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자료유형
학술저널
저자정보
박대한 (고려대학교) 한지훈 (고려대학교) 김태헌 (고려대학교) 박정호 (고려대학교)
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대한전기학회 전기학회논문지 전기학회논문지 제67권 제12호
발행연도
2018.12
수록면
1,626 - 1,632 (7page)

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In this paper, we describe the fabrication and characterization of a hydrogen peroxide (H₂O₂) sensor based on palladium and copper (PdCu) electroplated laser induced graphene (LIG) electrodes. CO2 laser was used to form LIG electrodes on a PI film. This fabrication method allows simple control of the LIG electrode size and shape. The PdCu was electrochemically deposited on the LIG electrodes to improve the electrocatalytic reaction with H₂O₂. The electrochemical performance of this sensor was evaluated in terms of selectivity, sensitivity, and linearity. The physical characterization of this sensor was conducted using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), which confirmed that PdCu was formed on the laser induced graphene electrode. In order to increase the sensor sensitivity, the Pd:Cu ratio of the electroplated PdCu was varied to five different values and the condition of highest amperometric current at an identical of H₂O₂ concentration was chosen among them. The resulting amperometric current was highest when the ratio of Pd:Cu was 7:3 and this Pd;Cu ratio was employed in the sensor fabrication. The fabricated PdCu/LIG electrode based H₂O₂ sensor exhibited a sensitivity of 139.4 ㎂/mM·㎠, a broad linear range between 0 mM and 16 mM of H₂O₂ concentrations at applied potential of –0.15 V, and high reproducibility (RSD = 2.6%). The selectivity of the fabricated sensors was also evaluated by applying ascorbic acid, glucose, and lactose separately onto the sensor in order to see if the sensor ourput is affected by one of them and the sensor output was not affected. In conclusion, the proposed PdCu/LIG electrode based H₂O₂ sensor seems to be suitable H₂O₂ sensor in various applications.

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Abstract
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2. 본론
3. 결론
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