KOH溶液中添加剂影响锌电化学性能的研究  

Effect of additives on electrochemical behaviors of Zn in KOH solution

作　　者：林海斌[1] 洪淑娜[1] 梁曼[1,2] 周合兵[2,3] 李伟善[1,2] 

机构地区：[1]华南师范大学化学与环境学院,广东广州510006 [2]广东高校电化学储能与发电技术重点实验室,广东广州510006 [3]华南理工大学材料科学与工程学院,广东广州510641

出　　处：《电源技术》2011年第10期1227-1230,共4页Chinese Journal of Power Sources

基　　金：国家大学生创新性实验计划项目(101057408);广东省大学生创新性实验计划项目(1057410018)

摘　　要：采用电化学方法、扫描电镜以及组装实体电池放电测试等方法研究了硝酸铋[Bi(NO3)3]、十二烷基苯磺酸钠(SDBS)及由两者组成的复合添加剂对锌在3 mol/L KOH溶液中的电化学性能的影响,结果表明:所研究的添加剂均具有一定的缓蚀作用,但与单一添加剂相比,复合添加剂的缓蚀效率更高,这归因于复合添加剂之间的协同作用。这种协同作用表现在有硝酸铋存在的情况下,铋置换锌而覆盖在其表面,强化十二烷基苯磺酸根在锌表面的吸附,两者能发挥自身的优势,弥补对方的不足,提高缓蚀效率。The electrochemical behaviors of Zn in 3 mol/L KOH solution containing different inhibitors were investigated by electrochemistry methods, scanning electron microscope and discharge of self-assembled batteries. The results show that either the individual additive or the composite additives can suppress the corrosion of zinc in 3 mol/L KOH solution. But the inhibition efficiency of the composite additives is higher than that of any individual additive because of the synergistic effect between sodium dodecyl benzene sulfonate （SDBS） and Bi （NO3）3. The effect can be carried out by increasing the adsorption of SDBS on the surface of zinc in the present of Bi （NO3）3. Furthermore, SDBS and Bi （NO3）3can bring into play their own advantages and make up the disadvantages of the each other in structure.

关 键 词：添加剂 锌 缓蚀作用 协同效应 

分 类 号：TM911.14[电气工程—电力电子与电力传动]