| http://www.w3.org/ns/prov#value | - The heat exchanger, which is made mostly of aluminum, contains a network of thin fins that provide an efficient cooling path between the metal hydride and the coolant.This milestone paves the way for practical on-board hydrogen storage systems that can be charged multiple times in much the same way a gasoline tank is charged today, said a researcher at GM's Chemical & Environmental Sciences Labo
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