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Temperature, cycling, discharge current and self-discharge electrochemical studies to evaluate the performance of a pellet metal-hydride electrode |
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| Authors: | S. A. Gamboa P. J. Sebastian M. Geng D. O. Northwood |
| Affiliation: | a Solar Energy Laboratory, Photovoltaic Systems Group, Solar Hydrogen Fuel Cell, CIE-UNAM, Privada Xochicalco S/N 62580 Temixco, Morelos, Mexico b Mechanical & Materials Engineering, University of Windsor, Ont., Canada N9B 3P4 c Faculty of Engineering and Applied Science, Ryerson Polytechnic University, 350 Victoria St., Toronto, Ont., Canada M5B 2K3 |
| Abstract: | In this paper, we report electrochemical charge/discharge of hydrogen for a pellet metal-hydride electrode using an MmNi5−XMX alloy as active material. Strong dependence of temperature and discharge current was found for electrochemical applications. Pellet electrode showed good stability over 250 charge/discharge cycles. Self-discharge studies were carried out on completely charged electrode. The capacity of this electrode to absorb/desorb hydrogen could be defined as a stochastic function of some variables like temperature, cycling and discharge current conditions. More studies are in progress for calculating electrochemical parameters in these metal-hydride electrode systems. |
| Keywords: | Metal-hydride electrode Ni-MH battery Self-discharge MmNi5−XMX Electrochemical measurements |
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