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Electrochemical Energy Storage
Utilizing High Spin Fe3+ in Spinel Structured Cathode Material for Safer High Energy Lithium-ion Batteries
Based on understanding the relationship between electronic structure of transition metal elements and the safety characteristics of cathode, a naturally abundant and environmentally-benign element—Fe is introduced into the LiNi0.5Mn1.5O4 spinel. The LiNi0.33Mn1.34Fe0.33O4 material shows significant improvement in safety characteristics by inhibiting oxygen release upon heating, while maintaining the high energy density of LiNi0.5Mn1.5O4.
“Utilizing High Spin Fe3+ in Spinel Structured Cathode Material for Safer High Energy Lithium-ion Batteries,” E. Hu, S.-M. Bak, Y. Liu, J. Liu, X. Yu, Y.-N. Zhou, J. Zhou, P. Khalifah, K. Ariyoshi, K.-W. Nam, X.-Q. Yang, Advanced Energy Materials, under review
