Production method of electrode plate, production method of battery, electrode plate and battery
A technology of electrode pole piece and positive pole piece, which is applied in the direction of electrolytic battery manufacturing, electrode manufacturing, electrode collector coating, etc., can solve the problems of affecting the rate performance, uneven distribution of conductive agent, easy aggregation of conductive agent, etc., to achieve Good sustainability, improved high-rate discharge performance, and reduced uneven distribution
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[0044]Method for preparing an electrode sheet electrode, the electrode 1 comprises a positive electrode sheet and negative electrode sheet pole piece; comprising the steps of:
[0045] Preparation of positive electrode sheet in accordance with the following procedure,
[0046] A step, the cathode is heated in proportion to the binder 5% to 10% dissolved in NMP solvent, the heating temperature is 50 ~ 80 ℃, preparing a positive electrode gum;
[0047] Step two, the positive electrode according to Comparative Example 2 gum to 15% of a conductive agent was added, stirred for 2h above; stirring temperature is 25 ~ 60 ℃, preparing a conductive agent and ionic conductive agent slurry;
[0048] Step three, the slurry was added in accordance with the proportion of 70% to 95% of the cathode material, more than 12h stirring, the temperature was stirred for 25 ~ 60 ℃, prepared positive electrode slurry;
[0049] Step four, using a coating equipment, according to certain coating amount of the...
Embodiment 1
[0069] Preparation of positive electrode plate: The PVDF as a binder was added to the positive electrode 1kg 19kgNMP solvent, heated and dissolved at 50 ~ 80 ℃, stirred 2h more to prepare a positive electrode of 5% gum; gum taken 20kg positive electrode, conductive carbon black was added 1kg Super P Li , 1kg vapor-grown carbon fiber VGCF, stirred 2h more; and finally adding the positive electrode material, LiCoO 2 45kg, was stirred at room temperature over 10h, to give a positive electrode slurry; using a coating apparatus, according to certain coating amount of the positive electrode coating, coating speed of 8m / min, drying temperature at 120 ℃, preparing a positive electrode sheet.
[0070] Preparation of negative electrode plate: The PVDF as a binder was added to the negative electrode 0.5kg 19.5kgNMP solvent, was heated at 50 ~ 80 ℃ dissolved, stirred 2h more, a negative electrode was prepared 5% gum; gum takes a negative 10kg, 0.5kg conductive carbon black was added Super P...
Embodiment 2
[0073] Preparation of positive electrode plate: The PVDF as a binder was added to the positive electrode 1kg 19kgNMP solvent, heated and dissolved at 50 ~ 80 ℃, stirred 2h more to prepare a positive electrode of 5% gum; gum taken 20kg positive electrode, conductive carbon black was added 1kg Super P Li , 1kg vapor-grown carbon fiber VGCF, stirred 2h more; LiCoO positive electrode material was added 2 45kg, was stirred at room temperature over 10h, to give a positive electrode slurry; using a coating apparatus, according to certain coating amount of the positive electrode coating, coating speed of 8m / min, drying temperature at 120 ℃, preparing a positive electrode sheet. The positive electrode sheet according to 1cm / min ~ 10cm / min through a speed such figure 1 The reaction vessel shown in the reaction vessel into the NMP-based multi-wall NCT suspension, after drying the electrode at a wetting temperature 120 ℃ prepared positive electrode sheet.
[0074] Preparation of negativ...
PUM
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