Non-aqueous secondary battery
A non-aqueous secondary battery, positive electrode current collector technology, applied in the direction of secondary batteries, non-aqueous electrolyte battery electrodes, battery electrodes, etc., can solve the problem of inability to ensure capacity, and achieve the effect of large capacity
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[0072] Example 1
[0073]
[0074] Using 97% by mass of lithium cobaltate (average particle size 12μm) as an active material, 1.5% by mass of acetylene black as a conductive aid, 1.5% by mass of polyvinylidene fluoride (PVDF) as a binder, and a solvent NMP, to prepare a composition containing a positive electrode mixture. The preparation of the positive electrode mixture-containing composition is carried out as follows. PVDF is dissolved in NMP in advance, the above-mentioned active material and acetylene carbon black are added to the solution, and NMP is further added while stirring to make it fully dispersed. Adjust the viscosity. Use an applicator to evenly coat the composition containing the positive electrode mixture on a thickness of 12μm and a tensile strength of 250N / mm 2 , Both sides of Al alloy foil made of A3003H with 1.4% elongation at break are then calendered with a roll press under the conditions of a roll temperature of 100°C and a pressure of 8kN / cm, and cut to a...
Example Embodiment
[0084] Example 2
[0085] The width and length dimensions of the electrode and separator were adjusted, except that the same operation as in Example 1 was performed, and the wound electrode body was inserted into a rectangular battery (width / thickness ratio of 1.7) with a width of 17 mm, a thickness of 10 mm, and a height of 65 mm. Except for the inside of the case (external body), the same procedure as in Example 1 was carried out to produce a non-aqueous secondary battery.
Example Embodiment
[0086] Example 3
[0087] The width and length of the electrode and separator were adjusted, except that the same operation as in Example 1 was performed, and the wound electrode body was inserted into a square (width / thickness ratio of 10.0) battery with a width of 40 mm, a thickness of 4 mm, and a height of 50 mm. Except for the inside of the case (external body), the same procedure as in Example 1 was carried out to produce a non-aqueous secondary battery.
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