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      저자 : Abhay Kumar Choudhary (검색결과 1 건)
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        Synthesis of low-cost HNO3-functionalized acetylene black carbon supported Pt-Ru/CAB nano electrocatalysts for the application in direct ethanol fuel cell (DEFC)

        Abhay Kumar Choudhary,Hiralal Pramanik 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.10

        Ethanol electrooxidation was thoroughly investigated on laboratory synthesized Pt-Ru nano electrocatalysts. Low cost acetylene black carbon functionalized by HNO3 was used as support material for synthesized Pt-Ru/CAB electrocatalysts. The effect of synthesis methods on the major electrocatalytic properties of Pt-Ru/CAB electrocatalysts were studied thoroughly. The electrocatalysts Pt-Ru/CAB were manufactured by different chemical reduction methods. The electrocatalysts were designated as Pt-Ru/CAB-PLM for polyol reduction and Pt-Ru/CAB-FAM for formic acid reduction method, respectively. The electrocatalyst synthesis method and treatment of support material remarkably enhanced the catalytic performance of synthesized Pt-Ru/CAB electrocatalysts. The commercial Pt-Ru/C was selected as anode electrocatalyst for comparative study with the synthesis electrocatalyst in terms of performance in half cell study and in a single direct ethanol fuel cell as well. In the direct ethanol fuel cell, synthesized Pt-Ru/CAB-PLM produced maximum open circuit voltage of 0.71 V and highest power density of 6.02 mW/cm2 at a current density of 19.52mA/ cm2 at the room temperature of 35 oC. Whereas, the maximum power density of 5.13mW/cm2 at a current density of 18.70 mA/cm2 and open circuit voltage of 0.717 V were obtained for commercial Pt-Ru/C electrocatalyst at the same temperature (35 oC). The power density enhanced around 2.17 times when cell temperature was increased from 35 oC to 80 oC using anode electrocatalyst Pt-Ru/CAB-PLM. The performance of synthesized Pt-Ru/CAB-PLM is excellent for the ethanol electrooxidation and, thus, could replace commercial Pt-Ru/C.

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