비정질 Cu(OH)₂/ZIF-67 복합체를 통한 슈도커패시턴스 향상과 슈퍼커패시터 성능 개선

To address the intermittent nature of renewable energy, highly efficient high-performance energy storage devices are essential. Among various options, supercapacitors have attracted significant attention because they provide high power density, rapid charge-discharge capability, and long cycle life....

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Vydáno v:대한금속·재료학회지, 63(11) Ročník 63; číslo 11; s. 913 - 918
Hlavní autoři: 김인태, In Tae Kim, 이성준, Sung Jun Lee, 박서현, Seo Hyun Park, 이승훈, Seung Hun Lee, 채문석, Munseok S. Chae, 박희정, Hee Jung Park, 김치호, Chiho Kim, 이우재, Woo-jae Lee, 박유세, Yoo Sei Park
Médium: Journal Article
Jazyk:korejština
Vydáno: 대한금속재료학회 05.11.2025
대한금속·재료학회
Témata:
Energy storage
Metal support template
MOF
Pseudocapacitor
Supercapacitor
재료공학
ISSN:1738-8228, 2288-8241
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Shrnutí:To address the intermittent nature of renewable energy, highly efficient high-performance energy storage devices are essential. Among various options, supercapacitors have attracted significant attention because they provide high power density, rapid charge-discharge capability, and long cycle life. In this study, a composite of amorphous Cu(OH)₂ grown on a metal-organic framework ZIF-67 (Cu(OH)₂@ZIF-67) was successfully synthesized via a facile solvothermal method. Detailed structural and surface analyses, including scanning and transmission electron microscopy as well as X-ray diffraction measurements, revealed that ultrathin Cu(OH)₂ nanosheets were uniformly grown on the ZIF-67 surface. The combination of the amorphous phase with the MOF provided abundant electrochemically active sites and facilitated rapid ion transport, significantly contributing to greatly improved charge storage behavior. Electrochemical characterization demonstrated that Cu(OH)₂@ZIF-67 exhibited a specific capacitance of 168 F/g at 3 A/g, approximately four times higher than that of pristine ZIF-67, while maintaining superior energy density across a wide power range. These findings demonstrate that introducing an amorphous structure onto MOF-derived metal supports not only effectively enhances the overall performance of supercapacitors but also provides valuable insights for the rational design, optimization, and potential practical and technological applications of hybrid electrode materials in next-generation high-performance energy storage systems. (Received 20 August, 2025; Accepted 11 September, 2025)
Bibliografie:The Korean Institute of Metals and Materials
ISSN:1738-8228
2288-8241
DOI:10.3365/KJMM.2025.63.11.913