Die Zink-Kohle-Batterie (Leclanché-Element) ein Primärelement
Anode: |
Zink |
Kathode: |
Braunstein (MnO2)-Ruß-Gemisch |
Elektrolytlösung: |
Zinkchlorid (ZnCl2) und Ammoniumchlorid (NH4Cl) |
0 |
+II |
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⊖-Pol |
Anode |
Ox. |
Zn |
⇌ |
Zn2+ |
+ |
2 e- |
|
|
|
|
|
+IV |
+III |
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⊕-Pol |
Kathode |
Red. |
MnO2 |
+ |
e- |
+ |
H2O |
⇌ |
MnO(OH) |
+ |
OH- |
| · 2 |
Zn + 2 MnO2 + 2 H2O → Zn2+ + 2 MnO(OH) + 2 OH- |
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