Homogeneously dispersed multimetal oxy-hydroxide catalysts

A substantially homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein

• M represents at least two elements, comprising
• at least one metal being from a first class of metals which includes Ni, Fe and Co, and
• at least one metal or non-metal which are structurally dissimilar to the metal in the first class, the at least one metal being from a second class of metals which are structurally dissimilar to the metals in the first class and includes W, Mo, Mg, Ba, Sb, Bi, Sn, Ce, Pb, Ir and Re, and the non-metal being one of B and P,
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said at least one metal from the first class of metals is connected to said at least one metal-through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

A homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein

• M represents at least two elements with at least one of them being structurally dissimilar to the other element, said elements comprising:
• a first metal being iron (Fe),
• a second metal being one or both of cobalt (Co) and nickel (Ni), and
• when the second metal is cobalt, including at least a third element M3 which is any one or combination of tungsten (W), molybdenum (Mo), and tin (Sn);
• when the second metal is nickel, including the third element M3 which is any one of antimony (Sb), rhenium (Re), iridium (Ir), magnesium (Mg), boron (B) and phosphorus (P);
• and
• when the second metal is both cobalt (Co) and nickel (Ni), including the third element M3 which is at least one of boron (B) and phosphorus (P),
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said first metal is connected to said second metal or said third element through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

An oxygen evolution electrode, comprising:

• a) a conductive substrate;
• and
• b) a homogeneously dispersed multimetal oxy-hydroxide catalyst coated on said conductive substrate, said homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein
• M represents multimetals comprising at least iron (Fe), cobalt (Co) and tungsten (W), a ratio of the Fe:Co:W being about 1:X:Y, where X ranges from about 0.1 to about 10, Y ranges from about 0.001 to about 10,
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said iron (Fe), cobalt (Co) and tungsten (W) are connected to each other through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

An oxygen evolution electrode, comprising:

• a) a conductive substrate;
• and
• b) a homogeneously dispersed multimetal oxy-hydroxide catalyst coated on said conductive substrate, said homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein
• M represents multimetals comprising at least iron (Fe), cobalt (Co) and molybdenum (Mo), a ratio of the Fe:Co:Mo being about 1:X:Y, where X ranges from about 0.1 to about 10, and Y ranges from about 0.001 to about 10,
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said iron (Fe), cobalt (Co) and molybdenum (Mo) are connected to each other through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

An oxygen evolution electrode, comprising:

• a) a conductive substrate;
• and
• b) a homogeneously dispersed multimetal oxy-hydroxide catalyst coated on said conductive substrate, said homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein
• M represents multimetals comprising at least iron (Fe), cobalt (Co), nickel (Ni), and phosphorus (P), a ratio of the Fe:Co:Ni:P being about 1:X:Y:Z, where X ranges from about 0.1 to about 10, Y ranges from about 1 to about 100, and Z ranges from about 0.001 to about 10
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said iron (Fe), cobalt (Co), nickel (Ni), and phosphorus (P) are connected to each other through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

An oxygen evolution electrode, comprising:

• a) a conductive substrate;
• and
• b) a homogeneously dispersed multimetal oxy-hydroxide catalyst coated on said conductive substrate, said homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein
• M represents multimetals comprising at least iron (Fe), cobalt (Co), nickel (Ni), and boron (B), a ratio of the Fe:Co:Ni:B being about 1:X:Y:Z, where X ranges from about 0.1 to about 10, Y ranges from about 1 to about 100, and Z ranges from about 0.001 to about 10,
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said iron (Fe), cobalt (Co), nickel (Ni), and boron (B) are connected to each other through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.

An oxygen evolution electrode, comprising:

• a) a conductive substrate;
• and
• b) a homogeneously dispersed multimetal oxy-hydroxide catalyst coated on said conductive substrate, said homogeneously dispersed multimetal oxy-hydroxide catalyst having the general formula of M(Ox(OH)2(1-x))n, wherein
• M represents multimetals comprising at least iron (Fe), nickel (Ni), and magnesium (Mg), a ratio of the Fe:Ni:Mg being about 1:X:Y, where X ranges from about 1 to about 100, and Y ranges from about 0.001 to about 10,
• x ranges between 0 and 1, and
• n is the metal valence;
• wherein said iron (Fe), nickel (Ni), and magnesium (Mg) are connected to each other through a bridging oxygen or hydroxide, and wherein the multimetal oxy-hydroxide catalyst is characterized by being amorphous on both surface and bulk of the catalyst.