Nanoconfined vanadium nitride in 3D porous reduced graphene oxide microspheres as high-capacity cathode for aqueous zinc-ion batteries
DC Field | Value | Language |
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dc.contributor.author | Park, Jin-Sung | - |
dc.contributor.author | Wang, Sung Eun | - |
dc.contributor.author | Jung, Dae Soo | - |
dc.contributor.author | Lee, Jung-Kul | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2022-08-12T02:40:47Z | - |
dc.date.available | 2022-08-12T02:40:47Z | - |
dc.date.created | 2022-08-12 | - |
dc.date.issued | 2022-10-15 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/142857 | - |
dc.description.abstract | Aqueous zinc-ion batteries (ZIBs) are receiving considerable research highlights owing to their high safety and environment-friendliness. To implement this promising technology for grid-scale energy storage, effective cathode materials with high capacity, cycle stability, and electrochemical kinetics should be developed. Herein, the synthesis of uniquely structured porous VN-reduced graphene oxide composite (VN-rGO) microspheres through a facile spray pyrolysis process and their application as cathodes for ZIBs are introduced. The electro-chemical reaction mechanism of VN-rGO microspheres with zinc ions is investigated through various in situ and ex situ analyses. During the initial charge process, VN phase transforms into the Zn-3(OH)(2)V2O7.2H(2)O (ZVOH) phase. From the second cycle and on, the ZVOH phase undergoes zinc-ion ingress and egress processes. VN-rGO microspheres exhibit an unprecedented high capacity (809 mA h g(-1) at 0.1 A g-1), high energy density (613 W h kg(-1)), and good rate capability (467 mA h g(-1) at 2.0 A g(-1)). The cathode delivers a reversible capacity of 445 mA h g(-1) after 400 cycles at 1.0 A g(-1), which ascertains the robustness of the structure. The 3D porous rGO matrix to which VN nanocrystals are homogenously anchored accelerates the zinc-ion storage kinetics and en-dows the cathode with structural robustness. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | ANODE MATERIAL | - |
dc.subject | CARBON NANOFIBERS | - |
dc.subject | DOPED GRAPHENE | - |
dc.subject | PERFORMANCE | - |
dc.subject | COMPOSITE | - |
dc.subject | KINETICS | - |
dc.title | Nanoconfined vanadium nitride in 3D porous reduced graphene oxide microspheres as high-capacity cathode for aqueous zinc-ion batteries | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.cej.2022.137266 | - |
dc.identifier.scopusid | 2-s2.0-85131632471 | - |
dc.identifier.wosid | 000810439200004 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.446 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 446 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | ANODE MATERIAL | - |
dc.subject.keywordPlus | CARBON NANOFIBERS | - |
dc.subject.keywordPlus | DOPED GRAPHENE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordAuthor | Vanadium nitride | - |
dc.subject.keywordAuthor | Graphene oxide | - |
dc.subject.keywordAuthor | Cathode materials | - |
dc.subject.keywordAuthor | Spray pyrolysis | - |
dc.subject.keywordAuthor | Zinc-ion batteries | - |
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