State Key Laboratory of Silicon Materials, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China. tujp
Nanoscale. 2013 Sep 7;5(17):7906-12. doi: 10.1039/c3nr02258g.
A Fe2O3@NiO core/shell nanorod array on carbon cloth was prepared with the aid of hydrothermal synthesis combined with subsequent chemical bath deposition. The resultant array structure is composed of Fe2O3 nanorods as the core and interconnected ultrathin NiO nanoflakes as the shell. As an anode material for lithium-ion batteries, the heterostructured array electrode delivers a high discharge capacity of 1047.2 mA h g(-1) after 50 cycles at 200 mA g(-1), and 783.3 mA h g(-1) at a high current density of 2000 mA g(-1). The excellent electrochemical performance is attributed to the unique 3D core/shell nanorod array architecture and a rational combination of two electrochemical active materials. Our growth approach offers a simple and effective technique for the design and synthesis of a transition metal oxide hierarchical array that is promising for high-performance electrochemical energy storage.
在水热合成的辅助下，通过后续的化学浴沉积，制备了一种在碳布上具有 Fe2O3@NiO 核/壳纳米棒阵列的材料。所得的阵列结构由作为核的 Fe2O3 纳米棒和相互连接的超薄 NiO 纳米片作为壳组成。作为锂离子电池的阳极材料，在 200 mA g(-1)的电流密度下经过 50 次循环后，异质结构阵列电极的放电容量高达 1047.2 mA h g(-1)，在 2000 mA g(-1)的高电流密度下的放电容量为 783.3 mA h g(-1)。优异的电化学性能归因于独特的 3D 核/壳纳米棒阵列结构和两种电化学活性材料的合理组合。我们的生长方法为设计和合成用于高性能电化学储能的过渡金属氧化物分级阵列提供了一种简单有效的技术。
