Lithium‐Ion Transport through a Tailored Disordered Phase on the LiNi0.5Mn1.5O4 Surface for High‐Power Cathode Materials

• DOI: 10.1002/cssc.201402109
• Publication Date: 2014-06-12T16:27:56Z
• Authors: Mi Ru Jo; Yong‐Il Kim; Yunok Kim; Ji Su Chae; Kwang Chul Roh; Won‐Sub Yoon; Yong‐Mook Kang
• Keywords: Diffusion; Manganese; Electric Power Supplies; Nickel; Surface Properties; Lithium Compounds; Oxides; Lithium; Electrodes; 01 natural sciences; 6. Clean water; 0104 chemical sciences

Abstract The phase control of spinel LiNi 0.5 Mn 1.5 O 4 was achieved through surface treatment that led to an enhancement its electrochemical properties. Li + diffusion inside could be promoted by modifying the structure phosphidation into a disordered ( Fd 3 m ) allows facile transport. Phosphidated showed significantly enhanced performance, even at high rates exceeding 10 C, demonstrating improved kinetics (related amount 3+ can render competitive as high‐power cathode material for electric vehicles and hybrid vehicles.