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US 2025/0034730 A1Published application
Electrocatalysts for the oxygen evolution reaction in acid conditions
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsSiwen Wang, Chen Ling, Yui Wakabayashi, Honghong Lin, Li Q. Zhou, Charles Alexander Roberts, Hongfei Jia, Debasish Banerjee
Life of this patent
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Abstract
An electrocatalyst for the production of hydrogen from water includes a pyrochlore compound with a composition or chemical formula of RE2(Ru)2xM2-2xO7, RE2(Ir)2xM2-2xO7or RE2(Ir,Ru)2xM2-2xO7, where RE is a rare earth element, M is an alkali metal, alkaline carth metal, transition metal, post-transition metal, Ge, or Sb, and x is less than 1.0 and greater than 0.0.
Claims20
An electrocatalyst comprising:
- a pyrochlore compound selected from RE2(Ru)2xM2-2xO7, RE2(Ir)2xM2-2xO7 or RE2(Ir,Ru)2xM2-2xO7, where RE is a rare earth element, M is an alkali metal, alkaline earth metal, transition metal, post-transition metal, Ge, or Sb, and x is less than 1.0 and greater than 0.0.
An electrocatalyst comprising:
- a pyrochlore compound selected from RE2(Ru)2xM2-2xO7, RE2(Ir)2xM2-2xO7 or RE2(Ir,Ru)2xM2-2xO7, where x is less than or equal to 0.95 and greater than or equal 0.0, and RE is a rare earth element and M is at least one of an alkali metal, alkaline earth metal, transition metal, post-transition metal, Ge, or Sb selected, respectively, from the group consisting of Dy and Al, Dy and Mn, Er and Mn, Er and Sc, Eu and Zr, Ho and Bi, Ho and Sc, Ho and Sn, Nd and Ta, Pr and Ge, Y and Mo, Y and Sn, Y and Ti, Y and Re, and Y and Sb.
An electrocatalyst comprising:
- A pyrochlore compound selected from RE2(Ru)2xM2-2xO7, RE2(Ir)2xM2-2xO7 or RE2(Ir,Ru)2xM2-2xO7, where x is less than or equal to 0.9 and greater than or equal 0.0, and RE is a rare earth element and M is at least one of an alkali metal, alkaline earth metal, transition metal, post-transition metal, Ge, or Sb selected, respectively, from the group consisting of Ho and Al, Ho and Ga, Nd and Al, Nd and Cr, Nd and Hf, Nd and K, Nd and Mo, Nd and Sc, Nd and Ti, Nd and Zr, Sm and Mn, Sm and Sc, SM and Sn, Sm and Zr Tb and Zr, Y and Fe, Y and Ga, Y and Ge, Y and Hf, Y and Mn, Yb and Hf, Yb and Mo, and Yb and Ti.
Dependencies are inferred from the claim text.