Investigating energy storage ability of MIL101-(Fe) derivatives prepared using successive carbonization and oxidation for supercapacitors

Yung Fu Wu, Tsung Rong Kuo, Lu Yin Lin, Subbiramaniyan Kubendhiran, Kuan Chen Lai, Tzu Yang Chen, Sibidou Yougbaré

研究成果: 雜誌貢獻文章同行評審

摘要

Metal organic framework (MOF) with high surface area and tunable porous size is largely used as active material of supercapacitor (SC). MIL-101(Fe) composed of iron ions and terephthalic acid ligand is candidate active material of SC owing to its possible formation of carbon and iron compounds. Combining carbon and metal compound is feasible to establish efficient active material with ion adsorption/desorption and redox reaction charge storage abilities. In this study, it is the first time to investigate physical and electrochemical properties of MIL101(Fe) derivatives synthesized using carbonization and successive carbonization/oxidation processes as active materials of SC. Carbonization temperature of MIL-101(Fe) is optimized regarding to morphology, composition and defect/graphization ratio. The highest specific capacitance (CF) of 95.7 F/g at 20 mV/s is obtained for the carbonized MIL-101(Fe) (MIL101(Fe)-C) prepared at 800 °C, due to rough surface, hollow structure and suitable defect to graphization ratio. The MIL-101(Fe) and the successive carbonization/oxidation synthesized derivative electrodes merely achieve CF values of 44.3 and 0.1 F/g, respectively. Symmetric SC fabricated using optimized MIL101(Fe)-C electrodes shows the maximum energy density of 1.13 Wh/kg at 400 W/kg and excellent cycling stability with CF retention of 96% and Columbic efficiency of 72% in 8000 times repeated charging/discharging cycles.
原文英語
文章編號105420
期刊Journal of Energy Storage
55
DOIs
出版狀態已發佈 - 11月 2022

ASJC Scopus subject areas

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 電氣與電子工程

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