Electrochemical window
Encyclopedia
The electrochemical window of a substance is the voltage range between which the substance doesn't get oxidized nor reduced
Redox
Redox reactions describe all chemical reactions in which atoms have their oxidation state changed....

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This range is important for the efficiency of an electrode, out of this range, water gets electrolysed, spoiling the electrical energy that is intended for another electrochemical reaction.

Materials

  • Platinum
    Platinum
    Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is derived from the Spanish term platina del Pinto, which is literally translated into "little silver of the Pinto River." It is a dense, malleable, ductile, precious, gray-white transition metal...

     (very expensive)
  • (boron
    Boron
    Boron is the chemical element with atomic number 5 and the chemical symbol B. Boron is a metalloid. Because boron is not produced by stellar nucleosynthesis, it is a low-abundance element in both the solar system and the Earth's crust. However, boron is concentrated on Earth by the...

    -)doped CVD diamond films on titanium
    Titanium
    Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....

     or niobium
    Niobium
    Niobium or columbium , is a chemical element with the symbol Nb and atomic number 41. It's a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite...

    : 3.5 - 1.5 V (undoped, diamond does not conduct electricity)
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