科研之友
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摘要
A 1 cm(2) constant flow glucose-oxygen fuel cell has been demonstrated using noble metal catalysis. The fuel cell is based on Pt-RuO(2) anode catalysts and Pt cathode. Operation of this cell under various concentrations of glucose has revealed the presence of a region of the polarization curve in which additional polarization leads to a decrease in current rather than the expected increase. We postulate that the appearance of this polarization loss is due to the adsorption of by-product lactones to the Pt-RuO(2) surface which is not desorbed under normal operating conditions, but instead decreases the number of catalytic sites over time, resulting in lower currents.
- 出版日期2010
