Facile preparation of regular truncated octahedral LiMn2O4 cathode with high rate cyclability and stability for Li-ion batteries

Research Development on Spinel Lithium Manganese Oxides Cathode Materials for Lithium-Ion Batteries

“…The capacity retention was 90% and 83% after 1500 cycles at 10 C at room temperature and 60 ℃, respectively. He et al 27 used a simple, low-cost carbon template solgel method to prepare perfect single-crystal LMO with a regular truncated octahedral structure. The truncated ( 100) and (110) surfaces promoted the diffusion of Li + and improved the discharge capacity and rate performance.…”

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

“…Herein, a highly crystalline regular truncated octahedral spinel LiMn 2 O 4 cathode has been synthesized via a facile and low-cost carbon template sol–gel method in our previous work. 10 Then, truncated octahedral LiMn 2 O 4 was homogenously coated by an amorphous carbon layer via fast chemical vapor deposition (CVD) using acetylene gas (C 2 H 2 ) as the carbon source. Density functional theory (DFT) results disclosed that C 2 H 2 preferred to be absorbed on LiMn 2 O 4 surface to form an amorphous carbon layer after calcination, thus enhancing its cycling lifespan and rate performance.…”