College of Chemistry and Molecular Sciences, Hubei Key Laboratory of Electrochemical Power Sources, Wuhan University , Wuhan, Hubei 430072, China.
ACS Appl Mater Interfaces. 2016 Sep 14;8(36):23706-12. doi: 10.1021/acsami.6b06880. Epub 2016 Sep 1.
Low cost and high performance Li-ion batteries have been extensively pursued for grid-scale energy storage applications; however, their development has been impeded for a long time due to the lack of qualified cathode materials with not only decent electrochemical performance but also resource abundance and low price. In this paper, we report Prussian-blue type FeFe(CN)6 nanocrystals with well-controlled lattice defects and perfect nanocubic morphology, which can exhibit a high Li-storage capacity of 160 mAh g(-1), a strong rate performance at 24 C, and a superior cycle stability with 90% capacity retention over 300 cycles. This low defect lattice and its excellent Li-insertion performance might provide a new insight into the design of advanced Li-ion battery materials and also a competitive alternative to the presently developed Li(+) insertion cathodes to develop low cost and high performance Li-ion batteries for grid-scale energy storage applications.
低成本、高性能的锂离子电池已经被广泛应用于电网规模的储能领域；然而，由于缺乏具有良好电化学性能、资源丰富且价格低廉的合格阴极材料，其发展长期受到阻碍。在本文中，我们报告了具有良好控制的晶格缺陷和完美纳米立方形态的普鲁士蓝型 FeFe(CN)6 纳米晶体，其具有 160 mAh g(-1) 的高储锂容量、24 C 的高倍率性能和优异的循环稳定性，在 300 次循环中保持 90%的容量。这种低缺陷晶格和优异的锂离子嵌入性能可能为先进锂离子电池材料的设计提供新的思路，同时也为开发低成本、高性能的锂离子电池提供了有竞争力的选择，以满足电网规模储能应用的需求。
