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本文研究了以不同炭材料为载体的氧电极开路电位。用旋转电极测得氧还原表观交换电流;量气法测得金属氧化物催化剂分解H_2O_2速度常数,流动气相色谱法测得炭载体的BET表面积。实验结果表明,一定的炭载体比表面,团粒结构小的催化剂分解H_2O_2速度常数大,催化剂与载体混合均匀,所得氧电极的开路电位越正。
In this paper, we studied the open circuit potential of oxygen electrode with different carbon materials. The apparent exchange current of oxygen reduction was measured by rotating electrode. The velocity constant of metal oxide catalyst was measured by the gas method and the BET surface area of the carbon carrier by flow gas chromatography. The experimental results show that a certain amount of carbon carrier has a larger specific surface area and a smaller size of the catalyst, which decomposes the H 2 O 2 rate constant and mixes the catalyst with the carrier uniformly. The more positive the open circuit potential of the obtained oxygen electrode is.