DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yun-Jung | ko |
dc.contributor.author | Lee, Jinhong | ko |
dc.contributor.author | Yuk, Seongmin | ko |
dc.contributor.author | Noh, Hyungjun | ko |
dc.contributor.author | Chu, Hyunwon | ko |
dc.contributor.author | Kwack, Hobeom | ko |
dc.contributor.author | Kim, Seokwoo | ko |
dc.contributor.author | Ryou, Myung-Hyun | ko |
dc.contributor.author | Kim, Hee-Tak | ko |
dc.date.accessioned | 2019-10-31T06:20:10Z | - |
dc.date.available | 2019-10-31T06:20:10Z | - |
dc.date.created | 2019-10-31 | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | JOURNAL OF POWER SOURCES, v.438 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10203/268080 | - |
dc.description.abstract | Metallic sodium is regarded as a promising anode material for sodium rechargeable batteries. However, sodium dendrite growth and exhaustive electrolyte decomposition cause the poor reversibility of the sodium metal electrode. Here, we present that, by forming a mixed surface of carbon and sodium metal, the sodium electrodeposition mode and stripping mechanism can be tuned. In order to systematically investigate sodium plating/stripping behavior on a mixed surface of carbon and sodium, we fabricate a carbon nanotube-sodium composite electrode with a simple rolling and folding method. As the carbon nanotube content is increased, the overpotentials for sodium nucleation and pit-formation are remarkably reduced. Postmortem and chronoamperometry analysis elucidate that sodium and sodiated carbon nanotube have a different sodium nucleation mode, and sodium nucleation is preferred on the sodiated carbon nanotube surface with lower nucleation energy, inducing a more uniform sodium deposition. Furthermore, the embedded carbon nanotube appears to help sodium stripping by providing a channel for a more facile sodium ion transport. As a result, the carbon nanotube-sodium composite electrode exhibites a 5 times higher cycling stability. The tuning of the nucleation and stripping behaviors by forming a mixed surface can be a viable approach for enhancing the reversibility of metal electrode. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Tuning sodium nucleation and stripping by the mixed surface of carbon nanotube-sodium composite electrodes for improved reversibility | - |
dc.type | Article | - |
dc.identifier.wosid | 000490030800026 | - |
dc.identifier.scopusid | 2-s2.0-85070704728 | - |
dc.type.rims | ART | - |
dc.citation.volume | 438 | - |
dc.citation.publicationname | JOURNAL OF POWER SOURCES | - |
dc.identifier.doi | 10.1016/j.jpowsour.2019.227005 | - |
dc.contributor.localauthor | Kim, Hee-Tak | - |
dc.contributor.nonIdAuthor | Chu, Hyunwon | - |
dc.contributor.nonIdAuthor | Kwack, Hobeom | - |
dc.contributor.nonIdAuthor | Kim, Seokwoo | - |
dc.contributor.nonIdAuthor | Ryou, Myung-Hyun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Sodium metal electrode | - |
dc.subject.keywordAuthor | Carbon nanotube | - |
dc.subject.keywordAuthor | Sodium metal batteries | - |
dc.subject.keywordAuthor | Sodium nucleation | - |
dc.subject.keywordAuthor | Chronoamperometry | - |
dc.subject.keywordPlus | GROWTH-MECHANISM | - |
dc.subject.keywordPlus | ION BATTERIES | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | NA | - |
dc.subject.keywordPlus | CHALLENGES | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.subject.keywordPlus | DENDRITES | - |
dc.subject.keywordPlus | HOST | - |
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