Enhanced high-temperature electrochemical properties of in situ carbon-coated truncated octahedral LiMn2O4 cathodes

Abstract

Truncated octahedral spinel LiMn₂O₄ was homogenously coated by amorphous carbon layer via chemical vapor deposition (CVD) using acetylene gas (C₂H₂) as carbon source to ease Mn dissolution to improve high-temperature performance, delivering a capacity retention of 92.9% after 1000 cycles at 5C at 50 °C.