Lithium ion battery pole part, preparation method thereof and lithium ion battery
A lithium-ion battery and pole piece technology, which is used in battery electrodes, electrode manufacturing, electrode collector coating, etc., can solve the problem that the gel electrolyte cannot infiltrate the pole piece.
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Embodiment 1
[0087] Example 1 Preparation of Lithium-ion Battery Positive Electrode ①
[0088] The porous material involved in this embodiment is microporous ceramics; the electrode material is positive electrode material. The positive electrode material is lithium cobalt oxide. The gel electrolyte is a gel electrolyte for lithium ion batteries.
[0089] 1) Prepare the mixed membrane material for the upper and lower layers of the electrolyte storage layer;
[0090] 2) Coating the mixed membrane material for preparing the lower layer in step 1) on the surface of the current collector, heat-treating the lower layer, and cooling down;
[0091] 3) The upper layer prepared in step 1) is cooled with the mixed membrane material, and then coated on the surface of the lower layer of the pole piece obtained in step 2), left to stand and dried.
[0092] Step 1) The preparation of the mixed membrane material for the lower layer of the electrolyte layer includes: a porous material, an electrode mate...
Embodiment 2
[0109] Example 2 Preparation of Lithium-ion Battery Negative Electrode ①
[0110] The steps and parameters not mentioned in this embodiment are the same as in Embodiment 1. The involved porous material is microporous ceramics; the electrode material is negative electrode material. The negative electrode material is carbon nanotubes. The gel electrolyte is the same as in Example 1.
[0111] 1) Prepare the mixed membrane material for the upper and lower layers of the electrolyte storage layer;
[0112] 2) Coating the mixed membrane material for preparing the lower layer in step 1) on the surface of the current collector, heat-treating the lower layer, and cooling down;
[0113] 3) The upper layer prepared in step 1) is cooled with the mixed membrane material, and then coated on the surface of the lower layer of the pole piece obtained in step 2), left to stand and dried.
[0114]Step 1) The preparation of the mixed membrane material for the lower layer of the electrolyte lay...
Embodiment 3
[0131] Example 3 Preparation of Lithium-ion Battery Positive Electrode ②
[0132] The porous material involved in this embodiment is macroporous alumina; the electrode material is positive electrode material. The positive electrode material is lithium iron phosphate. The gel electrolyte is a gel electrolyte for lithium ion batteries.
[0133] 1) Prepare the mixed membrane material for the upper and lower layers of the electrolyte storage layer;
[0134] 2) Coating the mixed membrane material for preparing the lower layer in step 1) on the surface of the current collector, heat-treating the lower layer, and cooling down;
[0135] 3) The upper layer prepared in step 1) is cooled with the mixed membrane material, and then coated on the surface of the lower layer of the pole piece obtained in step 2), left to stand and dried.
[0136] Step 1) The preparation of the mixed membrane material for the lower layer of the electrolyte layer includes: a porous material, an electrode mat...
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