Post on 17-Jan-2018
transcript
Effect of the exchange current density (j0) on the the current density (j):
j(t) = j0 {exp [-nF/RT] - exp[(1-)nF/RT]}
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200
j0 = 10-2 A = 0.5
j / mA
/ mV-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-3 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-4 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-5 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-6 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-7 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-8 A = 0.5
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-9 A = 0.5
-600 -400 -200 200 400 6000
j(t) = j0 { exp [-nF/RT] - exp[(1-)nF/RT] }
represented together with the forward and backward components
Variation of j as a function of j0:
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-2 A = 0.5
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-3 A = 0.5
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-4 A = 0.5
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
j0 = 10-5 A = 0.5
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
j0 = 10-6 A = 0.5
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-7 A = 0.5
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000
-600-400-2000200400600
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
total current anodic partial current cathodic partial current
j0 = 10-8 A = 0.5
-600 -400 -200 200 400 6000
-200
-150
-100
-50
0
50
100
150
200j / mA
/ mV
j0 = 10-9 A = 0.5
total current anodic partial current cathodic partial current
-600 -400 -200 200 400 6000