Crystal Orientation Tuning of LiFePO4 Nanoplates for High Rate Lithium Battery Cathode Materials

We report the crystal orientation tuning of LiFePO4 nanoplates for high rate lithium battery cathode, materials. Olivine LiFePO4 nanoplates can easily prepared by glycol-based solvothermal process, and the largest crystallographic facet of the LiFePO4 nanoplates, as well as so-Caused electrochemical performances, can be tuned by the mixing procedure of starting. materials. LiFePO4 nanoplates with crystal orientation along the ac facet and bc facet present similar reversible capacities of around 160 mAh g(-1) at 0.1, 0.5, and 1 C-rates but quite different Ones at high C-rates. The former delivers 156 rnAh g(-1) and 148 mAh g(-1) at 5 C-rate and 10 C-rate, respectively, while the latter delivers 132 rnAh g(-1) and only 28 rnAh g(-1) at 5 C-rate, and 10 C-rate, respectively, demonstrating that the crystal orientation plays important role, for the performance of LiFePO4 nanoplates. This, pins a facile way to prepare high performance LiFePO4 nanoplate cathode material for lithium ion batteries.