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Nano Research 2020, 13(12): 3315-3320 https://doi.org/10.1007/s12274-020-3009-0
Research Article | Issue | Published: 02 September 2020

Defect engineering on carbon black for accelerated Li-S chemistry

Show Author's Information Wenlong Cai1,  Yingze Song2( ),  Yuting Fang1,  Weiwei Wang1,  Songlin Yu2,  Huaisheng Ao1,  Yongchun Zhu1( ),  Yitai Qian1
Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Keywords:
defect engineering, Li-S chemistry, carbon black, sulfur reaction kinetics
Topics:
Carbon blackDefectsElectrocatalystsLithium batteriesLithium compoundsLithium sulfur batteriesPhosphorus compoundsRedox reactionsSulfur compounds
Cite this article:
Cai W, Song Y, Fang Y, et al. Defect engineering on carbon black for accelerated Li-S chemistry. Nano Research, 2020, 13(12): 3315-3320. https://doi.org/10.1007/s12274-020-3009-0
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Abstract Full text Electronic supplementary material About this article

Rationally designing sulfur hosts with the functions of confining lithium polysulfides (LiPSs) and promoting sulfur reaction kinetics is critically important to the real implementation of lithium-sulfur (Li-S) batteries. Herein, the defect-rich carbon black (CB) as sulfur host was successfully constructed through a rationally regulated defect engineering. Thus-obtained defect-rich CB can act as an active electrocatalyst to enable the sulfur redox reaction kinetics, which could be regarded as effective inhibitor to alleviate the LiPS shuttle. As expected, the cathode consisting of sulfur and defect-rich CB presents a high rate capacity of 783.8 mA·h·g-1 at 4 C and a low capacity decay of only 0.07% per cycle at 2 C over 500 cycles, showing favorable electrochemical performances. The strategy in this investigation paves a promising way to the design of active electrocatalysts for realizing commercially viable Li-S batteries.


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Electronic supplementary material
About this article

Defect engineering on carbon black for accelerated Li-S chemistry

Show Author's information Wenlong Cai1, Yingze Song2( ), Yuting Fang1, Weiwei Wang1, Songlin Yu2, Huaisheng Ao1, Yongchun Zhu1( ), Yitai Qian1
Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
State Key Laboratory of Environment-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China

Abstract

Rationally designing sulfur hosts with the functions of confining lithium polysulfides (LiPSs) and promoting sulfur reaction kinetics is critically important to the real implementation of lithium-sulfur (Li-S) batteries. Herein, the defect-rich carbon black (CB) as sulfur host was successfully constructed through a rationally regulated defect engineering. Thus-obtained defect-rich CB can act as an active electrocatalyst to enable the sulfur redox reaction kinetics, which could be regarded as effective inhibitor to alleviate the LiPS shuttle. As expected, the cathode consisting of sulfur and defect-rich CB presents a high rate capacity of 783.8 mA·h·g-1 at 4 C and a low capacity decay of only 0.07% per cycle at 2 C over 500 cycles, showing favorable electrochemical performances. The strategy in this investigation paves a promising way to the design of active electrocatalysts for realizing commercially viable Li-S batteries.

Keywords: defect engineering, Li-S chemistry, carbon black, sulfur reaction kinetics

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Publication history
Copyright
Acknowledgements

Publication history

Received: 09 May 2020
Revised: 23 July 2020
Accepted: 26 July 2020
Published: 02 September 2020
Issue date: December 2020

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature

Acknowledgements

This work was financially supported by the National Key Research and Development Program of China (No. 2017YFA0206703), the National Natural Science Foundation of China (No. 21671183), and the Project of State Key Laboratory of Environment-Friendly Energy Materials (SWUST, Nos. 19FKSY16 and 18ZD320304).

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