DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, Yun Sik | ko |
dc.contributor.author | Choi, Kwang-Hyun | ko |
dc.contributor.author | Ahn, Docheon | ko |
dc.contributor.author | Lee, Myeong Jae | ko |
dc.contributor.author | Baik, Jaeyoon | ko |
dc.contributor.author | Chung, Dong Young | ko |
dc.contributor.author | Kim, Mi-Ju | ko |
dc.contributor.author | Lee, Stanfield Youngwon | ko |
dc.contributor.author | Kim, Minhyoung | ko |
dc.contributor.author | Shin, Heejong | ko |
dc.contributor.author | Lee, Kug-Seung | ko |
dc.contributor.author | Sung, Yung-Eun | ko |
dc.date.accessioned | 2022-07-04T08:01:44Z | - |
dc.date.available | 2022-07-04T08:01:44Z | - |
dc.date.created | 2022-07-04 | - |
dc.date.issued | 2016-01 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.303, pp.234 - 242 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/297213 | - |
dc.description.abstract | Composition-controlled and carbon-supported PdFe nanoparticles (NPs) were prepared via a modified chemical synthesis after heat-treatment at high temperature under a reductive atmosphere. This novel synthesis, which combines the polyol reduction method and hydride method, was used to obtain monodispersed PdFe NPs. In addition, to induce structural modifications, the as-prepared PdFe NPs received heat-treatment under a reductive atmosphere. Structural characterization, including high resolution powder diffraction (HRPD), X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS) analysis, indicated that heat-treated PdFe NPs exhibited a higher degree of alloying and surface Pd atomic composition compared with as-prepared ones. Furthermore, new crystalline phases were detected after heat-treatment. Thanks to the structural alterations, heat-treated PdFe NPs showed similar to 3 and similar to 18 times higher mass- and area-normalized oxygen reduction reaction (ORR) activities, respectively than commercial Pt/C. Single cell testing with heat-treated PdFe catalysts exhibited a similar to 2.5 times higher mass-normalized maximum power density than the reference cell. Surface structure analyses, including cyclic voltammetry (CV), COad oxidation, and XPS, revealed that, after heat-treatment, a downshift of the Pd d-band center occurred, which led to a decrease in the affinity of Pd for oxygen species, resulting in more favorable ORR kinetics. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Effect of post heat-treatment of composition-controlled PdFe nanoparticles for oxygen reduction reaction | - |
dc.type | Article | - |
dc.identifier.wosid | 000370463400029 | - |
dc.identifier.scopusid | 2-s2.0-84946761602 | - |
dc.type.rims | ART | - |
dc.citation.volume | 303 | - |
dc.citation.beginningpage | 234 | - |
dc.citation.endingpage | 242 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2015.11.011 | - |
dc.contributor.localauthor | Chung, Dong Young | - |
dc.contributor.nonIdAuthor | Kang, Yun Sik | - |
dc.contributor.nonIdAuthor | Choi, Kwang-Hyun | - |
dc.contributor.nonIdAuthor | Ahn, Docheon | - |
dc.contributor.nonIdAuthor | Lee, Myeong Jae | - |
dc.contributor.nonIdAuthor | Baik, Jaeyoon | - |
dc.contributor.nonIdAuthor | Kim, Mi-Ju | - |
dc.contributor.nonIdAuthor | Lee, Stanfield Youngwon | - |
dc.contributor.nonIdAuthor | Kim, Minhyoung | - |
dc.contributor.nonIdAuthor | Shin, Heejong | - |
dc.contributor.nonIdAuthor | Lee, Kug-Seung | - |
dc.contributor.nonIdAuthor | Sung, Yung-Eun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Oxygen reduction reaction | - |
dc.subject.keywordAuthor | PdFe nanoparticles | - |
dc.subject.keywordAuthor | Pd surface segregation | - |
dc.subject.keywordAuthor | Pd d-band | - |
dc.subject.keywordAuthor | Pd K-edge | - |
dc.subject.keywordPlus | ENHANCED ACTIVITY | - |
dc.subject.keywordPlus | SURFACE SEGREGATION | - |
dc.subject.keywordPlus | ALLOY CATALYSTS | - |
dc.subject.keywordPlus | METAL CATALYSTS | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | CO | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | MONOLAYER | - |
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