TY  - JOUR
T1  - Effect of Co Content on the Electrochemical Properties of (MgCoNiZnLi)O Based High Entropy Oxides for Li-Ion Batteries
AU  - Lokcu, Ersu
AU  - Ozden, Resat Can
AU  - Anık, Mustafa
PY  - 2020
DA  - December
JF  - The Eurasia Proceedings of Science Technology Engineering and Mathematics
JO  - EPSTEM
PB  - ISRES Publishing
WT  - DergiPark
SN  - 2602-3199
SP  - 29
EP  - 32
VL  - 11
LA  - en
AB  - High entropy oxides (HEOs) are attractive as a negative electrode material for lithium-ion batteries (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 Co5(MgNiZnLi)95O and Co35(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 (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.
KW  - Conversion type anode
KW  - Li-ion battery
KW  - High entropy oxide
CR  - Lökçü, E., Toparli, Ç., & Anik, M. (2020). Electrochemical performance of (MgCoNiZn)1-xLixO high-entropy oxides in lithium-ion batteries. ACS Applied Materials & Interfaces, 12, 23860-23866.
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CR  - Sarkar, A., Velasco, L., Wang, D., Wang, Q., Talasila, G., de Biasi, L., Kübel, C., Brezesinski, T., Bhattacharya, S. S., Hahn, H., & Breitung, B. (2018). High entropy oxides for reversible energy storage. Nature Communications, 9(3400), 1-9.
CR  - Qiu, N., Chen, H., Yang, Z., Sun, S., Wang, Y., & Cui, Y. (2019). A high entropy oxide (Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O) with superior lithium storage performance. Journal of Alloys and Compounds, 777, 767−774.
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UR  - https://dergipark.org.tr/en/pub/epstem/article/836280
L1  - https://dergipark.org.tr/en/download/article-file/1432486
ER  -