Hollow Carbon-Nanotube/Carbon-Nanofiber Hybrid Anodes for Li-Ion Batteries
Hollow Carbon-Nanotube/Carbon-Nanofiber Hybrid Anodes for Li-Ion Batteries
复制标题
DOI：
10.1021/ja408421n
复制
发表时间：
2013-11-06
影响因子：
15
通讯作者：
Goodenough, John B.
中科院分区：
文献类型：
--
作者：
Chen, Yuming;Li, Xiaoyan;Goodenough, John B.
通过一种新型的原位化学气相沉积法，制备了具有超高比表面积（BET）和总孔容（CV）的活性氮掺杂中空碳纳米管/碳纳米管复合材料，其BET比表面积为1840 m2·g-1，总孔容为1.21 m3·g-1。作为阳极，该材料在0.1 A g（-1）（0.27 C）下在70次循环后具有类似于1150 mAh g（-1）的可逆容量。在8 A g（-1）（21.5 C）下，类似于320 mAh g（-1）的容量在3500次循环后衰减小于20%，这使其成为锂离子电池的上级阳极材料。
By a novel in situ chemical vapor deposition, activated N-doped hollow carbon-nanotube/carbon-nanofiber composites are prepared having a superhigh specific Brunauer-Emmett-Teller (BET) surface area of 1840 m(2) g(-1) and a total pore volume of 1.21 m(3) g(-1). As an anode, this material has a reversible capacity of similar to 1150 mAh g(-1) at 0.1 A g(-1) (0.27 C) after 70 cycles. At 8 A g(-1) (21.5 C), a capacity of similar to 320 mAh g(-1) fades less than 20% after 3500 cycles, which makes it a superior anode material for a Li-ion battery.