Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery》.pdf

Chemical Engineering Journal 281 (2015) 368–378 Contents lists available at ScienceDirect Chemical Engineering Journal journal homepage: www.else /locate/cej Implementation of stable electrochemical performance using a Fe0.01ZnO anodic material in alkaline Ni–Zn redox battery Byeong Sub Kwak a, Dong Young Kim a, Sang Sun Park b, Bum Soo Kim b, Misook Kang a,⇑ a Department of Chemistry, College of Science, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea b Research Development Center, VITZROCELL Co., Chusa-ro 235-35, Sinam-myun, Yesan-gun, Chungnam 340-860, Republic of Korea h i g h l i g h t s Nanostructured Ni–ZnO and Ni–Fe0.01ZnO electrodes were fabricated for a redox battery. 2+ 0 The Ni–Fe0.01Zn showed a reducible CV potential for Zn M Zn . Cell capacity of a Ni–Fe0.01Zn battery was more than 200 mA h g1 for 70th-cycle. Cell capacity of the Ni–Fe0.01Zn battery was enhanced to 230 mA h g1 at 30 mA cm2. Fewer ZnO dendrites were grown over the Ni foam in the Ni–Fe0.01Zn battery. a r t i c l e i n f o a b s t r a c t Article history: Nanometer sized ZnO and Fe0.01ZnO materials are synthesized by modified sol gel method to improve Received 6 March 2015 electrochemical performance of alkaline Ni–Zn batteries. The samples have been characterized and tested Received in revised form 11 June 2015 using X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spec- Accepted 12 June 2015 troscopy (EDX), zeta potentials, cyclic voltammetry (CV) and g