An experimental and first-principle investigation of the Ca-substitution effect on P3-type layered NaxCoO2.

Autor: Ishado, Yuji, Hasegawa, Hirona, Okada, Shigeto, Mizuhata, Minoru, Maki, Hideshi, Matsui, Masaki
Předmět:
Zdroj: Chemical Communications; 7/25/2020, Vol. 56 Issue 58, p8107-8110, 4p
Abstrakt: We experimentally and computationally investigated the Ca substitution effect on the electrochemical performance of P3-NaxCoO2. The cycle performance of Ca-substituted NaxCa0.04CoO2 was effectively improved due to its better crystallinity retention after charging. Our DFT calculations suggested that the presence of Ca2+ ions in Na sites kinetically mitigates phase transition. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index