Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries
A three-dimensional hierarchical sandwich-type graphene sheet-sulfur/carbon (GSS/CZIF8-D) composite for use in a cathode for a lithium sulfur (Li-S) battery has been prepared by an ultrasonic method. The microporous carbon host was prepared by a one-step pyrolysis of Zeolitic Imidazolate Framework-8...
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| Idioma: | inglês |
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American Institute of Physics Publishing
2019
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| Acesso em linha: | https://demo7.dspace.org/handle/123456789/446 |
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| author | Chen, Renjie Zhao, Teng Tian, Tian Cao, Shuai Coxon, Paul Xi, Kai Fairen-Jimenez, David Kumar, Ramachandran Cheetham, Anthony |
| author2 | Organic Synthesis (ORSY) |
| author_browse | Cao, Shuai Cheetham, Anthony Chen, Renjie Coxon, Paul Fairen-Jimenez, David Kumar, Ramachandran Organic Synthesis (ORSY) Tian, Tian Xi, Kai Zhao, Teng |
| author_facet | Organic Synthesis (ORSY) Chen, Renjie Zhao, Teng Tian, Tian Cao, Shuai Coxon, Paul Xi, Kai Fairen-Jimenez, David Kumar, Ramachandran Cheetham, Anthony |
| author_sort | Chen, Renjie |
| collection | DSpace |
| description | A three-dimensional hierarchical sandwich-type graphene sheet-sulfur/carbon (GSS/CZIF8-D) composite for use in a cathode for a lithium sulfur (Li-S) battery has been prepared by an ultrasonic method. The microporous carbon host was prepared by a one-step pyrolysis of Zeolitic Imidazolate Framework-8 (ZIF-8), a typical zinccontaining metal organic framework (MOF), which offers a tunable porous structure into which electro-active sulfur can be diffused. The thin graphene sheet, wrapped around the sulfur/zeolitic imidazolate framework-8 derived carbon (S/CZIF8-D) composite, has excellent electrical conductivity and mechanical flexibility, thus facilitating rapid electron transport and accommodating the changes in volume of the sulfur electrode. Compared with the S/CZIF8-D sample, Li-S batteries with the GSS/CZIF8-D composite cathode showed enhanced capacity, improved electrochemical stability, and relatively high columbic efficiency by taking advantage of the synergistic effects of the microporous carbon from ZIF-8 and a highly interconnected graphene network. Our results demonstrate that a porous MOF-derived scaffold with a wrapped graphene conductive network structure is a potentially efficient design for a battery electrode that can meet the challenge arising from low conductivity and volume change |
| id | oai:localhost:123456789-446 |
| institution | DSPACE.FCHPT |
| language | English |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | American Institute of Physics Publishing |
| publisherStr | American Institute of Physics Publishing |
| record_format | dspace |
| spelling | oai:localhost:123456789-4462021-04-07T16:30:12Z Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries Chen, Renjie Zhao, Teng Tian, Tian Cao, Shuai Coxon, Paul Xi, Kai Fairen-Jimenez, David Kumar, Ramachandran Cheetham, Anthony Organic Synthesis (ORSY) Molecular Spectroscopy (MolSpec) A three-dimensional hierarchical sandwich-type graphene sheet-sulfur/carbon (GSS/CZIF8-D) composite for use in a cathode for a lithium sulfur (Li-S) battery has been prepared by an ultrasonic method. The microporous carbon host was prepared by a one-step pyrolysis of Zeolitic Imidazolate Framework-8 (ZIF-8), a typical zinccontaining metal organic framework (MOF), which offers a tunable porous structure into which electro-active sulfur can be diffused. The thin graphene sheet, wrapped around the sulfur/zeolitic imidazolate framework-8 derived carbon (S/CZIF8-D) composite, has excellent electrical conductivity and mechanical flexibility, thus facilitating rapid electron transport and accommodating the changes in volume of the sulfur electrode. Compared with the S/CZIF8-D sample, Li-S batteries with the GSS/CZIF8-D composite cathode showed enhanced capacity, improved electrochemical stability, and relatively high columbic efficiency by taking advantage of the synergistic effects of the microporous carbon from ZIF-8 and a highly interconnected graphene network. Our results demonstrate that a porous MOF-derived scaffold with a wrapped graphene conductive network structure is a potentially efficient design for a battery electrode that can meet the challenge arising from low conductivity and volume change 2019-04-26T08:57:03Z 2019-04-26T08:57:03Z 16/12/14 https://demo7.dspace.org/handle/123456789/446 en American Institute of Physics Publishing |
| spellingShingle | Chen, Renjie Zhao, Teng Tian, Tian Cao, Shuai Coxon, Paul Xi, Kai Fairen-Jimenez, David Kumar, Ramachandran Cheetham, Anthony Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title | Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title_full | Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title_fullStr | Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title_full_unstemmed | Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title_short | Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries |
| title_sort | graphene wrapped sulfur metal organic framework derived microporous carbon composite for lithium sulfur batteries |
| url | https://demo7.dspace.org/handle/123456789/446 |
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