Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 윤종승 | - |
dc.date.accessioned | 2020-01-28T01:52:24Z | - |
dc.date.available | 2020-01-28T01:52:24Z | - |
dc.date.issued | 2019-04 | - |
dc.identifier.citation | ADVANCED ENERGY MATERIALS, v. 9, NO 15, no. 1803902 | en_US |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.issn | 1614-6840 | - |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.201803902 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/122250 | - |
dc.description.abstract | A multicompositional particulate Li[Ni0.9Co0.05Mn0.05]O-2 cathode in which Li[Ni0.94Co0.038Mn0.022]O-2 at the particle center is encapsulated by a 1.5 mu m thick concentration gradient (CG) shell with the outermost surface composition Li[Ni0.841Co0.077Mn0.082]O-2 is synthesized using a differential coprecipitation process. The microscale compositional partitioning at the particle level combined with the radial texturing of the refined primary particles in the CG shell layer protracts the detrimental H2 -> H3 phase transition, causing sharp changes in the unit cell dimensions. This protraction, confirmed by in situ X-ray diffraction and transmission electron microscopy, allows effective dissipation of the internal strain generated upon the H2 -> H3 phase transition, markedly improving cycling performance and thermochemical stability as compared to those of the conventional single-composition Li[Ni0.9Co0.05Mn0.05]O-2 cathodes. The compositionally partitioned cathode delivers a discharge capacity of 229 mAh g(-1) and exhibits capacity retention of 88% after 1000 cycles in a pouch-type full cell (compared to 68% for the conventional cathode). Thus, the proposed cathode material provides an opportunity for the rational design and development of a wide range of multifunctional cathodes, especially for Ni-rich Li[NixCoyMn1-x-y]O-2 cathodes, by compositionally partitioning the cathode particles and thus optimizing the microstructural response to the internal strain produced in the deeply charged state. | en_US |
dc.description.sponsorship | U.-H.K. and H.-H.R. contributed equally to this work. This work was mainly supported by the Global Frontier R&D Programme (2013M3A6B1078875) of the Center for Hybrid Interface Materials (HIM), funded by the Ministry of Science and ICT of the Korean government, and supported by the Human Resources Development program (No. 20154010200840) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry and Energy of the Korean government. | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY-V C H VERLAG GMBH | en_US |
dc.subject | concentration gradient cathodes | en_US |
dc.subject | microstructural control | en_US |
dc.subject | multifunctional cathodes | en_US |
dc.subject | Ni-rich layered Li[NixCoyMn1-x-y]O-2 | en_US |
dc.subject | rational design | en_US |
dc.title | Microstructure‐Controlled Ni‐Rich Cathode Material by Microscale Compositional Partition for Next‐Generation Electric Vehicles | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1002/aenm.201803902 | - |
dc.relation.page | 1-11 | - |
dc.relation.journal | ADVANCED ENERGY MATERIALS | - |
dc.contributor.googleauthor | Kim, Un-Hyuck | - |
dc.contributor.googleauthor | Ryu, Hoon-Hee | - |
dc.contributor.googleauthor | Kim, Jae-Hyung | - |
dc.contributor.googleauthor | Muecke, Robert | - |
dc.contributor.googleauthor | Kaghazchi, Payam | - |
dc.contributor.googleauthor | Yoon, Chong S. | - |
dc.contributor.googleauthor | Sun, Yang-Kook | - |
dc.relation.code | 2019036205 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | csyoon | - |
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