Ionomer electrode manufacturing slurry
An ion crosslinking, polymer technology, applied in electrode manufacturing, conductive coatings, battery electrodes, etc., can solve the problems of destroying cathode slurry uniformity, water treatment agglomeration, poor wettability, etc.
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example 1
[0082] The sample cathode electrode was prepared as follows: (1) 4wt% lithium polyacrylate (PLA) was dissolved in distilled water to form an ionomer aqueous solution; (2) 6wt% polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) The binder is mixed in the ionomer aqueous solution to form the ionomer-binder aqueous solution; (3) the ionomer-binder aqueous solution is combined with the positive electroactive material lithium iron phosphate ("LFP") Mix with carbon black to form a mixture ("75:15:4:6 mixture") containing 75wt% positive electroactive material, 15% carbon black, 4wt% PLA and 6wt% PVDF-HFP; The 15:4:6 mixture was transferred to a ball mill, and milled with 10 zirconia balls with a diameter of 5 mm for 45 minutes under the stirring condition of 600 rpm to form a slurry, in which the zirconia balls acted as a medium to promote mixing; ( V) Prepare a current collector, spread aluminum foil on a glass plate and spray acetone to prevent the formation of air bubbles betw...
example 2
[0084] By combining lithium-intercalated negative electrode electroactive materials, carbonate non-aqueous electrolytes, separators, and positive electroactive materials described in Example 1, a unique Li-ion electrochemical cell was fabricated in this example.
[0085] Each cell was charged and discharged between +4.0V and +2.5V at room temperature using a BT-2000ARBN battery test station (Arbin Instruments) at a 0.1C rate. figure 1 is a graph of the first cycle cycle voltage and capacity of the electrochemical cell prepared with the positive electroactive material of Example 1. exist figure 1 , the upward sloping curve is the charge curve, showing the battery being charged to +4V; it represents the ratio of charge capacity to voltage. The downward sloping curve is the discharge curve, indicating that the battery was discharged to +2.5V; it represents the ratio of discharge capacity to voltage. It showed a discharge capacity of 155.0 mAh / g. figure 1 is a graph of the firs...
example 3
[0087]The cathode electrode was prepared as follows: (1) 5 wt% sodium polyvinyl sulfonate (PSVS) was dissolved in distilled water to form an ionomer aqueous solution; (2) an equal amount of polyvinylidene fluoride (PVDF) was glued The mixture is mixed in the ionomer aqueous solution to form the ionomer-binder aqueous solution; (3) the ionomer-binder aqueous solution is mixed with the positive electroactive material lithium nickel manganese cobalt oxide and carbon Black is mixed to form a mixed solution containing 80wt% positive electroactive material, 10% carbon black, 5% PSVS and 5% PVDF ("80:10:5:5 mixture"); (Iv) mix 85:10:5:5 The mixture was transferred to a ball mill, and was ground with 10 zirconia balls with a diameter of 5mm for 30 minutes under the stirring condition of 800 rpm to form a slurry, wherein the zirconia balls played a role in promoting mixing; (V) Preparation of current collector , spread the aluminum foil on the glass plate and spray acetone to prevent t...
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