中文摘要：

本文对三维阳极自呼吸微流体燃料电池进行了结构改进,缩短了微通道长度,减小了阴阳极间距,去除了隔离棒,利用阴极附近电解液的快速流动来减轻燃料渗透;研究了该电池的性能特性,考察了电解液浓度、甲酸浓度和反应物流量对电池性能的影响。实验结果表明,该电池性能随电解液及甲酸浓度的升高均先上升后下降,随反应物流量的升高先增加后趋于稳定。当电解液浓度为1.0 mol·L-1、甲酸浓度为0 5 mol·L-1、反应物流量为300μL·min-1时,电池的最高功率密度可达44.6 mW·cm-3,比相同体积、相同阳极有效面积的同类电池提高了107%,电池性能得到有效强化。

英文摘要：

A new air-breathing microfluidic fuel cell with three-dimensional anode was proposed by several structure improvements.The flow channel as well as the space between anode and cathode was reduced.Besides,the spacer rod was eliminated leading to mitigating fuel crossover by the rapid flow of electrolyte near the cathode.The cell performance was investigated under various concentrations of electrolyte and formic acid,and different flow rates of the reactant.The experiment results showed that with an increase in the concentration of electrolyte or formic acid,the cell performance increased at first and then decreased,while with increasing the flow rate of reactant.it increased to a high value and then remained almost the same.When the concentration of electrolyte was 1.0 mol·L-1,the fuel concentration was 0.5 mol·L-1 and the flow rate was 300 μL·min-1,the cell performance reached the optimal power density of 44.6 mW·cm-3,which increased by 107%compared with a similar fuel cell of the same volume and same anode area suggesting that the performance was enhanced effectively.