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US 12,763,340 B2Granted
Membrane electrode assembly catalyst material
AssigneeRobert Bosch GmbH
InventorsSoo Kim, Ulrich Berner, Charles Tuffile, Mordechai Kornbluth
Life of this patent
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Abstract
A catalyst for a membrane electron assembly (MEA) comprising: a ternary oxide material having at least one composition of formula (I): IrxM1-xO2 (I), where x is any number between about 0.25 and 0.75, and M is Ag, Au, Ba, Bi, Ca, Ce, Eu, Ge, Hf, La, Nd, Os, Pd, Pr, Re, Rh, Se, Sm, Tl, or W, the material being configured to catalyze oxygen evolution reaction (OER) and increase stability, activity, or both of the catalyst.
Claims18
A catalyst for a membrane electrode assembly (MBA) comprising:
- a ternary oxide material having at least one composition of formula (I):
- IrxM1-xO2 (I),
- where
- x is any number between about 0.25 and 0.75, and
- M is Ag, Au, Eu, Ge, Hf, Nd, Os, Pd, Pr, Re, Rh, Se, Sm, Ti, or W,
- the ternary material being configured to catalyze an oxygen evolution reaction (OER) in the MBA and to increase stability, activity, or both of the catalyst;
- and
- a quaternary oxide material having at least one composition of formula (II):
- IrxBiyMzO2 (II)
- where
- x, y, z is each individually and independently any number between about 0.25 and 0.75,
- x+y+z=1, and
- M is Ag, Au, Ba, Ca, Ce, Eu, Ge, Hf, La, Mo, Nb, Nd, Os, Pd, Pt, Pr, Re, Rh, Ru, Se, Sm, Ta, TI, Ti, W, or Zr,
- the quaternary material being configured to catalyze an oxygen evolution reaction (OER) and increase stability, activity, or both of the catalyst.
11 more elements
A membrane electrode assembly (MEA) comprising:
- an OER catalyst material having a first material including
- (a) a ternary oxide material having at least one composition of formula (I):
- IrxM1-xO2 (I),
- where
- x is any number between about 0.25-0.49 and 0.51-0.75;
- and
- M is Ag, Au, Ba, Ca, Eu, Ge, Hf, La, Nd, Os, Pd, Pr, Re, Rh, Se, Sm, Tl, or W, and
- (b) a quaternary oxide material having at least one composition of formula (II):
- IrxBiyMzO2 (II)
- where
- x, y, z is each individually and independently any number between about 0.25 and 0.75, x+y+z=1, and
- Mis Ag, Au, Ba, Ca, Ce, Eu, Ge, Hf, La, Mo, Nb, Nd, Os, Pd, Pt, Pr, Re, Rh, Ru, Se, Sm, Ta, TI, Ti, W, or Zr,
- the material of the formulas (I) and (II) being configured to catalyze oxygen evolution reaction (OER) and increase stability, activity, or both of the catalyst.
10 more elements
Dependencies are inferred from the claim text.