Low-temperature charge-discharge lithium ion battery and negative electrode material thereof
A technology of lithium ion battery and negative electrode material, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor kinetics and low specific capacity, achieve good electronic conductivity, high specific capacity, and is conducive to large-scale The effect of production and use
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] (1) Negative electrode sheet preparation: use commercial cuprous sulfide Cu 2 S is used as the negative electrode active material, figure 1 The X-ray diffraction spectrum of the negative electrode material is shown, which proves that it is cuprous sulfide in monoclinic phase. Negative electrode active material, conductive agent Ketjen black, and binder sodium alginate were mixed in a mass ratio of 7:2:1, added water and stirred evenly, then evenly coated on the copper foil current collector, and dried in vacuum at 80°C Obtain the negative pole piece, the load capacity of negative pole active material is 3mg / cm 2 .
[0042] (2) Half-cell preparation: use metal lithium foil as the counter electrode, glass fiber as the diaphragm, and select 1 mol / L lithium bistrifluoromethanesulfonimide (LiTFSI) as the electrolyte dissolved in 1,3-dioxolane ( DOL), ethylene glycol dimethyl ether (DME) mixed solution (DOL:DME=1:1Vol%), in a glove box with water and oxygen content lower t...
Embodiment 2
[0044] (1) Preparation of the negative pole piece: the negative pole piece was prepared by the method in step (1) of Example 1.
[0045] (2) Positive electrode sheet preparation: use commercial NMC811 as the positive active material, mix positive active material, conductive agent Ketjen black, and binder PVDF at a mass ratio of 7:2:1, add N-methylpyrrolidone and stir evenly , uniformly coated on the aluminum foil current collector, and dried in vacuum at 80°C to obtain a positive electrode sheet, the loading capacity of the positive active material is 7mg / cm 2 .
[0046] (3) Lithium-ion battery preparation: use glass fiber as the diaphragm, choose 1mol / L lithium bistrifluoromethanesulfonimide (LiTFSI) as the electrolyte, dissolve in 1,3-dioxolane (DOL), ethylene glycol In a mixed solution of dimethyl ether (DME) (DOL:DME=1:1Vol%), in a glove box with water and oxygen content lower than 0.1ppm , diaphragm, electrolyte, positive electrode sheet, gasket, and positive electrode ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
