Potassium-ion storage mechanism of MoS2-WS2-C microspheres and their excellent electrochemical properties
DC Field | Value | Language |
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dc.contributor.author | Choi, Jae Hun | - |
dc.contributor.author | Park, Gi Dae | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.date.accessioned | 2021-08-30T02:49:17Z | - |
dc.date.available | 2021-08-30T02:49:17Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2021-03-15 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/49468 | - |
dc.description.abstract | Potassium-ion batteries are receiving increasing interest as a new type of secondary batteries because of their low redox potentials. In particular, two-dimensional transition metal dichalcogenides are being widely studied because they possess a layered structure with a large interlayer distance; these structural characteristics are favorable for hosting potassium-ions. However, capacity decay occurs and the intercalation of potassium-ions is hindered due to the huge volume expansion during the cycling process. Here, MoS2-WS2-C microspheres containing highly porous structure and heterogeneous interfaces are synthesized through facile spray pyrolysis. Benefiting from the unique structure and hetero-interfaces, the composite microspheres exhibit stable cycle performance and an outstanding rate performance. Meanwhile, a reversible capacity of 350 mA h g(-1) is achieved after 100 cycles at the current density of 100 mA g(-1), and even at the high current density of 5.0 A g(-1), it maintains a capacity of 176 mA h g(-1). The potassium-ion storage mechanism of MoS2-WS2-C microspheres is also systematically explored via ex-situ transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). With the advantages of highly reversible intercalation from WS2 and high specific capacity of conversion from MoS2, the MoS2-WS2-C microspheres achieve high rate performance and specific capacity. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | ANODE MATERIALS | - |
dc.subject | DOPED CARBON | - |
dc.subject | PERFORMANCE | - |
dc.subject | MOS2 | - |
dc.subject | COMPOSITE | - |
dc.subject | NANOCAPSULES | - |
dc.subject | FABRICATION | - |
dc.subject | BATTERIES | - |
dc.subject | DESIGN | - |
dc.subject | LAYERS | - |
dc.title | Potassium-ion storage mechanism of MoS2-WS2-C microspheres and their excellent electrochemical properties | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.identifier.doi | 10.1016/j.cej.2020.127278 | - |
dc.identifier.scopusid | 2-s2.0-85092518238 | - |
dc.identifier.wosid | 000613253500001 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.408 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 408 | - |
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 MATERIALS | - |
dc.subject.keywordPlus | DOPED CARBON | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | MOS2 | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | NANOCAPSULES | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | LAYERS | - |
dc.subject.keywordAuthor | Spray pyrolysis | - |
dc.subject.keywordAuthor | Transition metal dichalcogenide | - |
dc.subject.keywordAuthor | Molybdenum sulfide | - |
dc.subject.keywordAuthor | Tungsten sulfide | - |
dc.subject.keywordAuthor | Potassium-ion batteries | - |
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