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题名: Wet Chemistry Synthesis of Multidimensional Nanocarbon-Sulfur Hybrid Materials with Ultrahigh Sulfur Loading for Lithium-Sulfur Batteries
作者: Du, Wen-Cheng1, 2, 3; Yin, Ya-Xia1, 2; Zeng, Xian-Xiang1, 2; Shi, Ji-Lei1, 2; Zhang, Shuai-Feng1, 2; Wan, Li-Jun1, 2, 3; Guo, Yu-Guo1, 2, 3
关键词: multidimensional nanocarbons ; soluble chemistry ; 3D conducting networks ; sulfur cathode ; lithium-sulfur batteries
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2016-02-17
卷: 8, 期:6, 页:3584-3590
收录类别: SCI
英文摘要: An optimized nanocarbon-sulfur cathode material with ultrahigh sulfur loading of up to 90 wt % is realized in the form of sulfur nanolayer-coated three-dimensional (3D) conducting network. This 3D nanocarbon-sulfur network combines three different nano carbons, as follows: zero dimensional carbon nanoparticle, one-dimensional carbon nanotube, and two-dimensional graphene. This 3D nano carbon-sulfur network is synthesized by using a method based on soluble chemistry of elemental sulfur and three types of nanocarbons in well-chosen solvents. The resultant sulfur-carbon material shows a high specific capacity of 1115 mA h g(-1) at 0.02C and good rate performance of 551 mA h g(-1) at 1C based on the mass of sulfur-carbon composite. Good battery performance can be attributed to the homogeneous compositing of sulfur with the 3D hierarchical hybrid nanocarbon networks at nanometer scale, which provides efficient multidimensional transport pathways for electrons and ions. Wet chemical method developed here provides an easy and cost-effective way to prepare sulfur-carbon cathode materials with high sulfur loading for application in high-energy Li-S batteries.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35839
Appears in Collections:分子纳米结构与纳米技术实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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