Abstract
A solid oxide fuel cell unit is constructed with Ni–YSZ as the anode, YSZ as the electrolyte, and Cu-added La 0.8Sr 0.2MnO 3–Ce 0.9Gd 0.1O 1.95 as the cathode. Cu addition is done by impregnation and doping, respectively. It is found that zero NO x emissions can be achieved no matter how large the inlet NO concentration is in the simulated diesel exhaust. The major driving force for NO x conversion is not the electrical power. Cu addition by impregnation results in larger rate of NO decomposition than that by doping. At 600 °C, both NO and NO x conversions increase with increasing O 2 concentration from 6 to 14%. Lower temperature is beneficial for the NO x conversion. Both very low and very high NO concentrations are beneficial for the NO and NO x conversions.
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