Provided is a fuel cell catalyst composition comprising a C12A7:X.sup.− inorganic material having a structure in which oxygen anions of C12A7 are replaced by halogen (X) anions, or comprising a C12A7:X.sup.−-based inorganic material which is a C12A7:X.sup.− partially converted to electride. A fuel cell comprising the fuel cell catalyst composition in a catalyst layer is also provided. Also provided is a method of producing a fuel cell catalyst composition, comprising a step of heat-treating C12A7:X.sup.− at temperature of 1000-1300° C. for at least 20 hours under a nitrogen atmosphere.

The present invention relates to a multi-component resin system comprising (i) at least one resin component (A) comprising at least one curable epoxy resin and (ii) at least one curing agent component (B) comprising at least one primary alcohol and copper (II) tetrafluoroborate. The present invention further relates to the use of such a multi-component resin system for the chemical fastening of construction elements in holes (for example boreholes) or gaps, and the use as an adhesive or as a coating.