Graphene electrolyte for lead-acid storage battery and preparation method of graphene electrolyte
A lead-acid battery and graphene technology, applied in the direction of lead-acid batteries, acid electrolytes, aqueous electrolytes, etc., can solve the problems of poor acid-fixing ability, large electrolyte internal resistance, short service life, etc., to increase the reaction capacity, increase Activation energy, effect of enhancing flow activity
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[0028] Example 1
[0029] A graphene electrolyte for lead-acid batteries, consisting of the following components by mass percentage: 0.2% graphene aqueous solution, 0.8% sodium sulfate, 0.1% stannous sulfate, 5% silica sol, 0.5% sodium carboxymethyl cellulose, The remainder is 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] The modification of graphene before being configured into a graphene aqueous solution includes the following steps:
[0031] 1) Mix graphene particles, 15% sodium dibutyl naphthalene sulfonate solution and acid solution at a material-to-liquid ratio of 1g:45mL:18mL, control the temperature at 95℃, stir and mix for 10min, filter, and use water and no Wash with water and ethanol, and vacuum dry at 180°C for 15 minutes to obtain primary modified graphene particles;
[0032] 2) Mix the primary modified graphene particles with the chemical shearing ...
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[0038] Example 2
[0039] A graphene electrolyte for lead-acid batteries, consisting of the following components by mass percentage: 1.5% graphene aqueous solution, 1.5% potassium sulfate, 0.8% sodium sulfate, 0.3% stannous sulfate, 20% silica sol, 3% carboxymethyl Base cellulose sodium, the balance is sulfuric acid solution, the graphene content of the graphene aqueous solution is 7×10 -3 g / ml; SiO in the silica sol 2 The mass percentage of 15%.
[0040] The modification of graphene before being configured into a graphene aqueous solution includes the following steps:
[0041] 1) Mix graphene particles, 18% sodium dibutylnaphthalene sulfonate solution and acid solution at a material-to-liquid ratio of 1g:50mL:20mL, control the temperature at 110℃, stir and mix for 15min, filter, and use water and without Wash with water and ethanol, and vacuum dry at 200°C for 20 minutes to obtain primary modified graphene particles;
[0042] 2) Mix the primary modified graphene particles with the c...
Example Embodiment
[0048] Example 3
[0049] A graphene electrolyte for lead-acid batteries, consisting of the following components by mass percentage: 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, the balance is sulfuric acid solution, the graphene content of the graphene aqueous solution is 10×10 -3 g / ml; SiO in the silica sol 2 The mass percentage of 23%.
[0050] The modification of graphene before being configured into a graphene aqueous solution includes the following steps:
[0051] 1) Mix the graphene particles, 20% sodium dibutylnaphthalene sulfonate solution and acid solution at a material-to-liquid ratio of 1g:55mL:23mL, control the temperature at 120℃, stir and mix for 25min, filter, and use water and without Wash with water and ethanol, and vacuum dry at 220°C for 25 minutes to obtain primary modified graphene particles;
[0052] 2) Mix the prima...
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