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DC Field | Value | Language |
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dc.citation.endPage | 184 | - |
dc.citation.startPage | 177 | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 227 | - |
dc.contributor.author | Lee, Sang-Min | - |
dc.contributor.author | Kim, Yeon-Joo | - |
dc.contributor.author | Eom, Seung-Wook | - |
dc.contributor.author | Choi, Nam-Soon | - |
dc.contributor.author | Kim, Ki-Won | - |
dc.contributor.author | Cho, Sung-Baek | - |
dc.date.accessioned | 2023-12-22T04:08:35Z | - |
dc.date.available | 2023-12-22T04:08:35Z | - |
dc.date.created | 2013-07-04 | - |
dc.date.issued | 2013-04 | - |
dc.description.abstract | The self-discharge of Zn anode material is identified as a main factor that can limit the energy density of alkaline Zn-air batteries. Al2O3 has most positive effect on controlling the hydrogen evolution reaction accompanied by corroding Zn anode among various additives. The overpotential for hydrogen evolution is measured by potentio-dynamic polarization analysis. AI-oxide with high overpotential for hydrogen; evolution reaction is uniformly coated on the surface of Zn powders via chemical solution process. The morphology and composition of the surface-treated and pristine Zn powders are characterized by SEM, EDS, XRD and XPS analyses. Aluminum is distributed homogeneously over the surface of modified Zn powders, indicating uniform coating of Al-oxide, and O1s and Al2p spectra further identified surface coating layer to be the Al-oxide. The Al-oxide coating layer can prevent Zn from exposing to the KOH electrolyte, resulting in minimizing the side reactions within batteries. The 0.25 wt.% aluminum oxide coated Zn anode material provides discharging time of more than 10 h, while the pristine Zn anode delivers only 7 h at 25 mA cm(-2). Consequently, a surface-treated Zn electrode can reduce self-discharge which is induced by side reaction such as H-2 evolution, resulting in increasing discharge capacity. | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.227, pp.177 - 184 | - |
dc.identifier.doi | 10.1016/j.jpowsour.2012.11.046 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.scopusid | 2-s2.0-84870725160 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/3380 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84870725160 | - |
dc.identifier.wosid | 000315309900027 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Improvement in self-discharge of Zn anode by applying surface modification for Zn-air batteries with high energy density | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Self-discharge | - |
dc.subject.keywordAuthor | Overpotential | - |
dc.subject.keywordAuthor | Hydrogen evolution | - |
dc.subject.keywordAuthor | Surface modification | - |
dc.subject.keywordPlus | POROUS ZINC ELECTRODES | - |
dc.subject.keywordPlus | ELECTROCHEMICAL-BEHAVIOR | - |
dc.subject.keywordPlus | ALKALINE BATTERIES | - |
dc.subject.keywordPlus | CORROSION | - |
dc.subject.keywordPlus | POLARIZATION | - |
dc.subject.keywordPlus | INHIBITORS | - |
dc.subject.keywordPlus | ADDITIVES | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | GEL | - |
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