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제125회 대한화학회 학술발표회 및 총회 Key factors of morphological transitions of Ni/C catalyst for hydrazine oxidation

2020년 2월 14일 15시 16분 27초
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Environmental Energy
저자 및
Jihyeon Park, Jaeyoung Lee1,*
Gwangju Institute of Science and Technology, Korea
1School of Earth Sciences and Environmental Enginee, Gwangju Institute of Science and Technology, Korea
Hydrazine fuel cell is one of the promising liquid fuel cells due to high theoretical voltage, high energy density, and no green gas emission. However, hydrazine can be decomposed faradaically or non-faradaically as a function of the type of catalyst used. Platinum, despite a noble metal, is an ambiguous catalyst due to faradaic reaction catalyst of hydrazine as well non-faradaic reaction. Therefore, in the aspect of fuel efficiency, platinum is not suitable for hydrazine catalyst. Nickel, which is the same family with platinum, is non-noble metal and quite good performance for hydrazine oxidation due to its similar structure to platinum. In these aspects, hydrazine fuel cell is further important, not requiring the expensive noble metal. In this paper, we synthesized Ni nanoparticles via polyol method changing the type of Ni precursor, since chemical, physical, and electro-chemical properties of a metal nanoparticle depend on its morphology and size. Then, catalyst ink was loaded on the rotating disk electrode (RDE), and cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were carried out.