Negative lead paste for lead-carbon battery
A negative lead paste, lead-carbon battery technology, applied in battery electrodes, lead-acid batteries, lead-acid battery construction and other directions, can solve the problems of decreased hydrogen suppression effect, uneven size, poor consistency, etc., and achieve the increase of hydrogen evolution resistance. Utilization rate, the effect of reducing hydrogen evolution
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Embodiment 1
[0057] Preparation of activated carbon-gallium oxide-indium oxide composites: physical vapor deposition method in activated carbon Gallium oxide and indium oxide are deposited on the surface and pores, where activated carbon The specific surface area is 1800~2000m 2 / g, particle size D50 is 10-20m, activated carbon : gallium oxide: indium oxide weight ratio 24:1:1.
[0058] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 97 parts of lead powder, 2 parts of activated carbon-gallium oxide-indium oxide composite material, 0.2 part of carbon black, 0.5 part of barium sulfate, and 0.1 part of lignin sulfonate Sodium acid, 0.1 part of humic acid and 0.1 part of short fiber, the apparent density of the lead paste is 4.0-4.4g / cm 3 .
[0059] Two sets of reference negative electrode pastes were prepared.
[0060] The solid raw materials of the first group of negative electrode pastes include 97 parts of lead powder, 2 parts of g...
Embodiment 2
[0072] Preparation of activated carbon-zinc oxide composite material: Deposit zinc oxide on the surface of graphene by hydrothermal method, wherein the number of carbon atomic layers of graphene is within 10 layers, and the specific surface area is 300-400m 2 / g, the weight ratio of graphene: zinc oxide is 23:2.
[0073] Preparation of lead carbon negative electrode paste: the solid raw materials of the paste include 99 parts of lead powder, 0.5 parts of graphene-zinc oxide composite material, 0.25 parts of carbon black, 1 part of barium sulfate, and 0.01 part of sodium lignosulfonate , 0.2 parts of humic acid and 0.06 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .
[0074] Apply the above two kinds of lead pastes on the grid to make the negative plate, and the positive plate is assembled, filled with acid and activated according to the normal production process to produce 2V15Ah valve-regulated sealed lead-acid battery.
[0075] Two sets of...
Embodiment 3
[0088] Preparation of carbon black-graphite-bismuth oxide composite material: use a chemical water bath method to coat a thin layer of bismuth oxide on the surface of carbon black and graphite, and the specific surface area of carbon black is 1000-1200m 2 / g, particle size D 50 5~10m, the specific surface area of graphite is 8~10m 2 / g, particle size D 50 The thickness of bismuth oxide thin layer is about 100nm. The mass ratio of carbon black, graphite and bismuth oxide in the composite material is 10:9:1.
[0089] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 98 parts of lead powder, 5 parts of carbon black-graphite-bismuth oxide composite material, 0.2 part of barium sulfate, 0.05 part of sodium lignosulfonate, 0.05 part of Humic acid and 0.09 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .
[0090] Apply the above two kinds of lead pastes on the grid to make the negative plate, and t...
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