Rescaling of metal oxide nanocrystals for energy storage having high capacitance and energy density with robust cycle life
DC Field | Value | Language |
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dc.contributor.author | Jeong, HM (Jeong, Hyung Mo) | - |
dc.contributor.author | Choi, KM (Choi, Kyung Min) | - |
dc.contributor.author | Cheng, T (Cheng, Tao) | - |
dc.contributor.author | Lee, DK (Lee, Dong Ki) | - |
dc.contributor.author | Zhou, RJ (Zhou, Renjia) | - |
dc.contributor.author | Ock, IW (Ock, Il Woo) | - |
dc.contributor.author | Milliron, DJ (Milliron, Delia | - |
dc.contributor.author | Goddard, WA (Goddard, William | - |
dc.contributor.author | Kang, JK (Kang, Jeung Ku) | - |
dc.date.accessioned | 2022-04-19T09:51:03Z | - |
dc.date.available | 2022-04-19T09:51:03Z | - |
dc.date.issued | 2015-06 | - |
dc.identifier.issn | 0027-8424 | - |
dc.identifier.issn | 1091-6490 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147161 | - |
dc.description.abstract | Nanocrystals are promising structures, but they are too large for achieving maximum energy storage performance. We show that rescaling 3-nm particles through lithiation followed by delithiation leads to high-performance energy storage by realizing high capacitance close to the theoretical capacitance available via ion-to-atom redox reactions. Reactive force-field (ReaxFF) molecular dynamics simulations support the conclusion that Li atoms react with nickel oxide nanocrystals (NiO-n) to form lithiated core-shell structures (Ni:Li2O), whereas subsequent delithiation causes Ni:Li2O to form atomic clusters of NiO-a. This is consistent with in situ X-ray photoelectron and optical spectroscopy results showing that Ni2+ of the nanocrystal changes during lithiation-delithiation through Ni-0 and back to Ni2+. These processes are also demonstrated to provide a generic route to rescale another metal oxide. Furthermore, assembling NiO-a into the positive electrode of an asymmetric device enables extraction of full capacitance for a counter negative electrode, giving high energy density in addition to robust capacitance retention over 100,000 cycles. | - |
dc.format.extent | 6 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | NATL ACAD SCIENCES | - |
dc.title | Rescaling of metal oxide nanocrystals for energy storage having high capacitance and energy density with robust cycle life | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1073/pnas.1503546112 | - |
dc.identifier.scopusid | 2-s2.0-84937856586 | - |
dc.identifier.wosid | 000357079400030 | - |
dc.identifier.bibliographicCitation | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.112, no.26, pp 7914 - 7919 | - |
dc.citation.title | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | - |
dc.citation.volume | 112 | - |
dc.citation.number | 26 | - |
dc.citation.startPage | 7914 | - |
dc.citation.endPage | 7919 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.url | https://www.pnas.org/doi/full/10.1073/pnas.1503546112 | - |
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