Characterization of AB5-Type Metal Hydride Modified by Electroless Plating Nickel

Wu Tsan Wu; Jing Shan Do

doi:10.4028/www.scientific.net/AMR.557-559.1988

Paper Titles

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Energy Storage of NiO/TiO₂ Bilayer Films and its Effectiveness in the Degradation of Acid Orange 7
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Characterization of AB₅-Type Metal Hydride Modified by Electroless Plating Nickel

Abstract:

The charge/discharge properties of commercial metal hydride alloy powder (MmNi_3.81Mn_0.41Al_0.19Co_0.76) is improved and modified by electroless plating nickel. The effect of concentration of reducing agent (Cr), concentration of complex agent (C_c), reaction temperature (T), reaction time (t), and the amounts of MH powder per volume (CMH) on the utilization of the modified MH alloy used as the negative electrode of Ni/MH battery is systematically studied. The utilization of modified MH alloy is mainly affected by Cr, Cc and t. The utilizations of MH alloys modified with condtions of T = 70 oC, t = 90 min, Cr = 20 g l^-1, Cc = 20 g l^-1 and CMH = 20 g l^-1, respectively, are obtained to be 92.3, 64.7 and 23.6% at discharging rate of 1, 4, and 10 C. The utilizations of modified MH alloy are increased by 15.5, 45.6 and 19.8% compared with the pristine MH alloy for discharging rates of 1, 4 and 10 C, respectively.