Gram-scale synthesis of bimetallic ZIFs and their thermal conversion to nanoporous carbon materials

Freddy Marpaung, Teahoon Park, Minjun Kim, Jin Woo Yi, Jianjian Lin, Jie Wang, Bing Ding, Hyunsoo Lim, Konstantin Konstantinov, Yusuke Yamauchi, Jongbeom Na, Jeonghun Kim*

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The hybrid metal-organic frameworks (MOFs) with different Zn2+/Co2+ ratios are synthesized at room temperature with deionized water as the solvent. This use of deionized water can increase the yield of hybrid MOFs (up to 65–70%). After the pyrolysis, the obtained nanoporous carbons (NPCs) show a decrease in the surface area, in which the highest surface area is 655 m2 g−1. The as-prepared NPCs are subjected to activation with KOH in order to increase their surface area and convert cobalt nanoparticles (Co NPs) to Co oxides. These activated carbons are applied to electrical double-layer capacitors (EDLCs) and pseudocapacitors due to the presence of CoO and Co3O4 nanoparticles in the carbon framework, leading to significantly enhanced specific capacitance as compared to that of pristine NPCs. This synthetic method can be utilized in future research to enhance pseudocapacitance further while maintaining the maximum surface area of the carbon materials.

本文言語English
論文番号1796
ジャーナルNanomaterials
9
12
DOI
出版ステータスPublished - 2019 12
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 材料科学(全般)

フィンガープリント

「Gram-scale synthesis of bimetallic ZIFs and their thermal conversion to nanoporous carbon materials」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル