Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 선양국 | - |
dc.date.accessioned | 2021-07-07T02:07:59Z | - |
dc.date.available | 2021-07-07T02:07:59Z | - |
dc.date.issued | 2020-03 | - |
dc.identifier.citation | SMALL METHODS, v. 4, no. 3, article no. 1900847 | en_US |
dc.identifier.issn | 2366-9608 | - |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/full/10.1002/smtd.201900847 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/162698 | - |
dc.description.abstract | A conversion-reaction-based nanosized Cu2P2O7-carbon composite is investigated as a novel cathode material with superior capacity for lithium-ion batteries. To overcome the sluggish kinetics of the conversion reaction, the nanosized Cu2P2O7-carbon composite is prepared by high-energy ball-milling of Cu2P2O7 and conductive carbon to achieve simultaneous nanosizing and carbon mixing. The nanosized Cu2P2O7-carbon composite exhibits a large specific capacity of approximate to 355 mAh g(-1) with an average operation voltage of approximate to 2.8 V (vs Li+/Li). Moreover, even at 10C (1C = 355 mA g(-1)), the composite delivers a capacity of approximate to 215 mAh g(-1), corresponding to approximate to 60% of its theoretical capacity. For 400 cycles at 1C, the nanosized Cu2P2O7-carbon composite exhibits capacity retention of approximate to 72% compared with the initial capacity as well as high Coulombic efficiency of more than 99%. The reversible conversion reaction mechanism of the nanosized Cu2P2O7-carbon composite under the Li-cell system is confirmed using various techniques, including operando/ex situ X-ray diffraction, X-ray absorption near edge structure spectroscopy, extended X-ray absorption fine structure spectroscopy, and transmission electron microscopy. It is verified that Cu2P2O7 is converted into Li4P2O7 and metallic Cu-0 on discharge and reversibly recovered to Cu2P2O7 on charge. | en_US |
dc.description.sponsorship | This research was supported by the Next Generation Engineering Researcher Program of the National Research Foundation of Korea funded by the Ministry of Science and ICT of Korea (No. NRF-2019H1D8A2106002), General Research Program of the National Research Foundation of Korea funded by the Ministry of Science and ICT of Korea (No. NRF-2019R1F1A1063415), the Radiation Technology R&D program of the National Research Foundation of Korea funded by the Ministry of Science and ICT of Korea (No. NRF-2019M2A2A6A05102365) and International Research & Development Program of the National Research Foundation of Korea funded by the Ministry of Science and ICT of Korea (No. NRF-2018K2A9A2A12000230). | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY-V C H VERLAG GMBH | en_US |
dc.subject | carbon mixing | en_US |
dc.subject | cathodes | en_US |
dc.subject | conversion reactions | en_US |
dc.subject | first-principles calculations | en_US |
dc.subject | nanosizing | en_US |
dc.title | Development of Novel Cathode with Large Lithium Storage Mechanism Based on Pyrophosphate‐Based Conversion Reaction for Rechargeable Lithium Batteries | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1002/smtd.201900847 | - |
dc.relation.page | 1-8 | - |
dc.relation.journal | SMALL METHODS | - |
dc.contributor.googleauthor | Lee, Yongseok | - |
dc.contributor.googleauthor | Jo, Jae Hyeon | - |
dc.contributor.googleauthor | Park, Hyunyoung | - |
dc.contributor.googleauthor | Ko, Wonseok | - |
dc.contributor.googleauthor | Kang, Jungmin | - |
dc.contributor.googleauthor | Myung, Seung-Taek | - |
dc.contributor.googleauthor | Sun, Yang-Kook | - |
dc.contributor.googleauthor | Kim, Jongsoon | - |
dc.relation.code | 2020054640 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ENERGY ENGINEERING | - |
dc.identifier.pid | yksun | - |
dc.identifier.researcherID | B-9157-2013 | - |
dc.identifier.orcid | http://orcid.org/0000-0002-0117-0170 | - |
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