Ionic transport has been studied extensively over the years for energy devices such as fuel cells and batteries using Li+, H+, Ag+, Cu+, F-, and O2-. Yet as researchers point out in a recent report, hydride ions (H-) may be particularly useful for high-energy-density storage and conversion devices. Using an oxyhydride solid state cell they have now demonstrated pure H- conduction in an oxide for the first time.
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