title: SnO2/WO3 core-shell nanorods and their high reversible capacity as lithium-ion battery anodes.
abstract: WO(3) nanorods are uniformly coated with SnO(2) nanoparticles via a facile wet-chemical route. The reversible capacity of SnO(2)/WO(3) core-shell nanorods is 845.9 mA h g(-1), higher than that of bare WO(3) nanorods, SnO(2) nanostructures, and traditional theoretical results. Such behavior can be attributed to a novel mechanism by which nanostructured metallic tungsten makes extra Li(2)O (from SnO(2)) reversibly convert to Li(+). This mechanism is confirmed by x-ray diffraction results. Our results open a way for enhancing the reversible capacity of alloy-type metal oxide anode materials.
authors: College of Sciences, Northeastern University, Shenyang, People's Republic of China. xuexinyu@mail.neu.edu.cn
authors: Xin-Yu
authors: XY
authors: Xue
authors: Bin
authors: B
authors: He
authors: Shuang
authors: S
authors: Yuan
authors: Li-Li
authors: LL
authors: Xing
authors: Zhao-Hui
authors: ZH
authors: Chen
authors: Chun-hua
authors: CH
authors: Ma