论文部分内容阅读
用溶液共沉淀法合成的比表面高、导电性良好的焦绿石型复合氧化物(Pb_2[Ru_(2-s-y)Sb_(?)Pb_(?)]-O_(7-s)),是一种富Pb的氧化物。其良好的导电性来源于Pb、Ru价态的可变性和多种价态的共存。用这种材料制成的多孔电极上得到的氧还原、氧析出稳态极化曲线及寿命实验结果表明,室温下这种氧化物在KOH溶液中,对氧还原及氧析出均具有很好的电催化活性和稳定性。
The pyrochlore composite oxide (Pb_2 [Ru_ (2-sy) Sb_ (?) Pb_ (O)] - O_ (7-s) with high specific surface and good conductivity synthesized by solution coprecipitation method is a Pb-rich oxide. Its good electrical conductivity comes from the variability of the valence states of Pb and Ru and the coexistence of various valence states. Oxygen reduction and oxygen evolution steady-state polarization curves obtained from the porous electrodes made of this material and the experimental results of their lifetime show that at room temperature, this oxide has good oxygen reduction and oxygen evolution in KOH solution Electrocatalytic activity and stability.