DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Jinhyuk | ko |
dc.contributor.author | Seo, Dong-Hwa | ko |
dc.contributor.author | Balasubramanian, Mahalingam | ko |
dc.contributor.author | Twu, Nancy | ko |
dc.contributor.author | Li, Xin | ko |
dc.contributor.author | Ceder, Gerbrand | ko |
dc.date.accessioned | 2023-05-03T06:01:41Z | - |
dc.date.available | 2023-05-03T06:01:41Z | - |
dc.date.created | 2023-05-03 | - |
dc.date.created | 2023-05-03 | - |
dc.date.created | 2023-05-03 | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | ENERGY & ENVIRONMENTAL SCIENCE, v.8, no.11, pp.3255 - 3265 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.uri | http://hdl.handle.net/10203/306497 | - |
dc.description.abstract | Recent successes with disordered Li-excess materials and applications of percolation theory have highlighted cation-disordered oxides as high capacity and energy density cathode materials. In this work, we present a new class of high capacity cation-disordered oxides, lithium-excess nickel titanium molybdenum oxides, which deliver capacities up to 250 mA h g(-1). These materials were designed from percolation theory which predicts lithium diffusion to become facile in cation-disordered oxides as the lithium-excess level increases (x > 1.09 in LixTM2-xO2). The reversible capacity and rate capability in these compounds are shown to considerably improve with lithium excess. In particular, Li1.2Ni1/3Ti1/3Mo2/15O2 delivers up to 250 mA h g(-1) and 750 W h kg(-1) (similar to 3080 W h l(-1)) at 10 mA g(-1). Combining in situ X-ray diffraction, X-ray absorption near edge spectroscopy, electron energy loss spectroscopy, and electrochemistry, we propose that first charging Li1.2Ni1/3Ti1/3Mo2/15O2 to 4.8 V occurs with Ni2+/Ni similar to 3+ oxidation, oxygen loss, and oxygen oxidation in this sequence, after which Mo6+ and Ti4+ can be reduced upon discharge. Furthermore, we discuss how oxygen loss with lattice densification can affect lithium diffusion in the material by decreasing the Li-excess level. From this understanding, strategies for further improvements are proposed, setting new guidelines for the design of high performance cation-disordered oxides for rechargeable lithium batteries. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | A new class of high capacity cation-disordered oxides for rechargeable lithium batteries: Li-Ni-Ti-Mo oxides | - |
dc.type | Article | - |
dc.identifier.wosid | 000364324500020 | - |
dc.identifier.scopusid | 2-s2.0-84946143674 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 11 | - |
dc.citation.beginningpage | 3255 | - |
dc.citation.endingpage | 3265 | - |
dc.citation.publicationname | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.identifier.doi | 10.1039/c5ee02329g | - |
dc.contributor.localauthor | Seo, Dong-Hwa | - |
dc.contributor.nonIdAuthor | Lee, Jinhyuk | - |
dc.contributor.nonIdAuthor | Balasubramanian, Mahalingam | - |
dc.contributor.nonIdAuthor | Twu, Nancy | - |
dc.contributor.nonIdAuthor | Li, Xin | - |
dc.contributor.nonIdAuthor | Ceder, Gerbrand | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | X-RAY-ABSORPTION | - |
dc.subject.keywordPlus | CATHODE MATERIAL | - |
dc.subject.keywordPlus | ION BATTERIES | - |
dc.subject.keywordPlus | METAL-OXIDES | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | ELECTROCHEMISTRY | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | MN | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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