We have made a 2.0 V battery with Graphite and Aluminium electrodes. When we spray water, we started getting stabilized current and LED glow. What will be the oxidation/reduction reaction on both the electrodes? Kindly answer?
Dear Dr Alok Kumar Rai,
The real reactions depend on water pH and different ions presence. Generally - dissolution of aluminium foil and other process on graphite - hydrogen reduction or dissolved in water oxygen reduction are the most possible. The final form of Al depends on solution and pH (Al2O3, Al(OH)3, Al3+, [Al(OH)6]3-). For example:
Anode (-): Al + 3H2O = Al(OH)3 + 3H+ + 3e
Cathode (+): 2H+ + 2e = H2
Dear Valerii Kotok
Thank you so much for your reply. Actually we are trying to make Cement based battery with Al and Graphite electrode. The battery works until the moisture presents in the battery.
As per your suggestion about oxidation/reaction reaction, there is 3 electron on anode but only 2 electron accepted by cathode.What about other 1 electron. Kindly response
Dear Dr Alok Kumar Rai,
The reactions can be rewrtited as follows:
Anode (-): 2Al + 6H2O = 2Al(OH)3 + 6H+ + 6e
Cathode (+): 6H+ + 6e =3H2
Dear Dr Alok Kumar Rai,
could you give us, please, a titration curve V(q) ?
Also, the use of a reference electrode will help us to write the reactions.
Dear Ioannis Samaras
Thank you so much. could you please give me your email id, I would be in touch with you for discussion. Thanks again.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Carbon Materials
- Graphite