Synthesis of Two-Dimensional Transition-Metal Phosphates with Highly Ordered Mesoporous Structures for Lithium-Ion Battery Applications
作者:Dan Yang、Ziyang Lu、Xianhong Rui、Xiao Huang、Hai Li、Jixin Zhu、Wenyu Zhang、Yeng Ming Lam、Huey Hoon Hng、Hua Zhang、Qingyu Yan
DOI:10.1002/anie.201404615
日期:2014.8.25
Materials with ordered mesoporous structures have shown great potential in a wide range of applications. In particular, the combination of mesoporosity, low dimensionality, and well‐defined morphology in nanostructures may exhibit even more attractive features. However, the synthesis of such structures is still challenging in polar solvents. Herein, we report the preparation of ultrathin two‐dimensional
具有有序介孔结构的材料在广泛的应用中显示出巨大的潜力。特别是,介孔性,低维数和明确定义的纳米结构形态的结合可能会展现出更具吸引力的特征。然而,在极性溶剂中,此类结构的合成仍然具有挑战性。在此,我们报告了过渡金属磷酸盐超薄二维(2D)纳米片的制备,包括FePO 4,Mn 3(PO 4)2和Co 3(PO 4)2在非极性溶剂中具有高度有序的介孔结构。所获得的纳米薄片厚度约为3.7 nm,是由单层平行堆积的孔道构成的。这些独特有序的介孔2D纳米结构可能源自非极性溶剂中两亲前体形成的圆柱胶束的2D组装。二维介孔FePO 4纳米薄片用作锂离子电池的阴极,它具有出色的稳定性和高倍率性能。