title: Wet Chemistry Synthesis of Multidimensional Nanocarbon-Sulfur Hybrid Materials with Ultrahigh Sulfur Loading for Lithium-Sulfur Batteries.
abstract: 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 nanocarbons, as follows: zero-dimensional carbon nanoparticle, one-dimensional carbon nanotube, and two-dimensional graphene. This 3D nanocarbon-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.
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.|University of Chinese Academy of Sciences , Beijing 100049, P.R. China.
authors.forename: Wen-Cheng
authors.initials: WC
authors.lastname: Du
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.
authors.forename: Ya-Xia
authors.initials: YX
authors.lastname: Yin
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.
authors.forename: Xian-Xiang
authors.initials: XX
authors.lastname: Zeng
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.
authors.forename: Ji-Lei
authors.initials: JL
authors.lastname: Shi
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.
authors.forename: Shuai-Feng
authors.initials: SF
authors.lastname: Zhang
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.|University of Chinese Academy of Sciences , Beijing 100049, P.R. China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wan
authors.affiliation: CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, P.R. China.|University of Chinese Academy of Sciences , Beijing 100049, P.R. China.
authors.forename: Yu-Guo
authors.initials: YG
authors.lastname: Guo
keywords: 3D conducting networks; lithium−sulfur batteries; multidimensional nanocarbons; soluble chemistry; sulfur cathode