Additive having a pervoskite compound for a polymer electrolyte membrane fuel cell and a polymer electrolyte membrane fuel cell including same
Disclosed are an additive for a polymer electrolyte membrane fuel cell and a polymer electrolyte membrane fuel cell including the additive. The additive may include a carbon material having a predetermined shape and a perovskite compound having the formula Ce(Zr x Ti 1-x )O 3 , wherein x satisfies 0<x<1, and wherein the perovskite compound is deposited on the carbon material.
1 . A polymer electrolyte membrane fuel cell comprising:
an electrolyte membrane;
a cathode disposed on a surface of the electrolyte membrane; and
an anode disposed on an opposite surface of the electrolyte membrane,
wherein at least one of the electrolyte membrane, the cathode, the anode, or a combination thereof comprises an additive,
wherein the additive comprises a perovskite compound represented by Ce(Zr x Ti 1-x )O 3 , wherein x satisfies 0<x<1, and the additive further comprises a carbon material having a predetermined shape, and
wherein the perovskite compound is deposited on the carbon material.
2 . The polymer electrolyte membrane fuel cell of claim 1 , wherein the carbon material comprises a spherical carbon material, a fibrous carbon material, or a combination thereof.
3 . The polymer electrolyte membrane fuel cell of claim 1 , wherein the perovskite compound has a peak at a (110) plane, a peak at a (112) plane, a peak at a (200) plane, a peak at a (122) plane, and a peak at a (220) plane as measured by X-ray diffraction (XRD).
4 . The polymer electrolyte membrane fuel cell of claim 3 , wherein the peak at the (110) plane of the perovskite compound is downshifted compared to that of a compound in which zirconium (Zr) is not substituted.
5 . The polymer electrolyte membrane fuel cell of claim 1 , wherein the electrolyte membrane comprises 98% by weight to 99.5% by weight of an ionomer and 0.5% by weight to 2% by weight of the additive.
6 . The polymer electrolyte membrane fuel cell of claim 1 , wherein the at least one of the electrolyte membrane, the cathode, the anode, or a combination thereof comprising the additive is the cathode, and
wherein the cathode comprises:
a catalyst in which an active metal is supported on a support;
an ionomer; and
the additive.