Abstract
The AB5-type hydrogen storage alloy (MH alloy) could be deposited uniformly with Ni-PTFE composite layer using the electroplating method. The thickness of Ni-PTFE composite layer was controlled to 1–2μm and the Ni and PTFE amounts were 8wt.% and 2–4wt.%, respectively. The Ni-PTFE composite layer on MH alloy improved the electrochemical property, especially quick activation as well as the corrosion resistivity of an original MH alloy. Especially the PTFE particles in the Ni-PTFE composite layer play a role to create the interface reaction fields of three phases of hydrogen gas–alloy–electrolyte solution.
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