Positive electrode as well as preparation method and application thereof
A positive electrode and positive electrode technology, applied in the field of electrochemistry, can solve the problem of limited degree of power density improvement, and achieve the effects of small energy consumption, large surface area, large energy density and power density
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[0027] The embodiment of the present invention also provides the above positive electrode preparation method, the process flow of the method is shown in image 3 shown, see also figure 1 , including the following steps:
[0028] S1. Obtain graphene derivative material, conductive agent, binder and positive electrode substrate 1, wherein, the molecular structural formula of described graphene derivative material is as follows:
[0029]
[0030] S2. Mixing the graphene derivative material, the conductive agent and the binder to prepare a positive electrode coating liquid;
[0031] S3. Coating the positive electrode coating solution on the surface of the positive electrode substrate 1 and drying to obtain the positive electrode.
[0032] It can be seen from the above S1 to S3 that the preparation of the positive electrode only needs to coat the positive electrode coating liquid prepared by mixing the graphene derivative material, the conductive agent and the binder on the po...
Embodiment 1
[0054] The positive electrode structure is as figure 1 As shown, the positive electrode includes a positive electrode substrate 1 and a positive electrode coating 2 bonded on the surface of the positive electrode substrate. Wherein, positive electrode coating 2 comprises graphene derivative material, conductive agent and binder; graphene derivative material molecular structural formula is as follows,
[0055]
[0056] The positive electrode preparation method is as follows, see also image 3 :
[0057] (1) Obtain graphene derivative material, acetylene black, polyvinylidene fluoride, aluminum positive electrode substrate 1, wherein the molecular structure of the graphene derivative material is as above;
[0058] (2) mixing the graphene derivative material, the conductive agent and the binder in a mass ratio of 0.84:0.08:0.08 to prepare a positive electrode coating solution;
[0059] (3) Spray the positive electrode coating liquid onto the surface of the positive electrod...
Embodiment 2
[0068] The structure of the positive electrode is the same as in Example 1, and the performance of the positive electrode is similar to that of the positive electrode in Example 1.
[0069] The positive electrode preparation method is as follows, see also image 3 :
[0070] (1) Obtain graphene derivative material, acetylene black, polyvinylidene fluoride, aluminum positive electrode substrate 1, wherein, the molecular structure of the graphene derivative material is as in the above-mentioned embodiment 1;
[0071] (2) mixing the graphene derivative material, the conductive agent and the binder in a mass ratio of 0.94:0.04:0.02 to prepare a positive electrode coating solution;
[0072] (3) Spray the positive electrode coating liquid onto the surface of the positive electrode substrate 1, dry, roll, and cut into pieces to obtain the positive electrode.
[0073] It has been measured that the positive electrode sheet has a larger energy supply capacitance and electric double la...
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Abstract
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