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학술발표회초록보기

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Platinum-Coated Porous Carbon Electrode for Hydrogen Evolving Catalyst in Carbonization of Carbon Dioxide

등록일
2012년 2월 16일 09시 51분 42초
접수번호
0678
발표코드
ELEC.P-1239 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
오세영, 신운섭
서강대학교 화학과, Korea
Carbonization of CO2 through electrolysis of saline water includes the production of hydroxide ions by hydrogen evolving reaction at cathode, followed by the addition of Ca2+ or Mg2+. In this system, it is important that hydrogen gas evolves efficienctly at low overvoltage. The development of highly porous electrode having a good H2 evolving catalyst is a key factor. On a carbon paper polyaniline thin-layer was coated as an adlayer first and platinum was electrodeposited by voltage sweeping. The amount of deposited Pt could be controlled by changing the number of sweeping times. The SEM images of the electrode show that Pt particles are deposited homogeneously and the roughness factor was measured to be 231.The electrode evolved H2 at ?0.8 V vs. Ag/AgCl at 20 mA?cm-2 in 0.5 M NaHCO3 (pH 8.3) when it was rotated at 2000 rpm speed. Note, the theoretical potential for H2 evolution at pH 8.3 is -0.7 V vs. Ag/AgCl.

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