A+ A A-

ICPT-AP Requirements

Experimental

Materials and apparatus

  1. Solid Electrolyte: NafionTM NR212
  2. 2 Pumps for Hydrogen and Nitrogen. (T=100oC; flow rate= >30mL/min)
  3. Sensors 
    • 2 Temperature sensors 100oC
    • 2 Flow rate sensors
    • 2 Pressure sensors (1 bar)
  4. Hydrogen Peroxide H2O2
  5. Sulfric acid H2SO4
  6. Nafion solution Nafion™ D520CS Alcohol based 1000 EW at 5% weight
  7. Nessler’s reagent
  8. HDV-7C transistor potentiostat
  9. pH meter
  10. 7230G visible spectrophotometer
  11. The corundum tube reactor and heated reactor with circulating water were made locally.
  12. Modified acrylate adhesive
  13. Electrodes: We need the following metals for the synthesis of the electrodes: Samarium, Iron,  Nickel, Copper, and Cerium.

Preparation of cathode and anode and assembly of the single cell

  1. Cathode

SmFe0.7Cu0.1Ni0.2 (SFCN)

Sm:      m= n*M = 1*150.36 = 150.36 g

Fe:       m= n*M = 0.7*55.845 = 39.1 g

Cu:      m= n*M = 0.1*63.546 = 6.3546 g

Ni:       m= n*M = 0.2*58.6934 = 11.73868 g

Total mass = 207.5 g

Metal

Melting point

%W

Density (g.cm-3)

Samarium

1072 oC

72.45

7.52

Iron

1538 oC

18.84

7.874

Copper

1085 oC

3.1

8.96

Nickel

1455 oC

5.66

8.902

Total volume for 100g mass of this alloy = 13.01 cm3

Ƥ = 100/13.01 = 7.69 g/cm3

Volume of the cathode (disc shape):

Radius = 6.5 cm; Height = 0.1 cm

V = π r2h = π*6.5*0.1 =13.273 cm3 = 13273 mm3

If h = 1 mm → V = 13273 mm3 = 13.273 cm3

M1 = Ƥ V = 7.69*13.273 = 102.06937 g

MSm =  = 73.95 g

MFe =  = 19.23 g

MCu =  = 3.16 g

MNi =  = 5.78 g

If h = 2 mm → V = 26546.46 mm3 = 26.54646 cm3

M2 = Ƥ V = 7.69*26.54646 = 204.1422774 g

→ M3 = M1*3 = 102.06937 g *3 = 306.20811 g

  1. Anode

Ni-Ce0.8Sm0.2

Ni:      m= n*M = 1*58.6934 = 58.7 g

Ce:       m= n*M = 0.8*140.116 = 112.1 g

Sm:      m= n*M = 0.2*150.36 = 30.1 g

Total mass = 200.9 g

Metal

Melting point

%W

Density (g.cm-3)

Nickel

1455 oC

29.22

8.902

Cerium

795 oC

55.8

6.76

Samarium

1072 oC

15

7.52

Total volume for 100g mass of this alloy = 13.53 cm3

Ƥ = 100/14.2 = 7.391 g/cm3

Volume of the anode (disc shape):

Radius = 6.5 cm; Height = 0.1 cm

V = π r2h = π*6.5*0.1 = 13.273 cm3 = 13273 mm3

If h = 1 mm → V = 13273 mm3 = 13.273 cm3

M1 = Ƥ V = 7.391*13.273 = 98.100743 g

MNi =  = 28.66482 g

MCe =  = 54.74 g

MSm =  = 14.715 g

If h = 2 mm → V = 26546.46 mm3 = 26.54646 cm3

→ M2 = M1*2 = 98.1 g *2 = 196.2 g

Procedure: