Lithium battery

Patent metadata

Field	Value
Publication number	US-9318773-B2
Application number	US-201313743348-A
Country	US
Kind code	B2
Filing date	Jan 17, 2013
Priority date	Sep 28, 2012
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

Abstract

A lithium battery, including an anode, a cathode, an electrolyte solution and a package structure. The anode includes a material having an oxygen-containing functional group. The cathode and the anode are configured separately, and a housing region is defined between the cathode and the anode. The electrolyte solution is disposed in the housing region, and the electrolyte solution includes water and an additive. The package structure covers the anode, the cathode and the electrolyte solution.

First claim

What is claimed is:

1. A lithium battery, comprising:
an anode, comprising a material having an oxygen-containing functional group, wherein the material having the oxygen-containing functional group comprises: carbide;
a cathode, configured separately from the anode, wherein a housing region is defined between the anode and the cathode;
an electrolyte solution, disposed in the housing region, comprising water, an organic solvent, an electrolyte and an additive, wherein the water, the additive and the material having the oxygen-containing functional group are configured to undergo an electrochemical reaction to produce a self-polymerizing substance, a content of the water is greater than 20 ppm and less than 300 ppm and the additive is selected from the group consisting of maleimide, polymaleimide, bismaleimide, polybismaleimide, copolymers of bismaleimide and maleimide, vinylene carbonate and a mixture thereof; and
a package structure, covering the anode, the cathode and the electrolyte solution.

2. The lithium battery of claim 1 , wherein the oxygen-containing functional group comprises phenol group, quinone group, pyrone group, pyran group, lactone group or a combination thereof.

3. The lithium battery of claim 1 , wherein the carbide comprises hard carbon, soft carbon, a carbon black, graphite, graphene, carbon fiber, carbon nanotubes or a mixture thereof.

4. The lithium battery of claim 1 , wherein the cathode comprises a lithium metal, a lithium mixed metal oxide or a combination thereof.

5. The lithium battery of claim 4 , wherein the lithium mixed metal oxide comprises LiMnO 2 , LiMn 2 O 4 , LiCoO 2 , Li 2 Cr 2 O 7 , Li 2 CrO 4 , LiNiO 2 , LiFeO 2 , LiNi x Co 1-x O 2 , LiFePO 4 , LiMn 0.5 Ni 0.5 O 2 , LiMn 1/3 Co 1/3 Ni 1/3 O 2 , LiMc 0.5 Mn 1.5 O 4 or a combination thereof, where 0<x<1, and Mc is a divalent metal.

6. The lithium battery of claim 1 , wherein a content of the water is 100 ppm.

7. The lithium battery of claim 1 , wherein the maleimide comprises N-phenylmaleimide, N-(o-methylphenyl)-maleimide, N-(m-methylphenyl)-maleimide, N-(p-methylphenyl)-maleimide, N-cyclohexylmaleimide, maleimide, maleimidophenol, maleimidobenzocyclobutene, phosphorus-containing maleimide, phosphonate-containing maleimide, siloxane-containing maleimide, N-(4-tetrahydropyranyl-oxyphenyl) maleimid, or 2,6-xylylmaleimide.

8. The lithium battery of claim 1 , wherein a structural formula of the bismaleimide is shown in Formula 1:

wherein R comprises:

9. The lithium battery of claim 1 , wherein a content of the additive is 0.05 wt % to 0.5 wt %.

10. The lithium battery of claim 1 , wherein the organic solvent comprises γ-butyrolactone (GBL), ethylene carbonate (EC), propylene carbonate (PC), diethyl carbonate (DEC), propyl acetate (PA), dimethyl carbonate (DMC), ethylmethyl carbonate (EMC), or a combination thereof.

11. The lithium battery of claim 1 , wherein a content of the organic solvent is 95 wt % to 99 wt %.

12. The lithium battery of claim 1 , wherein the electrolyte is lithium salt.

13. The lithium battery of claim 12 , wherein the lithium salt comprises LiPF 6 , LiBF 4 , LiAsF 6 , LiSbF 6 , LiClO 4 , LiAlCl 4 , LiGaCl 4 , LiNO 3 , LiC(SO 2 CF 3 ) 3 , LiN(SO 2 CF 3 ) 2 , LiSCN, LiO 3 SCF 2 CF 3 , LiC 6 F 5 SO 3 , LiO 2 CCF 3 , LiSO 3 F, LiB(C 6 H 5 ) 4 , LiCF 3 SO 3 or a combination thereof.

14. The lithium battery of claim 1 , wherein a content of the electrolyte is 30 wt % to 40 wt %.

15. The lithium battery of claim 1 , further comprising a polymer binder that separately reacts with the anode and/or the cathode.

16. The lithium battery of claim 15 , the polymer binder comprises polyvinylidene fluoride (PVDF), styrene-butadiene rubber (SBR), polyamide, melamine resin, Carboxymethyl-Cellulose (CMC), a water-based binder (LA132, manufactured by Chengdu Indigo power sources CO., Ltd.) or a combination thereof.

17. The lithium battery of claim 1 , wherein the material of the anode further comprises metal oxide.

18. The lithium battery of claim 17 , wherein the metal oxide comprises SnO, SnO 2 , GeO, GeO 2 , In 2 O, In 2 O 3 , PbO, PbO 2 , Pb 2 O 3 , Pb 3 O 4 , Ag 2 O, AgO, Ag 2 O 3 , Sb 2 O 3 , Sb 2 O 4 , Sb 2 O 5 , SiO, ZnO, CoO, NiO, FeO or a combination thereof.

Assignees

• Univ Nat Taiwan Science Tech
• Univ Chung Yuan Christian

Inventors

• Wang Fu-Ming
• Cheng Chin-Shu
• Liu Wei-Jen

Classifications

• H01M10/0567

  characterised by the additives · CPC title

• H01M10/056 Primary

  characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes · CPC title

• H01M4/485 Primary

  of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title

• Y02T10/7011

  Cross-Sectional Technologies · mapped topic

• H01M4/587

  for inserting or intercalating light metals · CPC title