Effect of Tin Ion Additive on Zinc Electrode in Alkaline Solution

摘要

Co-deposition of zincate and tin ion on zinc electrode were conducted to investigate the effect of tin ion on electro-deposition of zincate. The results showed that the deposit morphology of zincate changed from dendrite to many small compact crystallites in a spongy array. With increasing tin ion additive, zinc dendrite was dramatically inhibited. The precise mechanism of inhibition was discussed. In addition to the deposition of tin on preferred growth sites blocking further zinc deposition, the high deposition over-potential on tin is an important factor.