ENERGY STORAGE COMPOSITE PARTICLE, BATTERY NEGATIVE ELECTRODE MATERIAL AND BATTERY

• US 20120164531A1
• Filed: 09/09/2011
• Published: 06/28/2012
• Est. Priority Date: 12/24/2010
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chen, Jin-Ming, Chang, Yen-Po, Liao, Shih-Chieh, Cheng, Chi-Ju
• Granted Patent: US 9,040,198 B2
• Time in Patent Office: Days
• US Class Current: 429/217
• CPC Class Codes: H01M 4/133 Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/1393 of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/364 as mixtures
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An energy storage composite particle is provided, which includes a carbon film, a conductive carbon component, an energy storage grain, and a conductive carbon fiber. The carbon film surrounds a space. The conductive carbon component and the energy storage grain are disposed in the space. The conductive carbon fiber is electrically connected to the conductive carbon component, the energy storage grain, and the carbon film, and the conductive carbon fiber extends from the inside of the space to the outside of the space. The energy storage composite particle has a high gravimetric capacity, a high coulomb efficiency, and a long cycle life. Furthermore, a battery negative electrode material and a battery using the energy storage composite particle are also provided.

Claims

1. An energy storage composite particle, comprising:

a carbon film, surrounding a space;

a conductive carbon component, disposed in the space;

an energy storage grain, disposed in the space; and

a conductive carbon fiber, electrically connected to the conductive carbon component, the energy storage grain and the carbon film, and the conductive carbon fiber is extended from the inside of the space to the outside of the space.

2. The energy storage composite particle according to claim 1, wherein the energy storage grain is selected from a nanometer silicon-based grain, a nanometer heterogeneous composite grain, and a combination thereof.

3. The energy storage composite particle according to claim 2, wherein a material of the nanometer heterogeneous composite grain is selected from Mg, Ca, Cu, Sn, Ag, Al, SiC, SiO, TiO₂, ZnO, Si—

Fe—

P, Si—

P, Si—

Fe, Si—

Cu, Si—

Al, Si—

Ni, Si—

Ti, Si—

Co and a combination thereof.

4. The energy storage composite particle according to claim 2, wherein the energy storage grain is a nanometer silicon-based grain and a nanometer heterogeneous composite grain, and a weight percentage of the nanometer heterogeneous composite grain 0.1-5.0 wt % based on a weight of the nanometer silicon-based grain.

5. The energy storage composite particle according to claim 1, wherein a weight percentage of the energy storage grain is 10-50 wt % based on a weight of the energy storage composite particle.

6. The energy storage composite particle according to claim 1, wherein a weight percentage of the conductive carbon component is 50-80 wt % based on a weight of the energy storage composite particle.

7. The energy storage composite particle according to claim 1, further comprising a conductive matrix, disposed in the space.

8. The energy storage composite particle according to claim 7, wherein a material of the conductive matrix is selected from carbon, metal, an organic material, an inorganic material, and a combination thereof.

9. The energy storage composite particle according to claim 7, wherein a weight percentage of the conductive matrix is 5-10 wt % based on a weight of the energy storage composite particle.

10. The energy storage composite particle according to claim 1, wherein a material of the carbon film comprises asphalt carbide or resin carbide.

11. The energy storage composite particle according to claim 1, wherein a surface area of the energy storage composite particle is 6-15 m²/g.

12. The energy storage composite particle according to claim 7, further comprising a plurality of apertures, disposed in the conductive matrix.

13. The energy storage composite particle according to claim 12, wherein the size of the apertures is in a range of 1 nm-1000 nm.

14. A battery negative electrode material, comprising:

the energy storage composite particle according to claim 1;

a conductive carbon; and

an adhesive, wherein a weight ratio of the energy storage composite particle, the conductive carbon, and the adhesive is 75;

15;

10.

15. The battery negative electrode material according to claim 14, wherein the adhesive comprises aqueous acrylate.

16. A battery, comprising:

an negative electrode plate, disposed with the battery negative electrode material according to claim 14;

a positive electrode plate, disposed correspondingly to the negative electrode plate; and

an ion conductive layer, electrically connected to the negative electrode plate and the positive electrode plate.

17. The battery according to claim 16, wherein a material of the positive electrode plate comprises lithium.