A kind of multilayer electrode for electric double layer capacitor and its preparation method
A technology of electric double-layer capacitors and multi-layer electrodes, which is applied in the field of capacitors, can solve the problems of insufficient electron transmission capacity and ion adsorption capacity, and achieve the effects of reducing redundant design, increasing density and capacity, and improving physical properties
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Embodiment 1
[0034] S1. Prepare the inner layer electrode slurry and the outer layer electrode slurry respectively according to the raw materials in the following mass percentages;
[0035] The inner layer electrode slurry includes the following raw materials by mass percentage: 9% conductive agent, 2.5% binder, 1.5% dispersant, 87% petroleum coke activated carbon (the average pore size distribution exceeds 90% in 1nm); the inner layer The slurry viscosity was 1500 cps.
[0036] The outer layer electrode slurry includes the following raw materials by mass percentage: 2% conductive agent, 1.6% binder, 1.2% dispersant, 95.2% coconut shell water vapor activated carbon (the average pore size distribution exceeds 95% at 2.5nm); The viscosity of the outer layer slurry is 1500cps;
[0037] The conductive agent is conductive carbon black and Ketjen carbon with a mass ratio of 1:1, the binder is SBR, and the dispersant is CMC.
[0038] S2. Pass the inner layer slurry and the outer layer slurry th...
Embodiment 2
[0044] S1. Prepare the inner layer electrode slurry and the outer layer electrode slurry respectively according to the raw materials in the following mass percentages;
[0045] The inner layer electrode paste includes the following raw materials by mass percentage: 10% conductive agent, 3% binder, 2% dispersant, 85% carbon aerogel (average pore size distribution of 0.5nm exceeds 90%); the inner layer The slurry viscosity was 2000 cps.
[0046] The outer layer electrode slurry includes the following raw materials by mass percentage: 3% conductive agent, 1.8% binder, 1.2% dispersant, 94% coconut shell water vapor activated carbon (the average pore size distribution exceeds 95% at 2.0nm); The viscosity of the outer layer slurry is 2000cps.
[0047] The conductive agent is conductive carbon black, the binder is SBR, and the dispersant is CMC.
[0048] S2. Pass the inner layer slurry and the outer layer slurry through an extrusion coating machine, and apply two layers of slurry o...
Embodiment 3
[0053] S1. Prepare the inner layer electrode slurry and the outer layer electrode slurry respectively according to the raw materials in the following mass percentages;
[0054] The inner layer electrode slurry includes the following raw materials by mass percentage: 8% conductive agent, 2.2% binder, 1.3% dispersant, 88.5% petroleum coke activated carbon (average pore size distribution of 1.5nm exceeds 90%); the inner layer The slurry viscosity was 1000 cps.
[0055] The outer electrode slurry includes the following raw materials by mass percentage: 1% conductive agent, 1.4% binder, 1% dispersant, 96.6% coconut shell water vapor activated carbon (average pore size distribution of 3.0nm exceeds 95%); The layer slurry viscosity was 1000 cps.
[0056] The conductive agent is conductive carbon black and carbon nanotubes with a mass ratio of 1:1, the binder is SBR, and the dispersant is CMC.
[0057] S2. Pass the inner layer slurry and the outer layer slurry through an extrusion c...
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