CoOOH-hierarchical porous carbon-sulfur as an excellent cathode for Li-S batteries

Xiao，Tingjiao1; Yang，Yumei1; Yang，Mingzhi1; Liu，Weiliang1; Li，Mei1; Ren，Manman1; Cai，Feipeng1; Wang，Yuanhao2

2022-11-25

10.1016/j.jallcom.2022.166334

JOURNAL OF ALLOYS AND COMPOUNDS   Impact Factor & Quartile

0925-8388

1873-4669

The “shuttle effect”, tardy reaction kinetics and volume change of sulfur cathode limit the wide application of Li-S batteries (LSBs). In this work, a composite of flower-like CoOOH decorating hierarchical porous carbon (CoOOH-HPC) was successfully synthesized and utilized as a sulfur host for LSBs. SEM and TEM images exhibited that the flower-like CoOOH formed by nanosheets was uniformly dispersed on the hierarchical porous carbon which was constructed by carbon spheres and nanotubes. Nitrogen adsorption/desorption isotherm and pore size distribution revealed that the ultrahigh specific surface area and suitable uniform mesopores of the CoOOH-HPC. Benefitting from the perfect combination of CoOOH and HPC, the CoOOH-HPC/S electrode delivered satisfactory electrochemical performance. It remained a discharge capacity of 550.9 mA h g after 270 cycles at 0.5 C, with a low capacity decay rate of 0.017 % per cycle and a stable coulombic efficiency (over 96 %). Besides, the CoOOH-HPC/S electrode with a high sulfur loading of 2.8 mg cm can demonstrate a discharge capacity of 357.91 mA h g after 500 cycles, with the capacity decay rate of 0.08 % per cycle. This work provided a new method for preparing a variety of metal-based compound decorative hierarchical porous carbon composites, which can be used in LSBs and other energy storage and conversion devices.

Cathode CoOOH Electrochemical catalyst Hierarchical porous carbon Lithium-sulfur batteries

SCI ; EI

English

Others

Natural Science Foundation of Shandong Province[ZR2018MEM012];

Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering

Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000841961400002

ELSEVIER SCIENCE SA

20223012415399

Carbon carbon composites ; Decay (organic) ; Electric discharges ; Electrochemical electrodes ; Gas adsorption ; Lithium batteries ; Lithium compounds ; Lithium sulfur batteries ; Pore size ; Porous materials ; Reaction kinetics

Structural Materials Other Than Metal, Plastics or Wood:415.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Primary Batteries:702.1.1 ; Secondary Batteries:702.1.2 ; Biochemistry:801.2 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85134731683

Scopus

1.School of Materials Science and Engineering,Energy Research Institute,Qilu University of Technology,Shandong Academy of Sciences,Jinan,250353,China
2.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Xiao，Tingjiao,Yang，Yumei,Yang，Mingzhi,et al. CoOOH-hierarchical porous carbon-sulfur as an excellent cathode for Li-S batteries[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,923.

Xiao，Tingjiao.,Yang，Yumei.,Yang，Mingzhi.,Liu，Weiliang.,Li，Mei.,...&Wang，Yuanhao.(2022).CoOOH-hierarchical porous carbon-sulfur as an excellent cathode for Li-S batteries.JOURNAL OF ALLOYS AND COMPOUNDS,923.

Xiao，Tingjiao,et al."CoOOH-hierarchical porous carbon-sulfur as an excellent cathode for Li-S batteries".JOURNAL OF ALLOYS AND COMPOUNDS 923(2022).