Environmental Engineering Reference
In-Depth Information
TABLE 9.1 The Different Fuel Cells that Have Been Realized and Their Electrode Reactions
PEMFC
(Polymer Electrolyte
Menbrane)
AFC
(Alkaline)
DMFC
(Direct Methanol)
PAFC
(Phosphoric Acid)
MCFC
(Molten Carbonate)
SOFC
(Solid Oxide)
Operating
temp. (°C)
60-120
60-120
160-220
600-800
800-1000
low temperature
(500-600) possible
<
100
Anode
reaction
H
+
→
2
2
OH
H O
−
H
→
2
H
−
+
2
e
−
CH OH H O
CO
+
H
→
2
H
+
+
2
e
−
H
+
→
CO
H O CO
2
−
H
+
→
O
H O
2
−
2
2
3
2
2
2
2
→
+
6
H
+
+
6
e
−
+
2
e
−
+
+
2
e
−
+
2
e
−
2
2
2
2
2
Cathode
reaction
O
+
H O
+
2
e
−
O
+
2
H
+
+
2
e
−
3 2
/ O
+
6
H
+
+
6
e
−
O
+
2
H
+
+
2
e
−
O
+
CO
+
2
e
−
O
+
2
e
−
1
2
1
2
1
2
1
2
1
2
2
2
2
2
2
2
2
2
−
→
H O
→
3
H O
→
H O
2
−
2
−
→
2
OH
→
CO
→
O
2
2
2
3
Source
: Reproduced with permission from Carrette et al. [5].
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