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제125회 대한화학회 학술발표회 및 총회 Strong Interfacial Interaction and Efficient Electrode Functionality of Prussian Blue-Monolayered Metal Oxide Nanocomposites

2020년 2월 12일 19시 04분 32초
MAT.P-843 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
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Material Chemistry
저자 및
Xiaoyan Jin, Seong-Ju Hwang*
Department of Materials Science and Engineering, Yonsei University, Korea
An efficient interfacial chemical interaction between Prussian blue (PB) nanocrystals and monolayered metal oxide nanosheet provides an effective way to explore strongly-coupled composite materials with excellent supercapacitor electrode functionality. The highly porous nanohybrids of PB-layered MnO2 are synthesized by crystal growth of PB nanocrystals on the monolayered MnO2 nanosheets. The coordinative bonding between cyanide ligand of PB and MnO2 nanosheet induces significant interfacial charge transfer and the increase of the metal oxidation state of PB. The obtained PB-layered MnO2 nanocomposites possess expanded surface area than does the pristine PB material, indicating the enhancement of porosity by the hybridization. Of prime importance is that the PB-MnO2 nanocomposites show larger specific capacitances with better cyclability and better stability than does the MnO2 free-PB material, underscoring the beneficial effect of hybridization on the electrode performance and stability of PB. The present study clearly demonstrates that an effective way to explore high performance electrode for supercapacitor is developed by employing exfoliated inorganic nanosheet as an immobilization matrix for PB nanocrystals.