Lithium metal battery
A lithium metal battery, lithium aluminum alloy technology, applied in the direction of lithium batteries, secondary batteries, battery electrodes, etc., can solve the problems that hinder the commercialization of lithium metal batteries, reduce battery cycle performance, and increase electrolyte consumption, so as to improve safety properties and stability, suppress side reactions, improve uniformity and compactness
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[0063] The preparation method of the lithium metal battery of the present invention is as follows. After the positive electrode, the negative electrode, the separator and the electrolyte are packaged, the lithium metal battery is obtained.
[0064] Specifically, the preparation method provided by the present invention is the same as the preparation method of conventional lithium metal batteries. For example, the positive electrode, negative electrode, separator and electrolyte provided by the present invention can be used to make a wound lithium metal battery or a laminated lithium metal battery. .
[0065] The invention provides that the lithium ion battery can be used in electrical equipment, and the electrical equipment includes the lithium metal battery of the invention.
[0066] Wherein, the electric device may be, for example, a new energy vehicle, an electronic device, an electric tool, an electric energy storage facility, and the like.
Embodiment 1
[0069] The present embodiment is a kind of lithium metal battery, and its structure is as follows:
[0070] Positive electrode: including aluminum foil and a positive electrode material layer coated on the surface of the aluminum foil, the positive electrode material layer is composed of positive electrode active material LiNi with a weight ratio of 97:2:1 0.8 mn 0.1 co 0.1 o 2 (NCM811), conductive agent carbon black SP, binder polyvinylidene fluoride mixed;
[0071] Negative electrode: including aluminum foil and a lithium aluminum alloy layer compounded on the surface of the aluminum foil, the weight percentage of aluminum in the lithium aluminum alloy layer is 0.1%, and the thickness of the lithium aluminum alloy layer is 20 μm;
[0072] Isolation film: polyimide isolation film;
[0073] Electrolyte: including electrolyte and solvent, wherein the solvent is a combination of ethylene carbonate EC and dimethyl carbonate DMC with a mass ratio of 3:7, the electrolyte is LiF...
Embodiment 2-6
[0076] Examples 2-6 are respectively a lithium metal battery. The difference between them and Example 1 is that the aluminum content in the lithium-aluminum alloy layer is different, and the rest are the same as Example 1. The specific composition is shown in Table 1.
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