High-capacity formation lead paste and preparation method thereof

Abstract

The invention discloses a high-capacity formation lead paste. An anode lead paste comprises the raw materials of lead powder, deionized water, dilute sulphuric acid and anode auxiliary materials, and particularly comprises 100 parts by weight of lead powder, 6.6-7.4 parts by weight of dilute sulphuric acid, 10-11 parts by weight of deionized water, 3-5 parts by weight of red lead, 0.1-0.3 part by weight of aquadag, 0.08-025 part by weight of stannous mono-sulphate, 0.03-0.05 part by weight of bismuth trioxide, 0.03-0.05 part by weight of antimonous oxide and 0.06-0.1 part by weight of polyester staple fiber; and a cathode lead paste comprises the raw materials of lead powder, deionized water, dilute sulphuric acid and cathode auxiliary materials, and particularly comprises 100 parts by weight of lead powder, 6.5-8.5 parts by weight of dilute sulphuric acid, 9-10 parts by weight of deionized water, 0.5-0.8 part by weight of barium sulfate, 0.15-0.25 part by weight of acetylene carbon black, 0.30-0.40 part by weight of humic acid and 0.06-0.1 part by weight of polyester staple fiber. The invention also discloses a preparation method of the high-capacity formation lead paste.

Description

technical field [0001] The invention relates to an internalized lead paste for batteries used in electric vehicles and a preparation method thereof. Background technique [0002] With the increase of motor power of electric vehicles on the market, the requirements for high-current discharge performance of batteries also increase. Nowadays, the calls for banning cadmium are getting louder and louder. The government has also formulated a ban on cadmium until the end of 2013 and strict requirements for the production of lead-acid batteries. This means that the internalization of lead-acid batteries has become an inevitable trend instead of externalization. And unchangeable facts, but people in the storage battery industry know that the internal capacity of the same type of battery is lower than the external capacity, and the method of increasing the acid density of the electrolyte in order to increase the capacity will reduce the cycle life of the battery. Contents of the inv...

AI Technical Summary

Problems solved by technology

Nowadays, the calls for banning cadmium are getting louder and louder. The government has also formulated a ban on cadmium until the end of 2013 and strict requirements for the production of lead-acid batteries. This means that the internalization of lead-acid batteries has become an inevitable trend instead of externalization. And unchangeable facts, but people in the storage battery industry know that the internal capacity of the same type of battery is lower than the external capacity, and the method of increasing the acid density of the electrolyte in order to increase the capacity will reduce the cycle life of the battery