Bismuth Oxide: A New Lithium-Ion Battery Anode.
Bismuth Oxide: A New Lithium-Ion Battery Anode.
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DOI：
10.1039/c3ta12655b
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发表时间：
2013-10-21
期刊：
影响因子：
--
通讯作者：
Luo H
中科院分区：
文献类型：
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作者：
Li Y;Trujillo MA;Fu E;Patterson B;Fei L;Xu Y;Deng S;Smirnov S;Luo H
采用聚合物辅助溶液法在泡沫镍上制备了直接生长的氧化铋（p-Bi_2 O_3/Ni），并首次将其直接用作锂离子电池负极。Bi 2 O3颗粒被薄的碳层覆盖，在泡沫镍表面形成网状片。无粘结剂的p-Bi 2 O3/Ni显示出上级的电化学性能，在800 mA/g的电流密度下的容量为668 mAh/g，这远高于商业Bi 2 O3粉末（c-Bi 2 O3）和通过聚合物辅助溶液法制备的Bi 2 O3粉末（p-Bi 2 O3）。p-Bi_2 O_3/Ni的优良性能可归因于更高的体积利用率、更好的活性材料与集流体的连接以及更短的锂离子扩散路径。
Bismuth oxide directly grown on nickel foam (p-Bi2O3/Ni) was prepared by a facile polymer-assisted solution approach and was used directly as a lithium-ion battery anode for the first time. The Bi2O3 particles were covered with thin carbon layers, forming network-like sheets on the surface of the Ni foam. The binder-free p-Bi2O3/Ni shows superior electrochemical properties with a capacity of 668 mAh/g at a current density of 800 mA/g, which is much higher than that of commercial Bi2O3 powder (c-Bi2O3) and Bi2O3 powder prepared by the polymer-assisted solution method (p-Bi2O3). The good performance of p-Bi2O3/Ni can be attributed to higher volumetric utilization efficiency, better connection of active materials to the current collector, and shorter lithium ion diffusion path.