High-Performance Asymmetric Supercapacitors Based on Monodisperse CuO@C Polyhedron Nanocomposites
- Title
- High-Performance Asymmetric Supercapacitors Based on Monodisperse CuO@C Polyhedron Nanocomposites
- Author
- 유원철
- Keywords
- Asymmetric supercapacitor; Pseudocapacitor; MOF-derived metal oxide@carbon; Reducedinterfacial resistance; Promoted mass-transport property
- Issue Date
- 2021-04
- Publisher
- WILEY-V C H VERLAG GMBH
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v. 42, NO 4, Page. 649-657
- Abstract
- Herein, CuO nanocrystals spatially embedded inside carbon polyhedron (CuO@C) derived via morphology-preserved transformation of metal-organic frameworks (MOFs) are utilized for high-performance asymmetric supercapacitors (SCs). Using a conventional MOF (several micrometers in size), pore-filling with polymer inside MOF (polymer@MOF) via vapor-phase polymerization (VPP) process was achieved that amount of polymer used for VPP can be readily adjusted to control the carbon content of CuO@C after thermolysis and subsequent oxidation processes. When monodisperse and nano-sized MOF is used for CuO@C (denoted as nCuO@C_1), it presents superior electrochemical performance because monodispersity and smaller size reduce interfacial resistance and promote mass-transport property, respectively. Asymmetric SC of nCuO@C_1 with carbon sphere (CS) as a counter electrode presents excellent energy density of 55.47 Wh/kg and long-term stability of 88.7% at 5000 cycles, comparable to the best MO-based asymmetric SCs derived from MOFs.
- URI
- https://onlinelibrary.wiley.com/doi/10.1002/bkcs.12263https://repository.hanyang.ac.kr/handle/20.500.11754/171733
- ISSN
- 1229-5949; 0253-2964
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML