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Citation: LI Jun-Hua, FEI Xi-Ming, XU Fang. Effect of Two Organic Additives on Tin Electrodeposition[J]. Chinese Journal of Applied Chemistry, ;2006, 23(9): 1042-1046. shu

Effect of Two Organic Additives on Tin Electrodeposition

1.
College of Chemistry, Central China Normal University, Wuhan 430079

Corresponding author: FEI Xi-Ming,
Received Date: 29 October 2005
Available Online: 29 January 2006

Effect of 2 organic additives,acetone and SN-A,on tin electrodeposition in acid solution was investigated by cyclic voltammetry,potential step,and AC impedance.The results show that the potential seperation between anodic and cathodic peaks in the electrodeposition of tin with the organic additives added reached up to 0.9 V,indicating that the electrode process was irreversible.In addition,an inductive current cycle appeared,which indicated the presence of nucleation.It was found that acetone and SN-A inhibited tin electrodeposition,leading to a more negative deposition potential of tin.The electrochemistry impedance R_ct of tin electrodeposition in the presence of acetone additive was 1.5×10⁴ Ω·cm²,which is much larger than that caused by SN-A additive.Acetone could also inhibit hydrogen evolution.The cathode overpotential of tin electrodeposition in the presence of the two organic additives increased 280 mV,which is benefical to the gloss of the tin layer.The I²/I_m²~t/t_m curves of tin electrodeposition was close to theoretical instantaneous nucleation curve.The electrocrystallization of tin in the presence of organic additives followed the mechanism of instantaneous nucleation and three dimensional growth.
- organic additive,
- electrodeposition,
- cyclic voltammogram,
- AC impedance
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Effect of Two Organic Additives on Tin Electrodeposition

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com