Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Khan, Firoz | ko |
dc.contributor.author | Oh, Misol | ko |
dc.contributor.author | Kim, Jae Hyeon | ko |
dc.date.accessioned | 2019-04-18T08:45:07Z | - |
dc.date.available | 2019-04-18T08:45:07Z | - |
dc.date.created | 2019-03-29 | - |
dc.date.issued | 2019-08 | - |
dc.identifier.citation | Chemical Engineering Journal, v.369, pp.1024 - 1033 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9788 | - |
dc.description.abstract | Spinel Li 4 Ti 5 O 12 can replace carbon in Li-ion battery anodes due to its high voltage, preventing decomposition of the electrolyte and formation of Li metal dendrites. However, Li 4 Ti 5 O 12 has a low electronic conductivity and Li-ion diffusion coefficient, limiting its charge/discharge properties at high rate capacities, and also suffers from gassing during cycling. Here, we used N-functionalized graphene quantum dots interfacial layer, which (1) protects Li 4 Ti 5 O 12 from ambient degradation, (2) forms a thin and smooth solid-electrolyte interphase layer on the Li 4 Ti 5 O 12 surface, (3) acts as a charge transfer layer, (4) protects the Li 4 Ti 5 O 12 electrode from reactions with the electrolyte, and (5) suppresses gassing during cycling. Consequently, the Li-ion diffusion coefficient increased by ∼19%. The effectiveness of the N-functionalized graphene quantum dots is manifested in the specific capacity of 161 mAh/g at 50C, which is improved by ∼23% compared to pure Li 4 Ti 5 O 12 electrode and maintained for over 500 cycles. Unlike graphene, N-functionalized graphene quantum dots themselves work as a stable charge transporting and protecting layer. Our strategy successfully obtained a good cycling performance and long cycling life of Li 4 Ti 5 O 12 at high C-rates. © 2019 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | N-functionalized graphene quantum dots: Charge transporting layer for high-rate and durable Li 4 Ti 5 O 12 -based Li-ion battery | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.cej.2019.03.161 | - |
dc.identifier.wosid | 000463344800100 | - |
dc.identifier.scopusid | 2-s2.0-85063127016 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.citationVolume | 369 | - |
dc.identifier.citationStartPage | 1024 | - |
dc.identifier.citationEndPage | 1033 | - |
dc.identifier.citationTitle | Chemical Engineering Journal | - |
dc.type.journalArticle | Article | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordAuthor | Durable electrode | - |
dc.subject.keywordAuthor | Gassing behavior | - |
dc.subject.keywordAuthor | Graphene quantum dots | - |
dc.subject.keywordAuthor | Li-ion battery | - |
dc.subject.keywordAuthor | LTO anode | - |
dc.subject.keywordAuthor | N-functionalization | - |
dc.subject.keywordPlus | RATE-CAPABILITY | - |
dc.subject.keywordPlus | DOPED LI4TI5O12 | - |
dc.subject.keywordPlus | ANODE MATERIALS | - |
dc.subject.keywordPlus | HIGH-POWER | - |
dc.subject.keywordPlus | LITHIUM | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | ABSORPTION | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.contributor.affiliatedAuthor | Kim, Jae Hyeon | - |