Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA.
Nanotechnology. 2012 Jul 27;23(29):294013. doi: 10.1088/0957-4484/23/29/294013. Epub 2012 Jun 28.
The power densities of microbial fuel cells with yeast cells as the anode catalyst were significantly increased by immobilizing the yeast in electrically conductive alginate electrodes. The peak power densities measured as a function of the electrical conductivity of the immobilized electrodes show that although power increases with rising electrical conductivity, it tends to saturate beyond a certain point. Changing the pH of the anode compartment at that point seems to further increase the power density, suggesting that proton transport limitations and not electrical conductivity will limit the power density from electrically conductive immobilized anodes.
通过将酵母固定在导电海藻酸盐电极中，显著提高了以酵母细胞作为阳极催化剂的微生物燃料电池的功率密度。测量的峰值功率密度与固定电极的电导率的关系表明，尽管功率随电导率的升高而增加，但在一定程度后趋于饱和。在该点改变阳极室的 pH 值似乎进一步提高了功率密度，这表明质子传输限制而不是电导率将限制导电固定阳极的功率密度。
