source:other news
release time:2023-08-15
Hits:0
Popular:

During the discharge process of the battery, it belongs to the primary battery reaction. This type of electrode reaction involves electrolyte solution. If it can be analyzed whether the electrolyte solution is involved in the electrode reaction, the writing of the negative electrode reaction formula and the positive electrode reaction formula can be easily solved.
Taking lead-acid batteries as an example, we will analyze the writing method of electrode reaction equations.
The total reaction of lead-acid batteries is: Pb+PbO2+2H2SO4=2PbSO4+2H2O
According to the analysis of the working principle of the primary battery, the negative electrode loses electrons and undergoes an oxidation reaction. It can be seen that: Pb 2e -=Pb2+①, the generated Pb2+enters the electrolyte solution, and Pb2+cannot coexist with SO42- in the solution. The reaction must continue to generate PbSO4, that is, Pb2++SO42-=PbSO4 ②. Therefore, the negative electrode reaction formula of the primary battery is ①+②, that is, Pb 2e -+SO42-=PbSO4; The positive electrode is the electrode where electrons undergo a reduction reaction, with PbO2+2e -=Pb2++2O2- ①. Pb2+and O2- enter the solution. As the electrolyte solution is an H2SO4 solution, O2- cannot exist alone in an acidic environment. The particles that can be combined with O2- are H+and H2O. O2- preferentially combines with H+to generate H2O in an acidic environment, resulting in a reaction at the positive electrode: 4H++2O2-=2H2O ②; Pb2++SO42-=PbSO4 ③ According to the above analysis, the positive electrode reaction formula is ①+②+③, that is, PbO2+2e -+SO42-+4H+=PbSO4+2H2O. (Note: Charge conservation and mass conservation should be followed in the electrode reaction equation; when adding the negative and positive reaction equations to obtain the total reaction, it should be noted that the number of electrons gained and lost should be equal.)
For example, Ag Zn high-energy batteries (button batteries) are composed of Ag2O, Zn, and KOH solutions. The total reaction is: Zn+Ag2O+H2O=Zn (OH) 2+2Ag
Read recommendations:
best battery for home inverter
3600W 5120Wh solar power station lifepo4 battery portable with wheels
Extending Performance in Cold Climates: The Advantages of Heated Lithium Batteries
Last article:Lithium primary battery.12 volt deep cycle batteries
Next article:What are the requirements for lithium batteries used in intelligent robots shared by lithium battery manufacturers?best solar powered generator
related suggestion
solar power storage Production
2023-03-20deep cycle trolling motor battery wholesaler
2023-04-07lifepo4 24v price
2023-04-07dual purpose marine battery wholesaler
2023-03-20deep cell marine battery direct sales
2023-03-20lithium ion golf cart batteries
2023-03-20power station solar
2023-05-08best solar generator for home
2023-05-08dual purpose marine battery
2023-05-0812v 200ah
2023-05-08best battery for solar panel
2023-05-08solar powered electric generator
2023-05-08Lithium Ion Battery 18650 Pack 10.8V 3500mAh
2025-05-10Lithium Ion Battery 18650 Pack 11.1V 2200mAh
2025-05-10Customizable LiFePo4 Battery for AGV Robot 60V 72V
2023-02-0914650 Lithium Ion Battery for Electric Toothbrush
2023-02-143000 Cycles Na-ion Sodium-ion Battery Pack 18650 26700 12V 24V 36V 48V
2023-08-04Choosing the Right 12V Lithium Battery for Your Business Needs
2025-03-14How to Choose the Best 72 Volt Lithium Battery for Your Golf Cart Fleet
2025-05-22Understanding Motive Golf Cart Batteries: Amp Hours, Charging Issues, and Fleet Optimization
2025-05-22Why Solid State Home Batteries Are the Future of Residential Energy Backup
2025-05-23Optimizing Industrial Power Solutions with 11.1V Lithium Batteries
2025-03-14The section on lithium batteries in TDG regulations.powerstation 2000 watt
2023-07-24Familiar with the basic performance of lithium batteries.best trolling motor battery
2023-10-10450mAh drone polymer lithium battery price.lithium deep cycle marine battery Processing
2023-03-23Characteristics of lithium-ion batteries.solar battery storage system cost
2023-08-12How to improve the low-temperature performance of lithium iron phosphate batteries?whole house solar generator
2023-08-19