Electrochemical performance of LiMn₂O₄ microcubes prepared by a self-templating route

LiMn₂O₄ microcubes with a size of 10-15 μm have been synthesized by a facile self-templating route starting from cubic MnCO ₃. The LiMn₂O₄ microcubes exhibit a hierarchical structure, where the cubes are stacked from parallel plates with a thickness of 200 nm, where each plate is composed of interconnected nanoparticles with a size of around 200 nm. The cubic LiMn₂O ₄ shows excellent rate capability and high-rate cycling stability. At 10 C, it can yield a discharge capacity of 108 mAh g^-1. A discharge capacity of 88 mAh g^-1 can be retained after 100 cycles at 10 C. The excellent electrochemical performance makes it a promising cathode for high-power Li-ion batteries.