DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Jong Min | ko |
dc.contributor.author | Jo, Ahrae | ko |
dc.contributor.author | Lee, Kyung Ah | ko |
dc.contributor.author | Han, Hyeuk Jin | ko |
dc.contributor.author | Kim, Ye Ji | ko |
dc.contributor.author | Kim, Ho Young | ko |
dc.contributor.author | Lee, Gyu Rac | ko |
dc.contributor.author | Kim, Minjoon | ko |
dc.contributor.author | Park, Yemin | ko |
dc.contributor.author | Kang, Yun Sik | ko |
dc.contributor.author | Jung, Juhae | ko |
dc.contributor.author | Chae, Keun Hwa | ko |
dc.contributor.author | Lee, Eoyoon | ko |
dc.contributor.author | Ham, Hyung Chul | ko |
dc.contributor.author | Ju, Hyunchul | ko |
dc.contributor.author | Jung, Yeon Sik | ko |
dc.contributor.author | Kim, Jin Young | ko |
dc.date.accessioned | 2021-08-03T01:50:12Z | - |
dc.date.available | 2021-08-03T01:50:12Z | - |
dc.date.created | 2021-08-03 | - |
dc.date.issued | 2021-07 | - |
dc.identifier.citation | SCIENCE ADVANCES, v.7, no.30 | - |
dc.identifier.issn | 2375-2548 | - |
dc.identifier.uri | http://hdl.handle.net/10203/286971 | - |
dc.description.abstract | Unsupported Pt electrocatalysts demonstrate excellent electrochemical stability when used in polymer electrolyte membrane fuel cells; however, their extreme thinness and low porosity result in insufficient surface area and high mass transfer resistance. Here, we introduce three-dimensionally (3D) customized, multiscale Pt nanoarchitectures (PtNAs) composed of dense and narrow (for sufficient active sites) and sparse (for improved mass transfer) nanoscale building blocks. The 3D-multiscale PtNA fabricated by ultrahigh-resolution nanotransfer printing exhibited excellent performance (45% enhanced maximum power density) and high durability (only 5% loss of surface area for 5000 cycles) compared to commercial Pt/C. We also theoretically elucidate the relationship between the 3D structures and cell performance using computational fluid dynamics. We expect that the structure-controlled 3D electrocatalysts will introduce a new pathway to design and fabricate high-performance electrocatalysts for fuel cells, as well as various electrochemical devices that require the precision engineering of reaction surfaces and mass transfer. | - |
dc.language | English | - |
dc.publisher | AMER ASSOC ADVANCEMENT SCIENCE | - |
dc.title | Conformation-modulated three-dimensional electrocatalysts for high-performance fuel cell electrodes | - |
dc.type | Article | - |
dc.identifier.wosid | 000675849000007 | - |
dc.identifier.scopusid | 2-s2.0-85110277653 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 30 | - |
dc.citation.publicationname | SCIENCE ADVANCES | - |
dc.identifier.doi | 10.1126/sciadv.abe9083 | - |
dc.contributor.localauthor | Jung, Yeon Sik | - |
dc.contributor.nonIdAuthor | Jo, Ahrae | - |
dc.contributor.nonIdAuthor | Lee, Kyung Ah | - |
dc.contributor.nonIdAuthor | Kim, Ye Ji | - |
dc.contributor.nonIdAuthor | Kim, Ho Young | - |
dc.contributor.nonIdAuthor | Kang, Yun Sik | - |
dc.contributor.nonIdAuthor | Jung, Juhae | - |
dc.contributor.nonIdAuthor | Chae, Keun Hwa | - |
dc.contributor.nonIdAuthor | Lee, Eoyoon | - |
dc.contributor.nonIdAuthor | Ham, Hyung Chul | - |
dc.contributor.nonIdAuthor | Ju, Hyunchul | - |
dc.contributor.nonIdAuthor | Kim, Jin Young | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordPlus | OPERATION | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | MODEL | - |
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