|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XVII
||High-entropy Oxides Li(Ni0.2Mn0.2Co0.2Zn0.2Cu0.2)O2 as Cathode Materials for Lithium-ion Batteries
||Po-wei Huang, Ralph Nicolai Nasara, Shih-kang Lin
|On-Site Speaker (Planned)
Lithium-ion battery (LIB) is one of the most promising energy storage devices; however, its performance and ranges of application are still limited by the lack of cathode materials with satisfactory stability (safety), power density, and energy density. Among all the cathode materials, layered oxides offer the highest capacity but suffer from irreversible capacity fading after charge-discharge cycling. Enhancing phase stability of layered oxide cathode materials during charging and discharging is an emerging issue for next-generation LIBs. In this study, we introduce the concept of high-entropy effects into the layered oxide system, and examine the high-entropy effects that was previously observed and discussed only in alloy systems. A single phase high-entropy layered oxide Li(Ni0.2Mn0.2Co0.2Zn0.2Cu0.2)O2 is successfully synthesized using solid-state method. Material characterizations as well as electrochemical testing using CR2032 coin-type cells under a constant rate of 0.05C are performed.
||Planned: Supplemental Proceedings volume