Measuring methods for dust resistivity with parallel electrodes 灰塵電阻率的測(cè)量方法
Special attention is paid to the consequences of methanol crossover in cathode reaction and cathode over - potential . good agreement is found between simulations and experiments in regard to the v - i character of dmfcs . based on the theory of parallel electrode reaction , it becomes possible to obtain quantitatively the value of over - potential caused by methanol crossover , which is either implicit or not included in the overall cathode over - potential in previous models 該模型涵蓋了dmfc中的主要物理化學(xué)過(guò)程,包括:甲醇水溶液在膜電極內(nèi)的擴(kuò)散、對(duì)流和電遷移;質(zhì)子在陽(yáng)極催化劑層和陰極催化劑層內(nèi)的傳遞;氧氣、水蒸汽在陰極的擴(kuò)散;陽(yáng)極催化劑層內(nèi)的甲醇氧化反應(yīng)動(dòng)力學(xué);以及陰極催化劑層內(nèi)的氧還原和甲醇氧化反應(yīng)動(dòng)力學(xué)。