Effect of surface coating of oxygen ion conductor on properties of Li2MnO3 cathode materiais.

Autor: ZHANG Long, LI Donglin, LIU Xiaoliu, LU Jicheng
Zdroj: Journal of Functional Materials / Gongneng Cailiao; 2023, Vol. 54 Issue 10, p10136-10142, 7p
Abstrakt: For the problem of discharge plateau voltage decay and capacity decay of Li2 MnO3 in lithium-rich manganese-based during cycling, the wet chemical method was used to modify it with oxygen ion conductor Zro.92Sr0.08O2. The results showed that the capacity retention of Ll2MnO3 cathode material coated with 1%Zro.92 Sr0.08O2 is 82.7% at 250 mA/g current density for 100 cycles, and greatly suppresses the decay of the discharge plateau voltage, while the capacity retention of the uncoated Li2MnO3 cathode material is 44.3% and its ds- charge plateau has disappeared. These results indicate that the oxygen ion conductor Zr0.92Sr0.08 O2 can effectively suppress the discharge plateau voltage decay and capacity decay of Li2 MnO3 cathode material during the charge and discharge process. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index