The Effect of Temperature on Electrochemical Codeposition of Mg-Ni Hydrogen Storage Alloys from Molten Salt System


Agaoglu G. , Orhan G.

146th TMS Annual Meeting and Exhibition / Symposium on Mechanical and Creep Behavior of Advanced Materials - A Structural-Materials-Division Symposium Honoring Prof. K. Linga Murty, California, Amerika Birleşik Devletleri, 26 Şubat - 02 Mart 2017, ss.657-663 identifier identifier

  • Cilt numarası:
  • Doi Numarası: 10.1007/978-3-319-51493-2_63
  • Basıldığı Şehir: California
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.657-663

Özet

A Mg-Ni hydrogen storage alloy was produced as a film by molten salts electrolysis and diffusion process. Mg and Ni was co-deposition on a nickel substrate from 20 wt% MgCl2 + 2 wt% NiCl2 and balans NaCl + KCl mixture. The electrodeposition was conducted at 700-750 degrees C and constant current density of 0.5 A cm(-2) for 60 min. The phase composition and microstructure of Mg-Ni alloy were detected by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrode performance in 6 M KOH solution were characterized by cyclic charge-discharge experiment. The best initial discharge capacity (375 mAhg(-1)) and acceptable capacity retaining rate (70%) were obtained at the 750 degrees C alloy.