葡萄糖对铝合金电极电化学活性及自腐蚀的影响  

Effects of Glucose on Electrochemical Activity and Self-corrosion of Aluminum Alloy Anode

作　　者：霍佳磊 王为[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《中国表面工程》2016年第2期37-42,共6页China Surface Engineering

摘　　要：针对铝-空气电池放电时铝合金阳极自腐蚀严重的问题,利用失重法、线性扫描伏安法等电化学方法研究了葡萄糖作为铝合金阳极缓蚀剂的缓蚀效果,以及葡萄糖对铝合金阳极电化学性能、空气电极电化学性能的影响,并利用XRD及金相组织形貌对放电后的铝合金阳极表面进行葡萄糖的缓蚀机理分析。结果表明,添加葡萄糖能够使铝合金阳极利用率由45%提高至90%,能适当提高铝合金阳极的电流密度约12 mA/cm2,且几乎不影响空气阴极的电化学性能。XRD及金相组织表明,添加葡萄糖能够促使铝合金阳极表面放电过程中产生的氢氧化铝脱落而使铝合金表面光滑平整。A new corrosion inhibitor was developed to solve the self corrosion problem of the aluminum alloy anode during discharging.Methods such as weight loss method,linear sweep voltammetry were used to study the inhibition performance of glucose.In order to study the inhibition mechanism of glucose,the surface of the aluminum alloy anode after discharging was analyzed by XRD and metallograph.The results show that the addition of glucose in the electrolytecan increase the utilization ratio of aluminum alloy anode from 45% up to 90%,and the current density of the aluminum alloy anode is increased by 12mA/cm2.It is also proved that the addition of glucose in the electrolyte has no influence on the air cathode.XRD and metallograph show that the addition of glucosein the electrolyte helps make the surface of the aluminum alloy anode smooth by stimulating the shedding of the aluminum hydroxide on the anode while discharging.

关 键 词：葡萄糖 缓蚀剂 铝阳极 铝-空气电池 

分 类 号：TG174.36[金属学及工艺—金属表面处理]