【摘要】 用电沉积方法制备了镍 -磷 -二氧化锆复合电极。通过阴极极化曲线、交流阻抗等电化学技术研究其析氢催化性能 ,并用扫描电镜观察电极的表面形貌。实验结果表明 ,在 80℃、2 5%氢氧化钠碱性溶液中镍 -磷 -二氧化锆的表观交换电流密度及表面粗糙度皆大于镍、镍 -磷电极 ,而反应电阻较小。说明镍 -磷中引入二氧化锆所形成的复合镀层具有较高的析氢催化活性和良好的电化学稳定性更多还原

【Abstract】 Composite electrode nickel-phosphorus-zirconium dioxide was prepared by electrodeposition. Its property of electrochemical catalyzed hydrogen evolution has been studied by means of cathodic polarization curves, A. C. impedance technique, and its surface morphology was observed with SEM. Testing at 80℃ in 25% sodium hydroxide solution, its apparent exchange current density and surface roughness were higher, and reaction resistance lower than that of nickel and nickel-phosphorus electrode. The results show that addition of zirconium dioxide into nickel-phosphorus forms nickel-phosphorus-zirconium dioxide composite deposit which has better electrocatalytic activity and stability.更多还原