Ni-Doped Carbons as a Carbon Support for Metal Hydride Electrodes

Abstract

In-lab synthesized Ni-doped carbon xerogels were used as a carbon support to study the possibility to improve the electrochemical behavior of AB5-type alloy electrodes for nickel/metal hydride rechargeable batteries. The carbons used for this work were synthesized by polymerization of resorcinol and formaldehyde. These carbon supports were mixed with an AB5-type alloy. For the electrochemical characterization of the electrodes, charge and discharge techniques, a high rate of discharge, and electrochemical impedance spectroscopy were used. Results show that this kind of carbon could be used as a support for hydrogen storage electrodes with good electrochemical behavior and kinetic response.