A kind of preparation method of the lead-acid battery grid comprising lead-graphene composite material
A composite material, lead storage battery technology, applied in the direction of electrode carrier/current collector, etc., can solve the problems of low graphene density and inability to distribute lead alloy evenly, and achieve the effect of improving corrosion resistance, bonding and organizational structure
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Embodiment 1
[0035] 1. Preparation of lead-graphene composites
[0036] (1) Surfactant treatment is carried out to graphene powder
[0037] According to the ratio of 80g / L, the commercial graphene powder was added into the surfactant solution, soaked for 60min, and the soaking process was assisted by ultrasound. After soaking, the graphene powder was washed to neutral, filtered with suction, and then dried at 100°C. Sodium dodecylbenzenesulfonate was used as the surfactant, and the concentration of the surfactant was 2g / L.
[0038] (2) Configure the dispersion plating solution
[0039] The dispersion plating solution adopts lead citrate plating solution, and the specific formula is: citric acid 90g / L, potassium hydroxide 25g / L, ammonium acetate 85g / L, lead acetate 45g / L, brightener BD-1 is 80g / L.
[0040] (3) Add 5g / L of surface-active treated graphene powder to the dispersion electroplating solution, use pure lead plate as anode, lead plate, titanium plate, platinum plate or other iner...
Embodiment 2
[0064] 1. Preparation of lead-graphene composites
[0065] (1) Surfactant treatment is carried out to graphene powder. According to the ratio of 300g / L, the commercial graphene powder was added into the surfactant solution, soaked for 30min, and the soaking process was assisted by ultrasound. After soaking, the graphene powder was washed to neutral, filtered with suction, and then dried at 100°C. The surfactant is cetyltrimethylammonium bromide, and the concentration of the surfactant is 0.1 g / L.
[0066] (2) Configure the dispersion plating solution. The dispersion electroplating solution adopts lead methanesulfonate plating solution, and the specific formula is: 40 g / L of lead methanesulfonate, 125 g / L of methanesulfonic acid, 0.25 g / L of salicylaldehyde alkyl ether, and 0.1 g / L of bismuth nitrate.
[0067] (3) Add 15g / L graphene powder through surface active treatment in the dispersion electroplating solution, take pure lead plate as anode, lead plate, titanium plate, pl...
Embodiment 3
[0079] 1. Preparation of lead-graphene composites
[0080] The preparation method is the same as in Example 2.
[0081] 2. Preparation of lead battery grid
[0082] The formula of the grid alloy is as follows: tin: 0.5%, lead-graphene composite material: 2.0%, lead as the balance, and the above ratios are all percentages by weight.
[0083] The alloy preparation process steps are the same as in Example 1.
[0084] 3. Performance testing of lead battery grid
[0085] The detection method is the same as in Example 1.
[0086] The results are shown in Table 3.
[0087] table 3
[0088]
[0089] The above comparison 3, except that the alloy formula is tin: 0.5%, and the lead is the balance, the rest is the same as this embodiment.
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