微生物燃料电池的热力学研究

主要从热力学方面研究微生物燃料电池的特性.研究发现:微生物燃料电池中葡萄糖的氧化是一个放热的熵增反应,能够自发进行.在标准状态条件下,最大发电量为2840kJ/mol;可逆电压为1.227V,其中阴极反应的可逆电压为1.229V,阳极反应的可逆电压为-0.002V.在压强不变的条件下,可逆电压与温度成线性变化关系,但变化幅度不大;在温度不变的条件下,压强与可逆电压无关;浓度对可逆电压的影响由能斯特方程来描述.

Thermodynamics Research of Microbial Fuel Cell

In this paper,mainly research the characteristics of microbial fuel cells from thermodynamic. And find that the oxidation of glucose in microbial fuel cell is an exothermic entropy-increased reaction that can be carried out spontaneously. In the state of the standard conditions,the maximum capacity is 2 840 kJ/mol;Reversible voltage is 1.227 V,in which reversible voltage of cathode reaction is 1.229 V,reversible voltage of anode reaction of-0.002 V. In the same pressure conditions,the reversible voltage and temperature changes are in a linear relationship,but the rate of change is very small;In the same temperature conditions,the pressure has nothing to do with reversible voltage;The relationship of concentration and reversible voltage is described by Nernst equation.