Elemente si combinatii chimice

H2
Hydrogen fuel cell
Proton exchange membrane
Catalyst Catalyst
H +
(+): H 2
→ 2H +
+ 2e -
+
H +
e -
-
O2
Air
H2O
(-): O2 +
4H + + 4e-
→ H2O The negative ions
(electrons) are retained
by the catalyst of H +
(usually Platinum) at
anode.
Only H +
are mobile and
free to transport the
positive load through
the membrane
consisting of an organic
compound.
At the surface of
cathode (usually Nickel)
water are produced.