电源技术
電源技術
전원기술
CHINESE JOURNAL OF POWER SOURCES
2009年
4期
249-250
,共2页
直接甲醇燃料电池(DMFC)%加热喷雾法%膜电极
直接甲醇燃料電池(DMFC)%加熱噴霧法%膜電極
직접갑순연료전지(DMFC)%가열분무법%막전겁
direct methanol fuel cell%heated-spray method%membrane electrode assembly (MEA)
采用加热喷雾制备扩散层的新方法,制备出性能优良的膜电极,并组装成单电池进行测试,对电池温度和空气流量两个电池运行参数进行研究.结果表明:加热喷雾法制备膜电极具有良好扩散层结构,获得了优良的电池性能;在电池温度为55℃、输出电压为0.271 V时,电池输出电流密度和功率密度分别达到了206.2 mA/cm~2和55.88 mW/cm~2.同时实验还表明,空气最佳流量为670 mL/min,电池温度的提高有利于电池反应的动力学,进而大幅度提高电池性能.
採用加熱噴霧製備擴散層的新方法,製備齣性能優良的膜電極,併組裝成單電池進行測試,對電池溫度和空氣流量兩箇電池運行參數進行研究.結果錶明:加熱噴霧法製備膜電極具有良好擴散層結構,穫得瞭優良的電池性能;在電池溫度為55℃、輸齣電壓為0.271 V時,電池輸齣電流密度和功率密度分彆達到瞭206.2 mA/cm~2和55.88 mW/cm~2.同時實驗還錶明,空氣最佳流量為670 mL/min,電池溫度的提高有利于電池反應的動力學,進而大幅度提高電池性能.
채용가열분무제비확산층적신방법,제비출성능우량적막전겁,병조장성단전지진행측시,대전지온도화공기류량량개전지운행삼수진행연구.결과표명:가열분무법제비막전겁구유량호확산층결구,획득료우량적전지성능;재전지온도위55℃、수출전압위0.271 V시,전지수출전류밀도화공솔밀도분별체도료206.2 mA/cm~2화55.88 mW/cm~2.동시실험환표명,공기최가류량위670 mL/min,전지온도적제고유리우전지반응적동역학,진이대폭도제고전지성능.
In this paper, the membrane electrode assembly was prepared by heated-spray method and a single direct methanol fuel cell system was assembled and tested. Electrochemical performance of DMFC in various technological parameters such as cell temperature and air flow rate was investigated by means of steady-state potentiostatic polarization under the ambient pressure. The experimental results show that MEA prepared by heated-spray method has excellent diffusion layer structure with good performance. The output current density and power density are 206.20 mA/cm~2 and 55.88 mW/cm~2 respectively with ambient air as cathode oxidant when the working temperature is 55 ℃ and the output voltage is 0.271 V. The two technological parameters have significantly affected the performance of a direct methanol fuel cell. The optimum technological parameters are air flow of 670 mL/min, and the cell performance rapidly increases with the rise of the cell temperature.