DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ye, Seong Ji | ko |
dc.contributor.author | Kim, Do Youb | ko |
dc.contributor.author | Kim, Dong Wook | ko |
dc.contributor.author | Park, O. Ok | ko |
dc.contributor.author | Kang, Yongku | ko |
dc.date.accessioned | 2016-06-07T09:09:23Z | - |
dc.date.available | 2016-06-07T09:09:23Z | - |
dc.date.created | 2016-01-25 | - |
dc.date.created | 2016-01-25 | - |
dc.date.created | 2016-01-25 | - |
dc.date.issued | 2016-01 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.4, no.2, pp.578 - 586 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/207780 | - |
dc.description.abstract | Although morphology-controlled metal nanocatalysts supported on graphene sheets are promising, highly effective catalysts for various electrochemical reactions, their preparation is still challenging. In this paper, we report a facile method for preparing structures with highly branched Pd nanodendrites (PdNDs) supported on graphene nanoplatelets (GNPs) (PdNDs-GNP) and their application as a cathode catalyst in a nonaqueous Li-O-2 battery. PdNDs formed on the GNP sheets via a particle-attachment mechanism had an average size of approximately 14 nm, strongly anchored on the GNP sheets, and were well distributed. Binder-free, flexible PdNDs-GNP/graphene oxide (GO) paper electrodes were fabricated and used in a nonaqueous Li-O-2 battery. Because of the high catalytic activity of the PdNDs-GNP structures, the Li-O-2 cell using the PdNDs-GNP/GO paper electrode exhibited substantially lower overpotentials both on discharge and charge compared with those of the GNP/GO paper electrode without Pd nanocatalysts and even those of the paper electrode consisting of irregularly shaped Pd nanoparticles supported on GNP (PdNPs-GNP) and GO. We found that Li2O2 formed on the PdNDs-GNP/GO paper electrode had a sheet-like morphology, which decomposed more efficiently than did the large toroidal product formed on the GNP/GO paper electrode. Consequently, the Li-O-2 cell using the PdNDs-GNP/GO paper electrode exhibited greatly enhanced cyclability over 30 cycles as compared with that of the GNP/GO paper electrode (15 cycles). | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Facile synthesis of palladium nanodendrites supported on graphene nanoplatelets: an efficient catalyst for low overpotentials in lithium-oxygen batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000367272800029 | - |
dc.identifier.scopusid | 2-s2.0-84951842080 | - |
dc.type.rims | ART | - |
dc.citation.volume | 4 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 578 | - |
dc.citation.endingpage | 586 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c5ta08957c | - |
dc.contributor.localauthor | Park, O. Ok | - |
dc.contributor.nonIdAuthor | Kim, Do Youb | - |
dc.contributor.nonIdAuthor | Kim, Dong Wook | - |
dc.contributor.nonIdAuthor | Kang, Yongku | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | ENHANCED ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | PERFORMANCE LI-O-2 BATTERIES | - |
dc.subject.keywordPlus | PT BIMETALLIC NANODENDRITES | - |
dc.subject.keywordPlus | METHANOL OXIDATION | - |
dc.subject.keywordPlus | REDUCTION REACTION | - |
dc.subject.keywordPlus | CATHODE CATALYSTS | - |
dc.subject.keywordPlus | AIR BATTERIES | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | LONG-LIFE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
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