Suppression of O2 evolution from oxide cathode for lithium-ion batteries: VO(x)-impregnated 0.5Li2MnO3-0.5LiNi(0.4)Co(0.2)Mn(0.4)O2 cathode.
A VO(x)-impregnated oxide cathode for lithium ion batteries exhibits a substantial drop in oxygen evolution during high voltage operation. An electrolyte was found to catalyze the gas evolution, and the VO(x) layer could protect the cathode oxide surface from the electrolyte and stabilize the surface oxide ions during their electrochemical oxidation.
Park
Kyu-Sung
KS
Battery Group, Samsung Advanced Institute of Technology (SAIT), Yongin 446-712, Korea. ks337.park@samsung.com
Benayad
Anass
A
Park
Min-Sik
MS
Choi
Wonchang
W
Im
Dongmin
D