TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst material further comprises a carrier and a catalytic metal supported on the carrier. The carrier comprises at least one member selected from carbon powder, carbon black, acetylene black, ketjen black, activated carbon, carbon nanotubes, carbon nanofibers, carbon nanowires, carbon nanohorns, carbon aerogels, carbon cryogels, and carbon nanorings. The amount of the catalytic metal is 10-1000 parts by weight based on 100 parts by weight of the carrier. The inorganic oxide comprises at least one compound selected from silica (SiO2), titanium oxide (TiO2), and zinc oxide (ZnO2). Preferred Slurry: The catalyst slurry further comprises a solvent. The catalyst slurry further comprises phosphoric acid, where the amount of the phosphoric acid is 1-1000 parts by weight based on 100 parts by weight of the catalyst material.    TECHNOLOGY FOCUS - METALLURGY - Preferred Components: The catalytic metal comprises at least one member selected from platinum (Pt), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), copper (Cu), silver (Ag), gold (Au), tin (Sn), titanium (Ti), chromium (Cr) or their alloys. The catalyst material is an alloy of Pt and Co that is supported on carbon powder (PtCo/C).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The solvent comprises a water-based solvent. The water-based solvent is selected from water and alcohols. The alcohol is at least one of isopropyl alcohol (IPA) and ethanol. The amount of the water-based solvent is 100-2000 parts by weight based on 100 parts by weight of the catalyst material. The solvent further comprises an organic-based solvent. The organic-based solvent is at least one selected from N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide (DMAc), and N,N-dimethylformamide (DMF).    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The cellulose derivative comprises at least one compound selected from carboxymethyl cellulose (CMC), methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, and hydroxypropyl methyl cellulose. The organic polymer material comprises at least one compound selected from polyethylene oxide (PEO), polyvinyl alcohol (PVA), and styrene-butadiene rubber (SBR). The water-based binder comprises a polyethylene oxide (PEO)-silica (SiO2) composite. The amount of the water-based binder is 0.1-30 parts by weight based on 100 parts by weight of the catalyst material. EXAMPLE - Preparation of catalyst slurry was carried out as follows: PtCo/C (1 g), carboxymethyl cellulose (0.02 g), water (3 g), IPA (4 g), and 85 wt.% of an aqueous phosphoric acid solution (1 g) were mixed to prepare mixed solutions, and each mixed solution was then stirred at room temperature for 30 minutes to obtain a catalyst slurry. Preparation of electrode (A1) was carried out as follows: the above catalyst slurry was coated on carbon paper by using a wire bar and the coated carbon paper was then dried at 80 degrees C for 1 hour, at 120 degrees C for 30 minutes, and at 150 degrees C for 10 minutes to obtain an electrode. In this regard, the amount of Pt per unit area of the electrode (A1) was 0.8 mg. Manufacture of fuel cell (test) was carried out as follows: a fuel cell was manufactured using a cathode, an anode, and an electrolyte described below: cathode was formed by cutting the above electrode (A1) to a size of 3.2 cmx 3.2 cm and the cut electrode was used as a cathode. The anode was formed by using the electrode (A1) in the same manner as above, except that, in the preparation of the catalyst slurry, 1 g of PtRu/C, 0.02 g of polyvinylidene fluoride (PVDF), and 6.0 g of N-methyl-2-pyrrolidone (NMP) were used. The prepared electrode was cut to a size of 3.2 cmx 3.2 cm and the cut electrode was used as an anode. A polybenzimidazole membrane impregnated with 85 wt.% of an aqueous phosphoric acid solution was used as an electrolyte. Electrode (A2) was prepared in the same manner as in test except that in the preparation of the catalyst slurries, PtCo/C (1 g), polybenzimidazole (0.02 g), and N-methyl-2-pyrrolidone (NMP) (5 g) were used. The amount of Pt per unit area of each of the electrode (A2) was 0.8 mg. Subsequently, electrode (A2) was doped with 85 wt.% of an aqueous phosphoric acid solution. A fuel cell (control) was manufactured in the same manner as in test fuel cell by using the electrode (A2). The test/control cells were evaluated for cell performance. The performance of each fuel cell was evaluated at 150 degrees C by using non-humidified air as an oxidizer for the cathode and non-humidified hydrogen as a fuel for the anode. The evaluation was performed by raising the current density step by step from 0 to 0.5 A/cm2 and recording the corresponding operating voltages. The performance of the test fuel cell was higher than that of the control fuel cell.