Mitigating the Large‐Volume Phase Transition of P2‐Type Cathodes by Synergetic Effect of Multiple Ions for Improved Sodium‐Ion Batteries

• Published in: Advanced energy materials Vol. 12; no. 14
• Main Authors: Cheng, Zhiwei, Zhao, Bin, Guo, Yu‐Jie, Yu, Lianzheng, Yuan, Boheng, Hua, Weibo, Yin, Ya‐Xia, Xu, Sailong, Xiao, Bing, Han, Xiaogang, Wang, Peng‐Fei, Guo, Yu‐Guo
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.04.2022
• Subjects: Batteries; Cathodes; Density functional theory; electrochemistry; Electrode materials; Flux density; Lithium; Magnesium; Metal ions; P2–O2; Phase transitions; Sodium; Sodium-ion batteries; Titanium; Transition metal oxides

Layered transition metal oxide P2‐Na2/3Ni1/3Mn2/3O2 usually suffers from large‐volume phase transitions and different Na‐vacancy ordering during sodium (de)intercalation, incurring rapid capacity decline and poor rate capability. Herein, an effective strategy based on synergetic effect of selected m...