Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 방진호 | - |
dc.date.accessioned | 2022-05-23T06:53:13Z | - |
dc.date.available | 2022-05-23T06:53:13Z | - |
dc.date.issued | 2022-01 | - |
dc.identifier.citation | Chemistry of Materials; 1/25/2022, Vol. 34 Issue 2, p854-863, 10p | en_US |
dc.identifier.issn | 08974756 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acs.chemmater.1c03960 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/171079 | - |
dc.description.abstract | Entropy-stabilized titanium niobium oxides (TNOs) with crystallographic shear structures (e.g., TiNb2O7 and Ti2Nb10O29) are generally synthesized by high-temperature calcination in an air or an oxygen atmosphere to compensate for their positive enthalpies of formation. In this work, we demonstrate that changing the reaction atmosphere into a slightly reductive environment using in situ carbonization leads to the creation of a new class of TNO with a formula of TiNbO4. Unlike its predecessors, this new lithium reservoir is a rutile phase, and most strikingly, in situ X-ray diffraction analysis revealed that its lithium intercalation occurs via a purely solid-solution process. Since solid-electrolyte-interface-free, high capacity anode materials with long cyclic life are required to meet the stringent requirements of widespread lithium-ion battery utilization, this finding of a new electrode material with purely single-phase lithium intercalation is of great interest for the development of high-performance anode materials. Distinctive electrochemical behavior that is different from that of crystallographic shear structured TNO is revealed by in-depth electrochemical analyses, which is ascribed to the unique structural and electronic properties of TiNbO4. We believe this work opens a new avenue for the development of feasible oxide-based alternatives to graphite, which can be safer and suitable for high-power performance. | en_US |
dc.description.sponsorship | This work was supported by a grant from the Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT (NRF-2019R1A2C1003429 and NRF-2020R1C1C1008588) and by the Ministry of Education (NRF2018R1A6A1A03024231). | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.title | New Class of Titanium Niobium Oxide for a Li-Ion Host: TiNbO4 with Purely Single-Phase Lithium Intercalation | en_US |
dc.type | Article | en_US |
dc.relation.no | 2 | - |
dc.relation.volume | 34 | - |
dc.identifier.doi | 10.1021/acs.chemmater.1c03960 | - |
dc.relation.page | 854-863 | - |
dc.relation.journal | CHEMISTRY OF MATERIALS | - |
dc.contributor.googleauthor | Lee, Jeongmin | - |
dc.contributor.googleauthor | Kwak, Hunho H. | - |
dc.contributor.googleauthor | Bak, Sang-eun | - |
dc.contributor.googleauthor | Lee, Geun Jun | - |
dc.contributor.googleauthor | Hong, Seung-Tae | - |
dc.contributor.googleauthor | Abbas, Muhammad A. | - |
dc.contributor.googleauthor | Bang, Jin Ho | - |
dc.relation.code | 2022037910 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E] | - |
dc.sector.department | DEPARTMENT OF CHEMICAL AND MOLECULAR ENGINEERING | - |
dc.identifier.pid | jbang | - |
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