Nanoarchitectured Fe3O4 array electrode and its excellent lithium storage performance
Nanoarchitectured Fe3O4 array electrode and its excellent lithium storage performance
复制标题
纳米结构Fe3O4阵列电极及其优异的储锂性能
DOI：
10.1016/j.electacta.2012.06.053
复制
发表时间：
2012-09-01
影响因子：
6.6
通讯作者：
Sun, Shi-Gang
中科院分区：
文献类型：
--
作者：
Ke, Fu-Sheng;Huang, Ling;Sun, Shi-Gang
将Fe3O4纳米颗粒电化学沉积在Cu纳米带阵列上，作为锂离子电池的阳极。采用x射线衍射（XRD）、扫描电镜（SEM）和透射电镜（TEM）对Fe3O4阳极的三维（3D）纳米结构进行了表征。恒流循环试验表明，三维纳米结构Fe3O4阳极具有优异的性能。在280次循环（电流密度为385毫安g(-1), 0.42℃）后，测量到的可逆容量高达870毫安g(-1)，并且在8000毫安g(-1)（类似于9℃）的速率下，在231毫安g（-1）下也显示出优异的倍率能力。三维纳米结构Fe3O4电极的优异性能归因于其独特的结构，允许在阵列上进行一维电子传输，以及粒子间接触电阻的降低。(C) 2012 Elsevier Ltd.版权所有。
Fe3O4 nanoparticles were deposited electrochemically on an array of Cu nanoribbons and used as the anode for lithium ion batteries. The three-dimensional (3D) nanostructure of the Fe3O4 anode was characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Galvanostatic cycling tests revealed that the 3D nanostructured Fe3O4 anode exhibited a superior performance. Reversible capacity was measured as high as 870 mAh g(-1) after 280 cycles (at a current density of 385 mA g(-1), 0.42 C) and also shown an excellent rate capability that was determined at 231 mAh g(-1) under the rate of 8000 mA g(-1) (similar to 9 C). The superior performance of the 3D nanostructured Fe3O4 electrode has been attributed to its peculiar structure, which allows one-dimensional electron transport on the array, as well as to the decrease in interparticle contact resistance. (C) 2012 Elsevier Ltd. All rights reserved.