Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries
Improved conductivity and suppressed dissolution of lithium polysulfides is highly desirable for high-performance lithium-sulfur (Li-S) batteries. Herein, by a facile solvent method followed by nitridation with NH3 , a 2D nitrogen-doped carbon structure is designed with homogeneously embedded Co4 N...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/147377 |
| _version_ | 1811677053040197632 |
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| author | Xiao, Kuikui Wang, Jin Chen, Zhen Qian, Yuhong Liu, Zheng Zhang, Lili Chen, Xiaohua Liu, Jilei Fan, Xiaofeng Shen, Ze Xiang |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Xiao, Kuikui Wang, Jin Chen, Zhen Qian, Yuhong Liu, Zheng Zhang, Lili Chen, Xiaohua Liu, Jilei Fan, Xiaofeng Shen, Ze Xiang |
| author_sort | Xiao, Kuikui |
| collection | NTU |
| description | Improved conductivity and suppressed dissolution of lithium polysulfides is highly desirable for high-performance lithium-sulfur (Li-S) batteries. Herein, by a facile solvent method followed by nitridation with NH3 , a 2D nitrogen-doped carbon structure is designed with homogeneously embedded Co4 N nanoparticles derived from metal organic framework (MOF), grown on the carbon cloth (MOF-Co4 N). Experimental results and theoretical simulations reveal that Co4 N nanoparticles act as strong chemical adsorption hosts and catalysts that not only improve the cycling performance of Li-S batteries via chemical bonding to trap polysulfides but also improve the rate performance through accelerating the conversion reactions by decreasing the polarization of the electrode. In addition, the high conductive nitrogen-doped carbon matrix ensures fast charge transfer, while the 2D structure offers increased pathways to facilitate ion diffusion. Under the current density of 0.1C, 0.5C, and 3C, MOF-Co4 N delivers reversible specific capacities of 1425, 1049, and 729 mAh g-1 , respectively, and retains 82.5% capacity after 400 cycles at 1C, as compared to the sample without Co4 N (MOF-C) values of 61.3% (200 cycles). The improved cell performance corroborates the validity of the multifunctional design of MOF-Co4 N, which is expected to be a potentially promising cathode host for Li-S batteries. |
| first_indexed | 2024-10-01T02:31:15Z |
| format | Journal Article |
| id | ntu-10356/147377 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:31:15Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1473772021-03-30T06:24:46Z Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries Xiao, Kuikui Wang, Jin Chen, Zhen Qian, Yuhong Liu, Zheng Zhang, Lili Chen, Xiaohua Liu, Jilei Fan, Xiaofeng Shen, Ze Xiang School of Physical and Mathematical Sciences Science::Physics Catalysts Chemical Adsorption Improved conductivity and suppressed dissolution of lithium polysulfides is highly desirable for high-performance lithium-sulfur (Li-S) batteries. Herein, by a facile solvent method followed by nitridation with NH3 , a 2D nitrogen-doped carbon structure is designed with homogeneously embedded Co4 N nanoparticles derived from metal organic framework (MOF), grown on the carbon cloth (MOF-Co4 N). Experimental results and theoretical simulations reveal that Co4 N nanoparticles act as strong chemical adsorption hosts and catalysts that not only improve the cycling performance of Li-S batteries via chemical bonding to trap polysulfides but also improve the rate performance through accelerating the conversion reactions by decreasing the polarization of the electrode. In addition, the high conductive nitrogen-doped carbon matrix ensures fast charge transfer, while the 2D structure offers increased pathways to facilitate ion diffusion. Under the current density of 0.1C, 0.5C, and 3C, MOF-Co4 N delivers reversible specific capacities of 1425, 1049, and 729 mAh g-1 , respectively, and retains 82.5% capacity after 400 cycles at 1C, as compared to the sample without Co4 N (MOF-C) values of 61.3% (200 cycles). The improved cell performance corroborates the validity of the multifunctional design of MOF-Co4 N, which is expected to be a potentially promising cathode host for Li-S batteries. Ministry of Education (MOE) X.H.C. acknowledges the financial support from the National Natural Science Foundation of China (51572078, 51772086, and 51872087) and the Scientific Research Fund of Hunan Province (2015JJ2033). J.L.L. thanks the financial support from Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 51802091), and National Thousand Young Talents Program and the Fundamental Research Funds for the Central Universities (Grant No. 531109200024). Z.X.S. acknowledges the financial support from Ministry of Education, Singapore, AcRF Tier 1 (Reference No. RG103/16) and AcRF Tier 3 (MOE2011-T3-1-005). The authors also acknowledge Prof. Yizhong Huang and Mr. Xun Cao for the help of the TEM test. 2021-03-30T06:24:46Z 2021-03-30T06:24:46Z 2019 Journal Article Xiao, K., Wang, J., Chen, Z., Qian, Y., Liu, Z., Zhang, L., Chen, X., Liu, J., Fan, X. & Shen, Z. X. (2019). Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries. Small, 15(25), 1901454--. https://dx.doi.org/10.1002/smll.201901454 1613-6810 0000-0001-7432-7936 https://hdl.handle.net/10356/147377 10.1002/smll.201901454 31069934 2-s2.0-85065664124 25 15 1901454- en RG103/16 MOE2011-T3-1-005 Small © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Science::Physics Catalysts Chemical Adsorption Xiao, Kuikui Wang, Jin Chen, Zhen Qian, Yuhong Liu, Zheng Zhang, Lili Chen, Xiaohua Liu, Jilei Fan, Xiaofeng Shen, Ze Xiang Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title | Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title_full | Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title_fullStr | Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title_full_unstemmed | Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title_short | Improving polysulfides adsorption and redox kinetics by the Co4N nanoparticle/N-Doped carbon composites for lithium-sulfur batteries |
| title_sort | improving polysulfides adsorption and redox kinetics by the co4n nanoparticle n doped carbon composites for lithium sulfur batteries |
| topic | Science::Physics Catalysts Chemical Adsorption |
| url | https://hdl.handle.net/10356/147377 |
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