Supercapacitive property of metal-organic-frameworks with different pore dimensions and morphology
- Supercapacitive property of metal-organic-frameworks with different pore dimensions and morphology
- Deok Yoon Lee; Dipak V. Shinde; Eun-Kyung Kim; Wonjoo Lee; 오인환; Nabeen K. Shrestha; 이중기; Sung-Hwan Han
- Metal-organic-frameworks; Organic linkers; Pore sizes; Morphology; Supercapacitor
- Issue Date
- Microporous and mesoporous materials
- VOL 171, 53-57
- Three dicarboxylic acids with different molecular lengths were used as organic linkers to manipulate pore
size and surface area of the cobalt based metal–organic-frameworks (MOFs). The pore size and BET
surface area of the MOFs were determined and the influence of pore size and surface area on the supercapacitive
performance of the MOFs was studied using cyclic voltammetry and chronopotentiometry.
Among three MOFs investigated in the present study, the MOF with longer organic linker had larger
pores, larger surface area and the MOF film at the electrode surface had a continuously interconnected
leaflet like microstructure with less number of structural interfaces which provide the free path for
charge transfer. This MOF electrode exhibited highest supercapacitive properties with 179.2 F g-1,
31.4 Wh kg-1, and 5.64 kW kg-1 of specific capacitance, energy density and power density, respectively.
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