微型多孔材料
材料科学
碳纳米管
碳纤维
化学工程
阴极
溶解
煅烧
硫黄
锂硫电池
纳米技术
电池(电)
纳米复合材料
电化学
复合材料
复合数
化学
电极
有机化学
催化作用
冶金
物理化学
工程类
功率(物理)
物理
量子力学
作者
Binting Dai,Yuxi Liu,Hongsen Zhang,S. Wang,Yali Wang,Zhanshuang Jin,Jiudi Zhang,Jianhua Guo,Junjie Li,Bing Han
出处
期刊:Langmuir
[American Chemical Society]
日期:2023-06-16
卷期号:39 (26): 9094-9099
被引量:3
标识
DOI:10.1021/acs.langmuir.3c00811
摘要
Lithium-sulfur (Li-S) batteries are known as a prospective new generation of battery systems owing to their high energy density, low cost, non-toxicity, and environmental friendliness. Nevertheless, several issues remain in the practical application of Li-S batteries, such as low sulfur usage, poor rate performance, and poor cycle stability. Ordered microporous carbon materials and carbon nanotubes (CNTs) can effectively limit the diffusion of polysulfides (LiPSs) and have high electrical conductivity, respectively. Here, inspired by the evaporation of zinc at high temperatures, we constructed CNTs interpenetrating ordered microporous carbon nanospheres (CNTs/OMC NSs) by high-temperature calcination and used them as a sulfur host material. With the benefit from the excellent electrical conductivity of CNTs and OMC achieving uniform sulfur dispersion and effectively limiting LiPS dissolution, the S@CNTs/OMC NS cathodes show outstanding cycling stability (initial discharge capacity of 879 mAh g-1 at 0.5 C, maintained at 629 mAh g-1 for 500 cycles) and excellent rate performance (521 mAh g-1 at 5.0 C). Furthermore, the current study can serve as a significant reference for the synthesis of CNTs that interpenetrate various materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI