, Amine, Khalil, Xu, Gui-Liang, Balbuena, Perla B, Li, Xiaolin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article layered cathode materials protonation rock‐salt phase sodium‐ion batteries
Beschreibung
Zusammenfassung:© 2023 Battelle Memorial Institute. Advanced Materials published by Wiley‐VCH GmbH.
Protonation of oxide cathodes triggers surface transition metal dissolution and accelerates the performance degradation of Li-ion batteries. While strategies are developed to improve cathode material surface stability, little is known about the effects of protonation on bulk phase transitions in these cathode materials or their sodium-ion battery counterparts. Here, using NaNiO2 in electrolytes with different proton-generating levels as model systems, a holistic picture of the effect of incorporated protons is presented. Protonation of lattice oxygens stimulate transition metal migration to the alkaline layer and accelerates layered-rock-salt phase transition, which leads to bulk structure disintegration and anisotropic surface reconstruction layers formation. A cathode that undergoes severe protonation reactions attains a porous architecture corresponding to its multifold performance fade. This work reveals that interactions between electrolyte and cathode that result in protonation can dominate the structural reversibility/stability of bulk cathodes, and the insight sheds light for the development of future batteries
Beschreibung:Date Revised 28.03.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202308380