Effect of Co Content on the Electrochemical Properties of (MgCoNiZnLi)O Based High Entropy Oxides for Li-Ion Batteries

Authors : Ersu LOKCU, Resat Can OZDEN, Mustafa ANIK

Pages : 29-32

View : 21 | Download : 8

Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :High entropy oxides insert ignore into journalissuearticles values(HEOs); are attractive as a negative electrode material for lithium-ion batteries insert ignore into journalissuearticles values(LIBs);, because of the high specific capacities and cycling stabilities. Moreover, they offer a wide range of compositional variation to reach the desired electrochemical performances. In this study, we synthesized the Co5insert ignore into journalissuearticles values(MgNiZnLi);95O and Co35insert ignore into journalissuearticles values(MgNiZnLi);65O high entropy oxides using conventional solid state reaction technique and examined their electrochemical properties in lithium-ion cells as anode material. The structural properties of as-synthesized high entropy oxides were investigated using X-ray diffraction insert ignore into journalissuearticles values(XRD); technique, which showed that all the oxides have single-phase rock-salt structure. The increase in the Co content from 5% to 35%, the high entropy oxide based anodes resulted in improved discharge capacity due to the different oxidation states in Co ions. This work indicates that the compositional and elemental valences are very crucial to design and achieve novel high performance high entropy oxide based anode materials for lithium-ion batteries.
Keywords : Conversion type anode, Li ion battery, High entropy oxide