Microwave self-assembly of 3D graphene-carbon nanotube-nickel nanostructure for high capacity anode material in lithium ion battery
Microwave self-assembly of 3D graphene-carbon nanotube-nickel nanostructure for high capacity anode material in lithium ion battery
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DOI：
10.1016/j.carbon.2013.08.003
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发表时间：
2013-11-01
期刊：
影响因子：
10.9
通讯作者：
Oh, Il-Kwon
中科院分区：
文献类型：
--
作者：
Bae, Seok-Hu;Karthikeyan, Kaliyappan;Oh, Il-Kwon
我们报道了一种自组装的三维石墨烯-碳纳米管-镍(3DG-CNT-Ni)纳米结构的微波辅助合成，该纳米结构可用作锂离子电池(LIB)的高容量负极材料。独特的三维G-CNT-Ni纳米结构表明，碳纳米管是通过镍纳米粒子的尖端生长机制在石墨烯表面生长的。碳纳米管和石墨烯薄膜形成的三维网络纳米结构具有超高的比表面积、大量的活化位和高效的离子通道，这些都是制备高容量锂离子电池负极材料的关键。以648.2 mA/g的电流密度循环50次后，所合成的三维纳米结构的可逆比容量仍保持在100 mA h/g，可作为LiBS的高容量电极结构。(C)2013爱思唯尔有限公司。保留所有权利。
We report a microwave-assisted synthesis of a self-assembled three-dimensional graphene-carbon nanotube-nickel (3D G-CNT-Ni) nanostructure, which can be used as a high capacity anode material in lithium-ion batteries (LIBs). The unique 3D G-CNT-Ni nanostructure shows that CNTs are grown on graphene sheets through tip growth mechanism by Ni nano-particles. Bunches of CNTs and graphene sheets produce 3D network nanostructures with ultrahigh surface area, a large number of activation sites, and efficient ion pathways, all of which are crucial for high capacity anode materials in LIBs. The synthesized 3D nanostructure maintains a reversible specific capacity of 648.2 mA h/g after 50 cycles at a current density of 100 mA/g, as high capacity electrode structures in LIBs. (c) 2013 Elsevier Ltd. All rights reserved.