以氯铱酸为主要的前驱体,采用加热分解法制备了不同Ru含量的Ir_(1-x)Ru_xO_2/Ti析氧阳极,并采用扫描电镜,循环伏安,恒电流电解,线性极化等测试手段对电极进行表征和测试.电化学测试结果表明当Ir,Ru的摩尔比为3:2时,500 mA·cm_(-2)恒电流水解电位最低,为1.4 V(vs.SCE);循环伏安测试表明,Ir_(0.6)Ru_(0.4)O_2/Ti的伏安电量亦达到最高,达到1271 mC·cm_(-2),析氧电催化活性点最多.SEM表面形貌进一步证实了Ru的加入使得电极的表面的多孔结构更加明显,当Ir,Ru摩尔比为3:2时,电极表面颗粒最小,孔隙率最高,亦表明该电极的电化学活性表面积最大,电催化活性最高.
Ir_(1-x)Ru_xO_2/Ti anodes with different content of Ru prepared by thermo-decomposition using ethanol and isopropanol mixed solution of chloroiridic acid(H_2IrCl_6)and ruthenium chloride(RuCl_3)were characterized by SEM and investigated by cyclic voham-merry,charonopotentiometry,liner polarization.The electrochemical tests indicated that the potential with the electrolysis current of surface of the anode.The pictures of 500 mA·cm_(-2) was only 1.4 V (vs.SEM) corresponding to the electrode with metal content of 40% Ru;cyclic voltammetry test indicated that q of Ir_(0.6)Ru_(0.4)O_2/Ti anode reached the maxmum value of 1271 mC·cm_(-2),which existed a maximum of active points on the surface of the anode.The pictures of SEM also showed the most significant porous morphology of crystallite grains packing and cracks on the surface of anode corresponding to the electrode with metal content of 40% Ru,which coincided with the electrochemical test result.
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