Preparation method of lead crystal carbon storage battery

Abstract

The invention relates to a preparation method of a lead crystal carbon storage battery. A composite carbon material with high specific surface area is added to a negative plate of the battery, so that the battery provided by the invention has long cycle life and excellent high current charge-discharge capability. A weak acid electrolyte is introduced into the assembled battery, so that, compared with the battery employing a strong acid electrolyte in the prior art, the battery provided by the invention is low in internal resistance; the hydrogen evolution over-potential is improved; the hydrogen evolution problem is effectively solved. Due to the characteristic that the formed electrolyte is in a crystalline state, active materials can be firmly fixed; an enough space is provided for motion of ions; the disadvantages of sulfation of a negative electrode of the lead-acid storage battery, corrosion of a positive grid, active material dropping and the like are effectively overcome; the service lifetime of the battery is greatly prolonged; meanwhile, the formed electrolyte in the crystalline state does not generate acid vapor in the charging process, does not generate a leakage phenomenon and is environment-friendly and safe; and the battery has excellent low temperature resistance.

Description

technical field [0001] The invention relates to the technical field of lead-carbon batteries, in particular to a method for preparing a lead crystal carbon battery. Background technique [0002] Entering the 21st century of rapid development, the problems of energy and resource shortages and environmental pollution faced by mankind will become more and more prominent, especially the energy crisis, which has become an important factor restricting the economic and social development of various countries. For this reason, countries all over the world are sparing no effort in developing and utilizing renewable resources, and maximizing the utilization rate of resources. my country's clean energy such as wind energy and solar energy has developed rapidly in recent years, but due to the intermittent nature of wind energy and solar energy, it is difficult to connect to the grid. In the absence of cost-effective energy storage equipment, the large-scale development of new energy is ...

AI Technical Summary

Problems solved by technology

However, the research and development of lead-carbon batteries also faces some problems. For example, the active material in lead-carbon batteries is easy to fall off, and the temperature adaptability is poor. After adding a certain amount of carbon materials, the hydrogen evolution overpotential of the negative electrode is reduced, and the battery is easy to lose water and dry up. , there is acid leakage phenomenon in the process of use, which has great pollution to the environment

[0004] The Chinese invention patent application "A Lead Crystal Battery" (application number: CN200810121140.9) with the application publication number of CN 101369673 A discloses a preparation method of a lead crystal battery, which uses silicate instead of sulfuric acid solution as the electrolyte, and forms The final electrolyte exists in the form of crystals, without acid leakage and hydrogen evolution, reducing environmental pollution. The battery cycle life is about twice that of ordinary lead-acid batteries. However, the cycle life of existing lead-carbon batteries has reached that of ordinary lead-acid batteries. It is more than 3 times that of the acid battery, and can realize fast charging and discharging, which is far superior to the performance of the above-mentioned lead crystal battery. Therefore, the service life of the above-mentioned lead crystal battery needs to be improved