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:
solar battery storage system Vendor
Lithium Ion Battery 18650 Pack 10.8V 3000mAh
What are the good advantages of large capacity lithium batteries?solar battery for house
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
lithium ion golf cart batteries price
2023-03-20deep cycle marine battery maker
2023-03-2048v lithium golf cart battery
2023-03-22solar powered battery pack wholesaler
2023-03-20lithium batteries for solar panels price
2023-04-07solar energy storage batteries Vendor
2023-03-20portable power station for camping
2023-05-08solar energy generator
2023-05-08deep cell marine battery
2023-05-08solar battery generator
2023-05-0812v marine battery
2023-05-08portable battery generators
2023-05-083000 Cycles Na-ion Sodium-ion Battery Pack 18650 26700 12V 24V 36V 48V
2023-08-04Forklift Battery 12V 150Ah
2022-09-1921700 3.7V Lithium Ion Battery 4000mAh 10C
2025-06-05Humanoid Robot 25.9V 20Ah 18650 Lithium Battery Pack
2025-03-31Lithium Ion Battery 18650 Pack 10.8V 3000mAh
2025-04-10Why Solid State Home Batteries Are the Future of Residential Energy Backup
2025-05-23Positive overcharge reaction.deep cycle marine battery Processing.solar batteries for home manufacturer
2023-04-18The Versatility and Reliability of 12V 100Ah AGM Batteries: A Comprehensive Overview
2025-03-18Hysincere Battery's Venture to Solar Energy Trade Shows in Las Vegas
2023-07-26Enhancing Golf Cart Performance: The Advantages of EZGO Lithium Battery Conversion Kits
2025-03-17Lithium battery characteristics.lithium deep cycle marine battery price
2023-04-23What are the advantages and disadvantages of soft pack lithium batteries?solar generators for sale
2023-08-23Irregular shape battery.lithium deep cycle marine battery wholesaler
2023-04-10Highor polymer lithium battery
2023-02-09Fuel power cell
2022-12-05