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Synthesis of Bi-Metallic Organic Frameworks and Their Capacitive Behaviors According to Metal Mixing Ratio

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Metallic organic frameworks (MOFs) with mixed metals has attracted attention as electrochemical energy storage material because it has high specific surface area, synergy of two metals, and a new crystal structure different from that of conventional MOF. In this study, we synthesized MOFs, including nickel and zinc, by hydrothermal method at a time. We investigated the effect of two metal ratios on the capacitive behavior. Through the structure and morphology analysis, it was found that Ni–Zn-MOF forms a completely different crystal structure from MOF using one metal, and found that it is a porous material. As a result of electrochemical measurements with cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD), the specific capacitance of Ni–Zn-MOF 2:1 with a nickel to zinc ratio of 2:1 was 616 F g−1 at a current density was 1 A g−1.
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Keywords: Electrochemical Analysis; Metal Organic Frameworks; Nickel; Supercapacitor; Zinc

Document Type: Research Article

Affiliations: 1: Department of Chemical and Biomolecular Engineering, Pusan National University, 2, Busandaehak-ro 63 beon-gil, Geumjeong-gu, Busan 46241, South Korea 2: Department of Chemical Engineering, Korea University of Technology and Education, Chunjeolno, Byeongchun, Cheonan-si 31253, South Korea

Publication date: May 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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