Influence of metal-organic framework MOF-76(Gd) activation/carbonization on the cycle performance stability in Li-S battery

článek v časopise ve Web of Science, Jimp

angličtina

Carbon materials are widely used as sulphur support to improve the cycle performance, efficiency, electrode stability and high discharge capacity of lithium-sulphur batteries. Metal-organic frameworks with their unique structure can confine polysulphides and restrain the shuttle effect. Microporous metal-organic framework MOF-76(Gd) was synthesized and applied as a support for sulphur in lithium-sulphur batteries. To achieve better conductivity, MOF-76(Gd) was carbonized and applied as a conductive nest in the sulphur cathode. Activated (AC) and carbonized (C) MOF-76(Gd) in electrode material displayed sulphur encapsulation and polysulphide confinement which was proved by stable capacity during cycling. The carbonized MOF-76(Gd) in cathode ma-terial showed an initial discharge capacity of 658 mAh g(-1), and after 200 cycles at 0.5 ?C, the capacity retention was almost 93%.

Metal-organic framework; MOF-76(Gd); Lithium-sulphur batteries; Sulphur cathode; Cycling stability

CAPKOVÁ, D.; KAZDA, T.; ČECH, O.; KIRÁLY, N.; ZELENKA, T.; ČUDEK, P.; SHARMA, A.; HORNEBECQ, V.; ALMÁŠI, M.; STRAKOVÁ FEDORKOVÁ, A.

1. 7. 2022

ELSEVIER

AMSTERDAM

2352-152X

Journal of Energy Storage

51

1

Nizozemsko

104419-1

104419-15

15

https://www.sciencedirect.com/science/article/pii/S2352152X22004431?via%3Dihub