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Air electrodes are the key components of Electrochemical carbon dioxide concentrating(EDC) cells. Therefore, the improvement of the polarization performance is beneficial to the increasing of CO 2 transfer and cell stability .The preparing process of air electrode is improved by means of the pretreatment of active carbon(AC) and the selection of preparing method of platinum/carbon(Pt/C) powders. Besides, based on the analysis of orthogonal test results, the optimum preparing conditions of Pt/C powders in air electrode are achieved, that is, hydrazine hydrate concentration is 5%～10%, platinum capacity is 8mg/cm 2, chloroplatinic acid concentration is 10.0mg/ml and water both temperature is 40℃.
Air electrodes are the key components of Electrochemical carbon dioxide concentrating (EDC) cells. Thus, the improvement of the polarization performance is beneficial to the increasing of CO 2 transfer and cell stability. The preparation process of air electrode is improved by means of the pretreatment of active carbon (AC) and the selection of preparing method of platinum / carbon (Pt / C) powders. Further, based on the analysis of orthogonal test results, the optimum preparing conditions of Pt / C powders in air electrode are achieved that that is hydrazine hydrate concentration is 5% ~ 10%, platinum capacity is 8mg / cm 2, chloroplatinic acid concentration is 10.0mg / ml and water both temperature is 40 ℃.