Porous three-element compound positive plate as well as preparation method and application thereof
A ternary composite and positive electrode technology, applied in electrode manufacturing, electrical components, battery electrodes, etc., can solve problems such as low cycle life of solid-state batteries, poor electrode/electrolyte interface compatibility, and interface impedance affecting ion transmission. Achieve the effect of enhancing the ability of ion transport, improving electrochemical performance, and improving interfacial compatibility
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Embodiment 1
[0024] A porous ternary composite positive electrode, characterized in that: the porous ternary positive electrode comprises the following materials: ternary 532, Surpe-P, polyvinylidene fluoride, lithium lanthanum zirconium tantalum oxide, LiTFSI and acetone, the mass parts of each material They are: ternary 532: 80 parts, Surpe-P: 5 parts, polyvinylidene fluoride: 5 parts, lithium lanthanum zirconium tantalum oxide: 15 parts, LiTFSI: 10 parts, acetone: 5 parts.
[0025] A preparation method for a porous ternary composite positive electrode sheet, comprising the following steps: Step 1: Mix ternary 532, Surpe-P, polyvinylidene fluoride, lithium lanthanum zirconium tantalum oxide and LiTFSI uniformly and then disperse them in N-methylpyrrolidone in solution;
[0026] Step 2: fully stir with a vacuum planetary mixer to obtain a positive electrode slurry;
[0027] Step 3: Then add uniformly dispersed acetone, and fully stir with a vacuum planetary mixer to obtain a composite po...
Embodiment 2
[0033] A porous ternary composite positive electrode is characterized in that: the porous ternary positive electrode comprises the following materials: ternary 532, acetylene black, polyvinylidene fluoride, lithium lanthanum titanium oxide, LiClO 4 and polyvinylpyrrolidone, the mass parts of each material are: ternary 532:85 parts, acetylene black: 2 parts, polyvinylidene fluoride: 3 parts, lithium lanthanum titanium oxide: 7 parts, LiClO 4 : 4 parts, polyvinylpyrrolidone: 4 parts.
[0034] A preparation method of a porous ternary composite positive electrode sheet, comprising the following steps: Step 1: combine ternary 532, acetylene black, polyvinylidene fluoride, lithium lanthanum titanium oxide and LiClO 4 After mixing evenly, disperse in N-methylpyrrolidone solution;
[0035] Step 2: fully stir with a vacuum planetary mixer to obtain a positive electrode slurry;
[0036] Step 3: then add uniformly dispersed polyvinylpyrrolidone, and fully stir with a vacuum planetary m...
Embodiment 3
[0042] A porous ternary composite positive electrode, characterized in that: the porous ternary positive electrode comprises the following materials: ternary 532, graphene, polyvinylidene fluoride, lithium lanthanum zirconium oxygen, LiPF 6 And ammonia carbonate, the mass parts of each material are: ternary 532:90 parts, graphene: 1 part, polyvinylidene fluoride: 2 parts, lithium lanthanum zirconium oxygen: 2 parts, LiPF 6 : 3 parts, ammonia carbonate: 2 parts.
[0043] A preparation method of a porous ternary composite positive electrode sheet, comprising the following steps: step 1: combining ternary 532, graphene, polyvinylidene fluoride, lithium lanthanum zirconium oxygen, LiPF 6 After mixing evenly, disperse in N-methylpyrrolidone solution;
[0044] Step 2: fully stir with a vacuum planetary mixer to obtain a positive electrode slurry;
[0045] Step 3: then add uniformly dispersed ammonia carbonate, and fully stir with a vacuum planetary mixer to obtain a composite positi...
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