中文摘要：

直接甲醇燃料电池的阳极采用甲醇作为燃料,阴极采用纯氧或空气作为氧化剂,具有能量密度高、燃料储存方便、结构简单的优点,有望成为下一代小型电子设备的电源。反应物的浓度对直接甲醇燃料电池的性能、效率和燃料利用率等都有很大的影响,因此对燃料电池中反应物的浓度进行准确测量至关重要。本文综述了直接甲醇燃料电池中反应物浓度的测量方法,主要包括化学测量方法和物理测量方法,并对这些测量方法的优缺点、基本原理及适用范围进行了分析和评述。

英文摘要：

Direct methanol fuel cells（DMFCs）are one of the most promising candidates for the next generation power sources in miniature electronic devices due to their high energy density,convenient storage of fuel,simple structure.DMFCs use methanol as fuel at anode and oxygen or air as oxidant at cathode,and these reactants are consumed at porous electrode by electrochemical reactions which lead to their concentration fluctuation and cell performance variation.So,adequate detection of the reactant concentration is necessary for operating DMFC systems,because they have important influence on the performance,efficiency and fuel utilization.In this paper the methods for measurement of reactants concentration in the DMFC are reviewed,and can be generally classified into physical and chemical two groups.Comments and analysis are given on their basic principles and application range as well as their merits and demerits.