Au-MmNi_(3.2)Al_(0.2)Mn_(0.6)Co_(1.00)电极对NaBH_4电催化氧化

• 作 者: 王贵领 刘进程 孙克宁 曹殿学
• 机 构: 哈尔滨工业大学市政环境工程学院,哈尔滨工程大学材料科学与化学工程学院,
• 出 处: 电化学
• 发表日期: 2009年04期
• 关键词: 储氢合金 金改性 电催化氧化 电氧化 Mn NaBH_4 Al Au-MmNi Co 催化氧化性能

研究经NaOH处理了的MmNi3.2Al0.2Mn0.6Co1.0,再应用电沉积法制备Au改性的MmNi3.2Al0.2Mn0.6Co1.0催化剂对NaBH4的电催化氧化性能.SEM观察催化剂样品的微观形貌,线性伏安扫描法测定其电催化氧化性能,发现Au-MmNi3.2Al0.2Mn0.6Co1.0电极电催化氧化NaBH4电流密度为60 mA.cm-2,比在MmNi3.2Al0.2Mn0.6Co1.0电极的增加3.5倍.若对该电极在电解质中预浸泡10 h,则氧化电流密度可达到184 mA.cm-2.

The NaOH-treated MmNi3.2Al0.2Mn0.6Co1.0 was studied and the electrocatalytic oxidation of NaBH4 by Au-modified MmNi3.2Al0.2Mn0.6Co1.0 was also prepared by electrodeposition method. Microstructure of the catalyst samples was observed by SEM Morphology and linear voltammetry were used to measure the electrocatalytic oxidation properties of the Au-MmNi3.2Al0.2Mn0.6Co1.0 electrode. The current density of NaBH4 was 60 mA.cm-2, which was higher than that of MmNi3.2Al0.2Mn0. 6Co1.0 electrode increased 3.5 times.If the electrode pre-soaked in the electrolyte 10 h, the oxidation current density can reach 184 mA.cm-2.