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Conductivity and electronic conductivity of Li0.3(MgCoNiCuZn)0.7O- LiF high-entropy ceramics

YAZHOU KONG1,* , YOUFANG LIU1

Affiliation

  1. National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, P. R. China

Abstract

Li0.3(MgCoNiCuZn)0.7O-x% LiF (x=0, 5, 8, 10) composite ceramics are synthesized by solid state reaction. Influence of sintering aids of LiF on the crystal structure, microstructure and conductivity for Li0.3(MgCoNiCuZn)0.7O is investigated. The ratio of electronic conductivity to total conductivity for Li0.3(MgCoNiCuZn)0.7O is 4.3%. Electronic conductivity in Li0.3(MgCoNiCuZn)0.7O cannot be ignored. The total conductivity of composite ceramics is improved with the addition of LiF sintering aids. The highest total electrical conductivity of 7.12×10-5 S cm-1 was obtained at x=8 at room temperature, with the activation energy of 0.31 eV. The electronic conductivity of Li0.3(MgCoNiCuZn)0.7O-8% LiF sample is 5.22×10-7 S cm-1 , which is 100 times lower than its total electrical conductivity.

Keywords

High-entropy ceramic, Composite, Rock salt, Solid electrolyte.

Citation

YAZHOU KONG, YOUFANG LIU, Conductivity and electronic conductivity of Li0.3(MgCoNiCuZn)0.7O- LiF high-entropy ceramics, Optoelectronics and Advanced Materials - Rapid Communications, 16, 9-10, September-October 2022, pp.472-476 (2022).

Submitted at: March 18, 2022

Accepted at: Oct. 5, 2022