Single-crystalline LiMn2O4 nanoparticles by the gel combustion method assisted by microwave for high-performance lithium-ion battery

Low-cost and efficient electrode materials play a key role in improving the performance of lithium-ion battery. In this paper, the single-crystalline LiMn2O4 nanoparticles were synthesized through the gel combustion method assisted by microwave followed by calcination treatment. High-quality single-crystallinity characteristics of the LiMn2O4 precursor powder could be well retained after a high-temperature (990 & DEG;C) solid-state reaction. When valued as the working electrode materials for lithium-ion battery, they presented the exceptional electrochemical performances including the high specific capacity for an initial discharge of 120.53 mAh/g, the good rate capability with the retention of 65.52% at 5 C of the capacity at 0.2 C, and better cyclic performance with a capacity retention ratio of 90.01% after 300 cycles. The outstanding electrochemical performance of our prepared single-crystalline LiMn2O4 nanoparticles was perceived as the hopeful electrode materials for high-power lithium-ion battery.