화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터)
권호 20권 1호, p.424
발표분야 생물화공
제목 The Modification of Graphite Composite Electrode for Enzymatic Fuel Cell System and the Effect of Substrate Concentration
초록 Enzymatic fuel cells (EFCs) have been defined as systems capable of direct chemical to electrical energy conversion by specific fuel oxidation at the anode. The short life time and poor stability of the enzyme are the main barrier of system performance. Much of the current research is directed at solving these problems, with particular focus on new methods and materials for enzyme-electrode (mediator) integration. In this study, the novel modification method by various treatments was utilized to graphite powder as a component of mediator. The electrical properties of the electrode according to cyclic voltammetry were improved by current study. The EFC using GO/Co(OH)2/chitosan composites with a mediator delivered a high power density of up to 742 ± 5.2 μW/cm2 at 0.466 V and open circuit voltage of 0.578 V. Also, the effect of substrate (glucose) concentration was investigated for maximal power density. Under the 10mM of glucose concentration, power density and open circuit voltage were 1,058 ± 3.7 μW/cm2 and 0.625 V, respectively.
저자 김동섭1, 유하영1, 이자현1, 최한석1, 양수정1, 정다운1, 박철환2, 김승욱1
소속 1고려대, 2광운대
키워드 Enzymatic fuel cells; Electrode; Graphite oxidation; Glucose oxidase
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