Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 백운규 | - |
dc.date.accessioned | 2016-11-02T02:18:30Z | - |
dc.date.available | 2016-11-02T02:18:30Z | - |
dc.date.issued | 2015-04 | - |
dc.identifier.citation | ADVANCED ENERGY MATERIALS, v. 5, NO 8, Page. 1-7 | en_US |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.issn | 1614-6840 | - |
dc.identifier.uri | http://onlinelibrary.wiley.com/doi/10.1002/aenm.201401945/abstract | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/24073 | - |
dc.description.abstract | Titanium niobium oxide (TiNb2O7) has been recognized as a promising anode material for lithium-ion batteries (LIBs) in view of its potential to operate at high rates with improved safety and high theoretical capacity of 387 mAh g(-1). However, it suffers from poor Li+ ion diffusivity and low electronic conductivity originated from its wide band gap energy (E-g ˃ 2 eV). Here, porous TiNb2O7 microspheres (PTNO MSs) are prepared via a facile solvothermal reaction. PTNO MSs have a particle size of approximate to 1.2 mu m and controllable pore sizes in the range of 5-35 nm. Ammonia gas nitridation treatment is conducted on PTNO MSs to introduce conducting Ti1-xNbxN layer on the surface and form nitridated PTNO (NPTNO) MSs. The porous structure and conducting Ti1-xNbxN layer enhance the transport kinetics associated with Li+ ions and electrons, which leads to significant improvement in electrochemical performance. As a result, the NPTNO electrode shows a high discharge capacity of approximate to 265 mAh g(-1), remarkable rate capability (approximate to 143 mAh g(-1) at 100 C) and durable long-term cyclability (approximate to 91% capacity retention over 1000 cycles at 5 C). These results demonstrate the great potential of TiNb2O7 as a practical high-rate anode material for LIBs. | en_US |
dc.description.sponsorship | This work was financially supported by National Research Foundation of Korea (NRF) through Grant No. K20704000003TA050000310, Global Research Laboratory (GRL) Program provided by the Korean Ministry of Education, Science and Technology (MEST) in 2011, the International Cooperation program of the Korea Insitute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No. 2011T100100369) and WCU (World Class University) program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (R31-10092). | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY-V C H VERLAG GMBH | en_US |
dc.subject | CATHODE MATERIALS | en_US |
dc.subject | FACILE SYNTHESIS | en_US |
dc.subject | ENERGY-STORAGE | en_US |
dc.subject | THIN-FILMS | en_US |
dc.subject | LONG-LIFE | en_US |
dc.subject | LI4TI5O12 | en_US |
dc.subject | ANODE | en_US |
dc.subject | XPS | en_US |
dc.subject | NITRIDES | en_US |
dc.subject | TITANIUM | en_US |
dc.title | Porosity-Controlled TiNb2O7 Microspheres with Partial Nitridation as A Practical Negative Electrode for High-Power Lithium-Ion Batteries | en_US |
dc.type | Article | en_US |
dc.relation.no | 8 | - |
dc.relation.volume | 5 | - |
dc.identifier.doi | 10.1002/aenm.201401945 | - |
dc.relation.page | 1-7 | - |
dc.relation.journal | ADVANCED ENERGY MATERIALS | - |
dc.contributor.googleauthor | Park, Hyunjung | - |
dc.contributor.googleauthor | Wu, Hao Bin | - |
dc.contributor.googleauthor | Song, Taeseup | - |
dc.contributor.googleauthor | Lou, Xiong Wen(David) | - |
dc.contributor.googleauthor | Paik, Ungyu | - |
dc.relation.code | 2015012402 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ENERGY ENGINEERING | - |
dc.identifier.pid | upaik | - |
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