Over-discharge prevention negative electrode, preparation method thereof and battery
An over-discharge and negative electrode technology, applied in the direction of negative electrodes, battery electrodes, secondary batteries, etc., can solve the problems of carbon negative electrode capacity exhaustion, negative electrode current collector copper dissolution, potential rise, etc. The process is simple and the effect of preventing over-discharge
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[0045] In another embodiment, the present invention provides a method of preparation of the above-described anti-discharged negative electrode, the preparation method comprising:
[0046] The preparation of the anti-translating function layer 2 including the niobium titanium compound is prepared in at least one side surface of the collector 3, and the negative electrode active material layer 1 is prepared on the surface of the anti-transition function layer 2.
Example Embodiment
[0047] Example 1
[0048] This embodiment provides an anti-prevention function layer 2 and an anode active material layer 1, including a first binder and TiNb, including the first binder and TiNb, including the first binder and the negative electrode active material layer 1. 2 O 7 . Anti-transmissive function layer 2 in tinb 2 O 7 The mass content is 75%. The anti-transition function layer 2 has a thickness of 5 μm, and the first binder is a polyamide.
[0049] The negative electrode active material layer 1 includes a mass ratio of 97: 1: 2: a conductive agent, and a second binder. The negative electrode active material is graphite; the conductive agent is super P; the second binder is a polyamide.
Example Embodiment
[0050] Example 2
[0051] In this embodiment, there is provided an anti-prevention function layer 2 and an anode active material layer 1, and the anti-translating function layer 2 includes a first binder and a first binder and a first binder and a first binder. Tinb 2 O 7 . Anti-transmissive function layer 2 in tinb 2 O 7 The mass content is 50%. The thickness of the anti-transition function layer 2 is 10 μm.
[0052] The negative electrode active material layer 1 is identical to Example 1.
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