Pt/Ceo2/ Electroconductive Carbon Nano-Hetero Anode Material and Production Method Thereof

A production method of a polymer fuel cell-oriented Pt/CeO2/electroconductive carbon type nano-hetero anode material characterized in that the method comprises the steps of:

• in order to attain the nano-hetero anode material having a composition formula:
• X*Pt/Y*CeO2/Z*CARBON
• (where X, Y, and Z are content ratios by weight of platinum Pt, CeO2, and CARBON;
• 0.1≦X≦0.4, 0.1≦Y≦0.4, and Z=1-X—Y;
• and CARBON represents electroconductive carbon);
• firstly preparing a cerium nitrate water solution (having a concentration between 0.5 mole/liter (M) inclusive and 3 mole/liter (M) inclusive), and dropping the water solution into an ammonium carbonate or ammonium hydrogencarbonate water solution (having a concentration between 0.5 mole/liter (M) inclusive and 9 mole/liter (M) inclusive, in either case) heated to a temperature between 50° C. inclusive and 80° C. inclusive, to prepare ceria precursors in the mixed water solution;
• holding the mixed water solution for a period of time between 30 minutes inclusive and 48 hours inclusive to separate a ceria precursor powder as solid from liquid, washing the ceria precursor powder in water and then drying it, and calcining the ceria precursor powder at a temperature between 400° C. inclusive and 900° C. inclusive in circulation of oxygen to prepare a crystalline ceria nano-powder;
• and
• mixing the obtained ceria nano-powder with a chloroplatinic acid (H2PtCl6.6H2O) water solution (having a concentration between 0.05 mole/liter (M) inclusive and 1 mole/liter (M) inclusive) and an electroconductive carbon fine powder, drying the mixture by evaporating the solvent in the mixture in circulation of inert gas to obtain a product, and calcining the product at a temperature between 300° C. inclusive and 500° C. inclusive in circulation of hydrogen.

A production method of a polymer fuel cell-oriented Pt/CeO2/electroconductive carbon type nano-hetero anode material characterized in that the method comprises the steps of:

• in order to attain the nano-hetero anode material having a composition formula:
• X*Pt/Y*CeO2/Z*CARBON
• (where X, Y, and Z are content ratios by weight of platinum Pt, CeO2, and CARBON;
• 0.1≦X≦0.4, 0.1≦Y≦0.4, and Z=1-X—Y;
• and CARBON represents electroconductive carbon);
• firstly preparing a cerium nitrate water solution (having a concentration between 0.5 mole/liter (M) inclusive and 3 mole/liter (M) inclusive), and dropping the water solution into an ammonium carbonate or ammonium hydrogencarbonate water solution (having a concentration between 0.5 mole/liter (M) inclusive and 9 mole/liter (M) inclusive, in either case) heated to a temperature between 50° C. inclusive and 80° C. inclusive, to prepare ceria precursors in the mixed water solution;
• holding the mixed water solution for a period of time between 30 minutes inclusive and 48 hours inclusive to separate a ceria precursor powder as solid from liquid, washing the ceria precursor powder in water and then drying it, heat treating the ceria precursor powder within a temperature range between 150° C. inclusive and 300° C. inclusive for a period of time between 1 hour inclusive and 20 hours inclusive, and calcining the heat-treated powder at a temperature between 400° C. inclusive and 900° C. inclusive in circulation of oxygen to prepare a crystalline ceria nano-powder;
• and
• mixing the obtained ceria powder with platinum and an electroconductive carbon fine powder, to lower an onset potential in an anode reaction.