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Paper Information

Journal:   NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)   FALL 2007 , Volume 26 , Number 3; Page(s) 37 To 49.
 
Paper: 

EFFECTS OF SN/ZN ALLOY ON CORROSION BEHAVIOR AND PERFORMANCES OF RECHARGEABLE ALKALINE BIPOLAR AND BUTTON BATTERIES

 
 
Author(s):  AGHA ZADEH MOSTAFA, JAFARI SEYED MAHMOUD, MAKHLOUGHI AZAD F., GHAEMI MAHDI*
 
* DEPARTMENT OF CHEMISTRY, FACULTY OF SCIENCES, GOLESTAN UNIVERSITY, GORGAN, I.R. IRAN
 
Abstract: 

Electrochemical studies of button type and rechargeable bipolar alkaline batteries have revealed that the main problem in achieving acceptable capacities and high number of charge/discharge cycling is the unsuitable anodic zinc composition. To overcome this, a special kind of electrolytic zinc was coated with tin/zinc alloy, which was employed in the zinc anode. For this purpose, a dual-bath technique was employed repeatedly via electrolytic precipitation of porous zinc and Sn/Zn alloy. Electrochemical impedance spectroscopy and cyclic voltammetric studies were carried out to investigate the electrochemical properties of the as-prepared materials.
In addition, the amount of hydrogen gas evolution was measured as a result of corrosion reactions. Results show the beneficial reversibility and enhanced electrochemical properties of doped zinc with Zn/Sn alloy compared to pure zinc powder. Results of laboratory test batteries have revealed that usage of modified anodic composition enhances the electrochemical features of button batteries and improves the cycle performance of rechargeable alkaline batteries.

 
Keyword(s): RECHARGEABLE BATTERIES, BIPOLAR ELECTRODES, BUTTON CELLS, ZINC CORROSION
 
References: 
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