یرتاب یلم شیامه نیمود ناریا
Microwave assisted air cathode for Zinc Air battery
M. S. Rahmanifara*
a Faculty of Basic Science, Shahed University, Tehran, IRAN P.O. Box: 18151/159
[email protected], [email protected]
Oxygen reduction reaction has technological importance in the development of electrochemical devices such as Zn-Air batteries, Fuel cells and etc. The slow kinetics of oxygen reduction reaction under experimental conditions causes the deterioration of performance of the devices. In order to improve the performance with enhanced kinetics, a better electrocatalyst is necessary. For the catalyst synthesis microwave irradiation has been widely used due to its advantage of high heating efficiency [1-2]. In this work, a simple, microwave-assisted heating method has been developed to embed Ag on the surface of carbon cloth in different condition for use as Zn-Air battery cathode.
For this purpose, at first carbon cloth was functionalized in acid, base and neutral medium by means of microwave irradiation, then a microwave-assisted reduction method used to deposition of Ag catalysts onto functionalize carbon cloth. At the end, as prepared gas diffusion electrode used as cathode electrode in Zn-Air battery. The constant current discharge results of constructed batteries showed that discharge capacity of Zn-Air battery at 10 mA/cm2 were 100, 70 and 40 mAh for functionalize carbon cloth in the presence of H2SO4, HNO3 and neutral medium respectively.
References
[1] Srinivasan Harish, Stève Baranton, Christophe Coutanceau, James Joseph, Journal of Power Sources, 214 (2012) 33-39.
[2] Gang Liu, Huamin Zhang, Jingwei Hu, Electrochemistry Communications, 9 (2007) 2643–2648.
