title: Mildly reduced less defective graphene oxide/sulfur/carbon nanotube composite films for high-performance lithium-sulfur batteries.
abstract: The microstructures and properties of the carbonaceous matrices in the cathodes of lithium-sulfur (Li-S) batteries have strong effects on their performances. We prepared a ternary composite cathode of mildly reduced less defective graphene oxide (mrLGO), sulfur, and carbon nanotubes (CNTs) by filtration for Li-S batteries. This battery showed a high initial specific capacity of 1219 mA h g(-1) at 0.2 C and a stable specific capacity of around 1000 mA h g(-1) after 200 cycles with a coulombic efficiency of 99%. Its excellent performance is mainly attributed to the good conductivity and residual oxygen containing groups of mrLGO, and the three-dimensional (3D) framework constructed using mrLGO sheets and CNTs.
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Miao
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Yingru
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Ji
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Bowen
authors.initials: B
authors.lastname: Yao
authors.affiliation: Department of Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China. yum@ustb.edu.cn.
authors.forename: Mingpeng
authors.initials: M
authors.lastname: Yu
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China. gshi@tsinghua.edu.cn.
authors.forename: Gaoquan
authors.initials: G
authors.lastname: Shi