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US 2011/0034325 A1Published application
High performance orr (oxygen reduction reaction) pgm (pt group metal) free catalyst
AssigneeActa S.P.A.
InventorsStefano Catanorchi, Michele Piana
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Abstract
Herein are disclosed PGM-free catalysts, made starting from transition metal phthalocyanine complexes, useful for catalytic ORR, and more particularly, alcohol tolerant catalysts as cathode material for ORR in alkaline and acid medium, characterized by low hydrogen peroxide generation and having better performance, stability and activity.
Claims20
1-15. (canceled)
A catalyst material obtained by heat treating blends comprising:
- a) a Fe phthalocyanine (PC) of formula (I)
- wherein
- M is Fe2+, Fe3+
- R is hydrogen or an electron-withdrawing substituent;
- wherein when M=Fe3+ a counterion X− is present;
- b) a transition metal phthalocyanine (Metal-PC) of formula (II)
- wherein
- M′ is Cu2− or Co2+
- R′, independently from R is hydrogen or an electron withdrawing substituent;
- c) a compound containing nitrogen and sulfur;
- d) an electronic conducting porous carbon material.
8 more elements
Dependencies are inferred from the claim text.