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The goal of this paper is to find an operating conditions of the single direct ethanol fuel cell such as the cell temperature, and flow rates of ethanol and oxygen. To investigate the output characteristics, the electrical current increased from 0[A] with interval of 0.001[A] every 2[s], and the cell voltage was increased until the voltage became 0.05[V]. Related to the effect of the cell temperature, the output characteristics both voltage and power were increased upto 80[℃] according to the increase of the current density, but those were decreased over that temperature. In addition, the optimal flow rate of ethanol in anode was identified as of 2[mL/min] due to the dependence of generation rate such as the hydrogen ion and electron. And the flow rate of oxygen in cathode was desirable to about 300[sccm/min], it might be affected by the chemical reaction rate of the water formation among hydrogen ion, electron, and oxygen. Consequently, the fundamental conditions were identified in this work, and it will be carried out to find the best conditions of membrane by the effect of the plasma surface treatment, and the effect of other catalysts except for a platinum. Key Words : Direct ethanol fuel cell, Hydrogen ion, Operating conditions, Temperature, Voltage *정 회 원 : 경남대 전기공학과 박사과정** 비 회 원 : 경남대 전기공학과 공학석사***정 회 원 : 경남대 전기공학과 교수 † 교신저자, 정회원 : 경남대 전기공학과 교수 E-mail : jypark@kyungnam.ac.kr 접수일자 : 2011년 8월 24일 최종완료 : 2011년 10월 10일 |
