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Anisotropic surface modulation of Pt catalysts for highly reversible Li-O 2 batteries: High index facet as a critical descriptor
DC Field | Value | Language |
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dc.contributor.author | Song, Kyeongse | - |
dc.contributor.author | Jung, Jaepyeong | - |
dc.contributor.author | Park, Mihui | - |
dc.contributor.author | Park, Hyeokjun | - |
dc.contributor.author | Kim, Hyung-Jin | - |
dc.contributor.author | Choi, Sang-Il | - |
dc.contributor.author | Yang, Junghoon | - |
dc.contributor.author | Kang, Kisuk | - |
dc.contributor.author | Han, Young-Kyu | - |
dc.contributor.author | Kang, Yong-Mook | - |
dc.date.accessioned | 2020-04-25T07:47:44Z | - |
dc.date.available | 2020-04-25T07:47:44Z | - |
dc.date.created | 2019-07-15 | - |
dc.date.issued | 2018-10 | - |
dc.identifier.citation | ACS Catalysis, Vol.8 No.10, pp.9006-9015 | - |
dc.identifier.issn | 2155-5435 | - |
dc.identifier.other | 78638 | - |
dc.identifier.uri | https://hdl.handle.net/10371/164987 | - |
dc.description.abstract | The surface structure of solid catalysts has been regarded as a critical descriptor for determining the catalytic activities in various applications. However, structure-dependent catalytic activities have been rarely understood for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) within Li-O-2 batteries. Here, we succeeded in the preparation of a Pt catalyst with an anisotropic structure and demonstrated its high catalytic activity in nonaqueous Li-O-2 batteries. The cathode incorporating Pt exposed with high-index {411} facets showed greatly enhanced ORR and OER performance in comparison to commercial Pt/C cathode. The anisotropic Pt catalyst improved ORR activity with a large capacity of 12 985 mAh g(carbon)(-1), high rate performance, and stable cyclic retention up to 70 cycles with the capacity limited to 1000 mAh g(carbon)(-1) Furthermore, the anisotropic Pt catalyst exhibited high round-trip efficiency of similar to 87% with a low OER potential (3.1 V) at a current density of 200 mA g(carbon)(-1) Our first-principles calculations revealed that the high-index facets, which contain step edge, kink, and ledge sites, are significantly more reactive than the lown terms of surface energy and O-binding energy. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | Anisotropic surface modulation of Pt catalysts for highly reversible Li-O 2 batteries: High index facet as a critical descriptor | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 강기석 | - |
dc.identifier.doi | 10.1021/acscatal.8b02172 | - |
dc.citation.journaltitle | ACS Catalysis | - |
dc.identifier.wosid | 000447224100006 | - |
dc.identifier.scopusid | 2-s2.0-85052734905 | - |
dc.citation.endpage | 9015 | - |
dc.citation.number | 10 | - |
dc.citation.startpage | 9006 | - |
dc.citation.volume | 8 | - |
dc.identifier.sci | 000447224100006 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kang, Kisuk | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | LI-AIR BATTERIES | - |
dc.subject.keywordPlus | LITHIUM-OXYGEN BATTERIES | - |
dc.subject.keywordPlus | ROUND-TRIP EFFICIENCY | - |
dc.subject.keywordPlus | HIGH-CAPACITY | - |
dc.subject.keywordPlus | ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | PLATINUM NANOPARTICLES | - |
dc.subject.keywordPlus | FREE CATHODE | - |
dc.subject.keywordPlus | LI2O2 | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordAuthor | oxygen reduction reaction | - |
dc.subject.keywordAuthor | oxygen evolution reaction | - |
dc.subject.keywordAuthor | anisotropic surface | - |
dc.subject.keywordAuthor | high index facet | - |
dc.subject.keywordAuthor | electrocatalyst | - |
dc.subject.keywordAuthor | Li-O-2 battery | - |
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