Figure 1: Field-induced water electrolysis switches an oxide semiconductor from an insulator to a metal. | Nature Communications

Figure 1: Field-induced water electrolysis switches an oxide semiconductor from an insulator to a metal.

From: Field-induced water electrolysis switches an oxide semiconductor from an insulator to a metal

Figure 1

(a) Simple water electrolysis with two Pt electrodes as the cathode and anode immersed in water. H+ and OH− ions, which are generated by the electrolysis, become H2 and O2 gases on the anode and cathode, respectively. (b) Water electrolysis with an insulating oxide MOx, with a slightly conductive surface MOx–δ. Similar to a, H+/OH− ions are attracted to the MOx–−δ, leading to the redox reaction between H+/OH− ions and the MOx–δ surface. GND, ground.

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