A kind of lead-acid battery graphene electrolyte and preparation method thereof
A lead-acid battery, graphene technology, applied in lead-acid batteries, acidic electrolytes, water-based electrolytes, etc., can solve the problems of poor solid acid ability, short service life, large internal resistance of electrolyte, etc., to increase reaction capacity, enhance Flow activity, the effect of increasing activation energy
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Embodiment 1
[0029] A kind of lead-acid battery graphene electrolyte, is made up of the component of following mass percent: 0.2% graphene aqueous solution, 0.8% sodium sulfate, 0.1% stannous sulfate, 5% silica sol, 0.5% sodium carboxymethyl cellulose, The remainder is a sulfuric acid solution, and the graphene content of the graphene aqueous solution is 0.5×10 -3 g / ml; SiO in the silica sol 2 The mass percentage content is 10%.
[0030] Graphene is modified before being configured into graphene aqueous solution and comprises the following steps:
[0031] 1) Mix graphene particles, sodium dibutylnaphthalene sulfonate solution with a mass concentration of 15% and acid solution according to a solid-liquid ratio of 1g: 45mL: 18mL, stir and mix at a controlled temperature of 95°C for 10min, filter, and water and no Wash with water and ethanol, and dry in vacuum at 180°C for 15 minutes to obtain primary modified graphene particles;
[0032] 2) Mix primary modified graphene particles with che...
Embodiment 2
[0039] A kind of lead-acid storage battery graphene electrolyte, is made up of the component of following mass percent: 1.5% graphene aqueous solution, 1.5% potassium sulfate, 0.8% sodium sulfate, 0.3% stannous sulfate, 20% silica sol, 3% carboxymethyl Sodium cellulose, the balance is a sulfuric acid solution, and the graphene content of the graphene aqueous solution is 7 × 10 -3 g / ml; SiO in the silica sol 2 The mass percentage content is 15%.
[0040] Graphene is modified before being configured into graphene aqueous solution and comprises the following steps:
[0041]1) Mix graphene particles, sodium dibutylnaphthalene sulfonate solution with a mass concentration of 18% and acid solution at a solid-liquid ratio of 1g: 50mL: 20mL, stir and mix for 15min at a controlled temperature of 110°C, filter, and water and no Wash with water and ethanol, and dry in vacuum at 200°C for 20 minutes to obtain primary modified graphene particles;
[0042] 2) Mix the primary modified gra...
Embodiment 3
[0049] A kind of lead-acid storage battery graphene electrolyte, is made up of the component of following mass percent: 5% graphene aqueous solution, 1.5% sodium sulfate, 1.5% potassium sulfate, 0.8% zinc sulfate, 1.2% aluminum sulfate, 0.7% stannous sulfate , 30% silica sol, 6% sodium carboxymethyl cellulose, and the remainder is sulfuric acid solution, and the graphene content of the graphene aqueous solution is 10×10 -3 g / ml; SiO in the silica sol 2 The mass percentage composition is 23%.
[0050] Graphene is modified before being configured into graphene aqueous solution and comprises the following steps:
[0051] 1) Mix graphene particles, sodium dibutylnaphthalene sulfonate solution with a mass concentration of 20% and acid solution according to a solid-liquid ratio of 1g: 55mL: 23mL, stir and mix for 25min at a controlled temperature of 120°C, filter, and water and no Washing with water and ethanol, and vacuum drying at 220°C for 25 minutes to obtain primary modified...
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