An ion conductive polyimide encapsulation: New insight and significant performance enhancement of sodium based P2 layered cathodes
作者： Karthikeyan Kaliyappan , Gaoran Li , Lin Yang , Zhengyu Bai , Zhongwei Chen
DOI: 10.1016/J.ENSM.2019.07.010
关键词:
摘要: It is essential to stabilize the surface of P2 layered cathode materials at high cut-off voltages (> 4.3 V) in order to construct high-energy sodium ion batteries (SIB) that are promising for commercial application. When the voltage exceeds 4.3 V, large volume changes due to phase transitions and active species dissolution affect the structural stability of high voltage cathodes. In this study, we report a novel method of enhancing the electrochemical cycling performance of P2-type Na 2/3 (Mn 0.54 Ni 0.13 Co 0.13) O 2 (NNMC) materials through ion …
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