DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, Jeongwoo | ko |
dc.contributor.author | Kang, Dong Woo | ko |
dc.contributor.author | Kim, Hodong | ko |
dc.contributor.author | Hwang, Byunghoon | ko |
dc.contributor.author | Lee, Jae W. | ko |
dc.date.accessioned | 2022-09-27T03:00:13Z | - |
dc.date.available | 2022-09-27T03:00:13Z | - |
dc.date.created | 2022-09-27 | - |
dc.date.issued | 2023-01 | - |
dc.identifier.citation | CHEMICAL ENGINEERING JOURNAL, v.451, no.3 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | http://hdl.handle.net/10203/298702 | - |
dc.description.abstract | The use of a free-standing carbon interlayer is a promising approach for the development of lithium-sulfur (Li-S) batteries because it suppresses the shuttle phenomenon and provides outstanding flexible characteristics. However, the thickness required to maintain the unique properties of the free-standing interlayer inevitably inhibits the transport of Li ions, causing sluggish redox kinetics. This work tackles the critical problem of the interlayer by synthesizing a composite in which Fe-based molecular catalysts are atomically incorporated into carbon nanofibers with superior pore characteristics realized by CO2 treatment. The templates self-generated during CO2 annealing provide high porosity and surface area, leading to effective Li-ion diffusion, and homo-geneous distribution of the catalytic sites in the form of Fe-N-2 to the free-standing paper. The Fe-N-2 configuration thermodynamically aids in overcoming the energy barrier of the rate-limiting step of Li2S4 to Li2S conversion while minimizing the shuttle phenomenon. Based on the effective Li-ion transport by improved pore properties, and the superior redox reaction ability of Fe-N-2, the assembled cell maintains a coulombic efficiency of 95% up to 1600 cycles at 3.0 C. In addition, a maximum areal capacity of 2.9 mAh cm(-2) is delivered for a high loading electrode with 4.2 mg cm(-2) at 45 degrees C. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | CO2-derived free-standing carbon interlayer embedded with molecular catalysts for improving redox performance in Li-S batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000853690300004 | - |
dc.identifier.scopusid | 2-s2.0-85137285988 | - |
dc.type.rims | ART | - |
dc.citation.volume | 451 | - |
dc.citation.issue | 3 | - |
dc.citation.publicationname | CHEMICAL ENGINEERING JOURNAL | - |
dc.identifier.doi | 10.1016/j.cej.2022.138909 | - |
dc.contributor.localauthor | Lee, Jae W. | - |
dc.contributor.nonIdAuthor | Hwang, Byunghoon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | CO2 utilization | - |
dc.subject.keywordAuthor | Li-S batteries | - |
dc.subject.keywordAuthor | Free-standing carbon interlayer | - |
dc.subject.keywordAuthor | Fe-N-2 active sites | - |
dc.subject.keywordAuthor | DFT calculations | - |
dc.subject.keywordPlus | HIERARCHICAL POROUS CARBON | - |
dc.subject.keywordPlus | LITHIUM-SULFUR BATTERIES | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
dc.subject.keywordPlus | POLYSULFIDES | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | DENSITY | - |
dc.subject.keywordPlus | CATHODE | - |
dc.subject.keywordPlus | SURFACE | - |
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