Insight into fast Li diffusion in Li-excess spinel lithium manganese oxide

Li-excess configuration can enhance Li diffusion by introducing two fast channels in spinel lithium manganese oxide.

The Influence of Particle Characteristic of Manganese Dioxide on Performance of Spinel Lithium Manganese Oxide

Several kinds of chemical manganese dioxide with different particle characteristic were prepared by redox reaction in liquid phase. Then, spinel lithium manganese oxide was synthesized by liquid impregnation. The result implied that the influence of particle characteristic on test result is important. The spinel lithium manganese oxide prepared by spherical MnO2 has better cycle performance than the spinel lithium manganese oxide prepared by MnO2 with irregular shape .The spinel lithium manganese oxide with little particle size has high initial specific capacity. The spinel lithium manganese oxide prepared by MnO2 with anemone shape has high specific capacity and stable cycle performance.