Electrocatalysts using porous polymers and method of preparation
A method of producing an electrocatalyst article using porous polymers. The method creates a porous polymer designed to receive transition metal groups disposed at ligation sites and activating the transition metals to form an electrocatalyst which can be used in a fuel cell. Electrocatalysts prepared by this method are also provided. A fuel cell which includes the electrocatalyst is also provided.
1. An electrocatalyst comprising:
a porous polymer having bipyridine monomers and stereo-contorted spirobifluorene monomers, wherein the porous polymer has a plurality of ligation sites associated with the bipyridine monomers and a plurality of pores formed by cross-linking of the stereo-contorted spirobifluorene;
a transition metal bound in the plurality of pores
the porous polymer having a carbonized framework;
wherein a plurality of catalytic site are uniformly distributed.
2. The electrocatalyst as defined in claim 1 wherein the transition metal is selected from the group of Co, Fe, Ni, Cr, Cu, Mn, Ta and W.
3. The electrocatalyst of claim 2 , wherein the bipyridine monomers are selected from the group of monomers consisting of:
4. The electrocatalyst of claim 2 , wherein the stereo-contorted spirobifluorene monomer are selected from the group of monomers consisting of: