Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries
The modification of apolar carbon materials by heteroatom doping is an effective method that can effectively improve the surface polarity of carbon materials. In the main body of the lithium–sulfur battery cathode, the structural properties of the carbon material itself with porous structure and lar...
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MDPI AG
2022-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/16/5674 |
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| author | Zeyuan Shi Bo Gao Rui Cai Lei Wang Wentao Liu Zhuo Chen |
| author_facet | Zeyuan Shi Bo Gao Rui Cai Lei Wang Wentao Liu Zhuo Chen |
| author_sort | Zeyuan Shi |
| collection | DOAJ |
| description | The modification of apolar carbon materials by heteroatom doping is an effective method that can effectively improve the surface polarity of carbon materials. In the main body of the lithium–sulfur battery cathode, the structural properties of the carbon material itself with porous structure and large specific surface area provide sufficient space for sulfur accommodation and mitigate the bulk effect of the sulfur cathode (79%). The polarized surface of the reconstructed carbon material possesses strong adsorption effect on LiPs, which mitigates the notorious “shuttle effect.” In this paper, the surface structure of the Ketjen black cathode body was reconstructed by B and N double heteroatoms to polarize it. The modified polarized Ketjen black improves the adsorption and anchoring ability of LiPs during the reaction and accelerates their kinetic conversion, while its own uniformly distributed small mesopores and oversized BET structural properties are beneficial to mitigate the bulk effect of sulfur cathodes. Lithium–sulfur batteries using B and N modified cathodes have an initial discharge capacity of 1344.49 mAh/g at 0.1 C and excellent cycling stability at 0.5 C (381.4 mAh/g after 100 cycles). |
| first_indexed | 2024-03-09T04:10:00Z |
| format | Article |
| id | doaj.art-c8ad889a03704d18b9ec65924bf0bd80 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T04:10:00Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c8ad889a03704d18b9ec65924bf0bd802023-12-03T14:02:04ZengMDPI AGMaterials1996-19442022-08-011516567410.3390/ma15165674Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur BatteriesZeyuan Shi0Bo Gao1Rui Cai2Lei Wang3Wentao Liu4Zhuo Chen5Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Ministry of Education, Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral, Ministry of Education, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral, Ministry of Education, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaThe modification of apolar carbon materials by heteroatom doping is an effective method that can effectively improve the surface polarity of carbon materials. In the main body of the lithium–sulfur battery cathode, the structural properties of the carbon material itself with porous structure and large specific surface area provide sufficient space for sulfur accommodation and mitigate the bulk effect of the sulfur cathode (79%). The polarized surface of the reconstructed carbon material possesses strong adsorption effect on LiPs, which mitigates the notorious “shuttle effect.” In this paper, the surface structure of the Ketjen black cathode body was reconstructed by B and N double heteroatoms to polarize it. The modified polarized Ketjen black improves the adsorption and anchoring ability of LiPs during the reaction and accelerates their kinetic conversion, while its own uniformly distributed small mesopores and oversized BET structural properties are beneficial to mitigate the bulk effect of sulfur cathodes. Lithium–sulfur batteries using B and N modified cathodes have an initial discharge capacity of 1344.49 mAh/g at 0.1 C and excellent cycling stability at 0.5 C (381.4 mAh/g after 100 cycles).https://www.mdpi.com/1996-1944/15/16/5674lithium–sulfur batteriesheteroatomspolarizationsurface reconfiguration |
| spellingShingle | Zeyuan Shi Bo Gao Rui Cai Lei Wang Wentao Liu Zhuo Chen Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries Materials lithium–sulfur batteries heteroatoms polarization surface reconfiguration |
| title | Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries |
| title_full | Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries |
| title_fullStr | Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries |
| title_full_unstemmed | Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries |
| title_short | Double Heteroatom Reconfigured Polar Catalytic Surface Powers High-Performance Lithium–Sulfur Batteries |
| title_sort | double heteroatom reconfigured polar catalytic surface powers high performance lithium sulfur batteries |
| topic | lithium–sulfur batteries heteroatoms polarization surface reconfiguration |
| url | https://www.mdpi.com/1996-1944/15/16/5674 |
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