https://scholars.lib.ntu.edu.tw/handle/123456789/630809
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Wu, Junxiu | en_US |
dc.contributor.author | Liu, Hao Wen | en_US |
dc.contributor.author | Tang, Anwen | en_US |
dc.contributor.author | Zhang, Weifeng | en_US |
dc.contributor.author | Sheu, Hwo Shuenn | en_US |
dc.contributor.author | Lee, Jyh Fu | en_US |
dc.contributor.author | Liao, Yen Fa | en_US |
dc.contributor.author | Huang, Shuping | en_US |
dc.contributor.author | Wei, Mingdeng | en_US |
dc.contributor.author | NAE-LIH WU | en_US |
dc.date.accessioned | 2023-05-04T07:40:40Z | - |
dc.date.available | 2023-05-04T07:40:40Z | - |
dc.date.issued | 2022-11-01 | - |
dc.identifier.issn | 22112855 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/630809 | - |
dc.description.abstract | High-power, fast-charging capability is an urgent issue for the development of advanced Li-ion batteries (LIBs) for electrified mobility applications. An anatase titanium oxide mesocrystal (TOM) Li-ion battery (LIB) anode comprising extremely small (3–5 nm) and crystallographically coherent nanocrystallite subunits demonstrate a high specific capacity (up to 225 mAh g-1) and extraordinary rate capability and cycle stability under stressful currents (83 % capacity retention after 9000 cycles at 10 C rate, 1 C = 168 mA g-1), considerably outperforming the conventional nanocrystalline titanium oxide (TO) electrode. The investigation of the underlying (de)lithiation mechanism using synchrotron X-ray analyses and density functional theory calculations reveals a novel crystalline–amorphous–crystalline pathway for TOM involving an amorphous phase existing within a Li stoichiometry range approximately LixTiO2, x = 0.2–0.9. The combination of structure amorphization and existing of a fast inter-grain diffusion network inherent to the hierarchical interior of mesocrystal empowers the TOM electrode with orders-of-magnitude higher diffusion rates as compared with the TO electrode. The single-crystal-like crystallographic coherence of the (de)lithiation end-products enables favorable chemo-mechanical stability to avert particle cracking during high-rate cycling. The study indicates a potential new direction for engineering cycle-stable fast-charging electrode materials. | en_US |
dc.publisher | ELSEVIER | en_US |
dc.relation.ispartof | Nano Energy | en_US |
dc.subject | Anatase TiO 2 | Fast charging | Li-ion battery | Mesocrystal | Phase transformation | en_US |
dc.title | Unexpected reversible crystalline/amorphous (de)lithiation transformations enabling fast (dis)charge of high-capacity anatase mesocrystal anode | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.nanoen.2022.107715 | - |
dc.identifier.scopus | 2-s2.0-85136262705 | - |
dc.identifier.isi | WOS:000857389300002 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85136262705 | - |
dc.relation.journalvolume | 102 | en_US |
item.fulltext | no fulltext | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.grantfulltext | none | - |
item.openairetype | journal article | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0001-6545-8790 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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