A niobium-based battery structure for use in drones

Abstract

A niobium-based battery structure for use in drones includes a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode has a positive current collector and a positive electrode mixture coated on the positive current collector. The negative electrode has a negative current collector and a negative electrode mixture coated on the negative current collector. The negative electrode mixture comprises a niobium-based active material and a conductive material. The separator is located between the positive and negative electrodes. The electrolyte fills both sides of the separator and is located between the positive and negative electrodes. Accordingly, the negative electrode has the niobium-based active material, which can meet the requirements of drone batteries for low-temperature operation, safety, long life, and high power consumption.

Claims

1. A niobium-based battery structure for use in drones, comprising: A positive electrode having a positive current collector and a positive electrode mixture coated on one side of the positive current collector; a negative electrode having a negative current collector and a negative electrode mixture coated on one side of the negative current collector, the negative electrode mixture comprising a niobium-based active material and a conductive material; a separator membrane located between the positive electrode and the negative electrode, with the positive electrode mixture and the negative electrode mixture respectively adjacent to each other on both sides of the separator membrane; and an electrolyte filling both sides of the separator membrane and located between the positive electrode and the negative electrode.

2. A niobium-based battery structure for use in drones as described in claim 1, wherein, The niobium-based active material is selected from niobium-based oxides.

3. A niobium-based battery structure for use in drones as described in claim 1, wherein, The conductive material is selected from the group consisting of conductive carbon black (CB), carbon nanotubes, and graphene.

4. A niobium-based battery structure for use in drones as described in claim 1, wherein, The electrolyte comprises a solute and a solvent, wherein the solvent is propylene carbonate (PC) and the solute is lithium hexafluorophosphate (LiPF₆) with a concentration greater than 1 mole (M).

5. A niobium-based battery structure for use in drones as described in claim 1, wherein, The electrolyte is polyethylene oxide / lithium bis(trifluoromethanesulfonyl)imide (PEO / LITFSI).

6. A niobium-based battery structure for use in drones as described in claim 1, wherein, The area capacity of this negative electrode is between 1.5 and 2.2 mAh / cm².

7. A niobium-based battery structure for use in drones as described in claim 1, wherein, The particle size of this niobium-based active material is 1-30 micrometers (μm).

8. A niobium-based battery structure for use in drones as described in claim 1, wherein, The cathode mixture is selected from the group consisting of nickel (Ni), cobalt (Co) and manganese (Mn), and the nickel content in the cathode mixture is greater than 80% by weight.

9. A niobium-based battery structure for use in drones as described in claim 1, wherein, The separator is a polyethylene (PE) film.

10. A niobium-based battery structure for use in drones as described in claim 1, wherein, The positive electrode, the negative electrode, and the separator are wound into a pouch cell.

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