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  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Copper cobalt oxide using various precursors for oxygen evolution reaction electrocatalysts by coprecipitation method for AEMWE

2019년 8월 29일 16시 22분 28초
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목 10시 : 40분
Environmental Energy - General Student Session
저자 및
Sungmin Park, Myeong Je Jang1, Sung Mook Choi2,*
material science & engineering, Pusan National University, Korea
1Advanced Materials Engineering, University of Science & Technology, Korea
2Surface Technology Division, Korea Institute of Materials Science, Korea
Hydrogen energy is considered promising energy to replace fossil fuel because of environmental, infinite energy source and high energy density. In order to produce hydrogen, water electrolysis is suitable method because it can get a high purity of hydrogen without environmental pollution. But high overpotential of oxygen evolution reaction (OER) makes difficult to guarantee of good performance of water electrolysis. To solve these problem, electrocatalyst is necessary for reducing OER overpotential. Nobel metal catalyst such as IrO 2, RuO 2 is well known for ideal oxygen evolution reaction (OER) catalysts, but it has very high cost and scarcity. For this reason, many studies have focused on changing noble metal catalyst to non-noble metal catalyst. Among non-noble metal electrocatalyst, copper cobalt oxide is well known non-noble metal electrocatalyst, because copper cobalt oxide has a good stability and high conductivity. Many methods such as chemical deposition, hydrothermal, electrodeposition and coprecipitation are used to synthesize copper cobalt oxide for electrocatalyst. Especially, coprecipitation is good method for mass production, so it is advantageous for industrial utilization. Moreover, there are various precursors to synthesize by coprecipitation, however It is not known which precursors represent the best OER performance. In this study, we suggest the effect of morphology and activity control in precursor to copper cobalt oxide structures. Synthesized copper cobalt oxide OER catalysts is recorded the overpotential of 364 mV at 10 mA/cm 2 and low Tafel slope of 73.76 mV/dec in 1 M KOH. In addition, the synthesized catalyst is applied to the anode of the actual AEMWE cell through an electrode process.