Viability of MCM-41 Inorganic Membrane Separator in Secondary Nickel-Zinc Cell

Monday, 27 July 2015
Hall 2 (Scottish Exhibition and Conference Centre)
S. R. Meskon, R. Othman, and M. H. Ani (International Islamic University Malaysia)
The viability of MCM-41 inorganic membrane as a separator material in secondary nickel-zinc cell is investigated. MCM-41 mesoporous material consists of arrays of hexagonal nano-channels. The membrane is synthesized by dip-coating procedures from parent solution comprising of quarternary ammonium surfactant, cethyltrimethylammonium bromide C16H33(CH3)3NBr (CTAB), hydrochloric acid (HCl), deionized water (H2O), ethanol (C2H5OH), and tetraethylortosilicate (TEOS). Both the anodic zinc foil and cathodic nickel hydroxide electrodeposited film are coated with MCM-41 membrane. The Ni/MCM-41/Zn alkaline cell is then subjected to 100-cycle durability test. The charge-discharge plot showed typical secondary zinc anode profile – rapid capacity fading. X-ray diffraction analysis on the dismantled cell indicated the transformation of MCM-41 hexagonal matrix structure into MCM-50 lamellar gel form which prevent the mesoporous cell separator from diminished in the caustic alkaline surround.