Solid polymeric electrolytes and lithium battery including the same

Patent metadata

Field	Value
Publication number	US-9306240-B2
Application number	US-201514690215-A
Country	US
Kind code	B2
Filing date	Apr 17, 2015
Priority date	Jun 15, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A solid polymeric electrolyte having a pattern, and a lithium battery including the same, includes a polymer matrix having a mesh structure and being formed of a cured photo-crosslinking agent; inorganic particles substantially uniformly distributed in the polymer matrix; and a liquid electrolyte comprised of a lithium salt and an organic solvent impregnated between the polymer matrix and the inorganic particles. The liquid electrolyte and the cured photo-crosslinking agent are present in a weight ratio ranging from 50:50 to 99:1. The liquid electrolyte containing the cured photo-crosslinking agent and the inorganic particle are present in a weight ratio ranging from 10:90 to 90:10. The solid polymeric electrolyte has properties suitable for a printing process to provide the pattern including a thickness ranging from about 10 nm to about 500 μm and, prior to curing the photo-crosslinking agent, a viscosity ranging from 100-10,000 poise under a shear rate condition of 1 sec −1 .

First claim

What is claimed is:

1. A solid polymeric electrolyte having a pattern that has a structure that is one of a polyhedron structure, a hexahedral structure, an elliptical structure, a spherical structure, a conical structure, and a polygonal structure, the solid polymeric electrolyte comprising:
a polymer matrix having a mesh structure, the polymer matrix being formed of a cured photo-crosslinking agent that includes at least one of polyethyleneglycol diacrylate, triethyleneglycol diacrylate, trimethylolpropaneethoxylate triacrylate, and Bisphenol A ethoxylate dimethacrylate;
inorganic particles substantially uniformly distributed in the polymer matrix; and
a liquid electrolyte comprised of a lithium salt and an organic solvent impregnated between the polymer matrix and the inorganic particles,
wherein the liquid electrolyte and the cured photo-crosslinking agent are present in a weight ratio ranging from 50:50 to 99:1,
wherein the liquid electrolyte containing the cured photo-crosslinking agent and the inorganic particles are present in a weight ratio ranging from 10:90 to 90:10, and
wherein the solid polymeric electrolyte has properties suitable for a printing process to provide said pattern including a thickness ranging from about 10 nm to about 500 μm and, prior to curing the photo-crosslinking agent, a viscosity ranging from 100-10,000 poise under a shear rate condition of 1 sec −1 .

2. The solid polymeric electrolyte of claim 1 , wherein the inorganic particles include at least one of silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), titanium dioxide (TiO 2 ), titanium barium oxide (BaTiO 3 ), lithium oxide (Li 2 O), lithium fluoride (LiF), lithium hydroxide (LiOH), lithium nitride (Li 3 N), barium oxide (BaO), sodium oxide (Na 2 O), lithium carbonate (Li 2 CO 3 ), calcium carbonate (CaCO 3 ), lithium aluminate (LiAlO 2 ), titanium strontium oxide (SrTiO 3 ), tin oxide (SnO 2 ), cerium oxide (CeO 2 ), magnesium oxide (MgO), nickel oxide (NiO), calcium oxide (CaO), zinc oxide (ZnO), zinc peroxide (ZrO 2 ), and silicon carbide (SiC).

3. The solid polymeric electrolyte of claim 1 , wherein a mean diameter of the inorganic particles ranges from about 1 nm to about 10 μm.

4. The solid polymeric electrolyte of claim 1 , wherein:
the lithium salt includes at least one of lithium hexafluorophosphate (LiPF 6 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroantimonate (LiSbF 6 ), lithium hexafluoroarsenate (LiAsF 6 ), lithium difluoromethanesulfonate (LiC 4 F 9 SO 3 ), lithium perchlorate (LiClO 4 ), lithium aluminate (LiAlO 2 ), lithium tetrachloroaluminate (LiAlCl 4 ), lithium chloride (LiCl), lithium iodide (LiI), lithium bis(oxalato)borate (LiB(C 2 O 4 ) 2 ), and lithium trifluoromethanesulfonyl imide (LiN(C x F 2x+1 SO 2 )(C y F 2y+1 SO 2 ) (where x and y are natural numbers), and
the organic solvent includes at least one of ethylene carbonate, propylene carbonate, g-butylrolactone, and ethylene glycol dimethyl ether.

5. A lithium battery, comprising:
an anode electrode provided with an anode active material and an anode current collector;
a cathode electrode provided with a cathode active material and a cathode current collector and disposed to face the anode electrode; and
a solid polymeric electrolyte having a pattern according to claim 1 and being interposed between the anode and cathode electrodes.

6. The lithium battery of claim 5 , wherein:
the lithium salt includes at least one of lithium hexafluorophosphate (LiPF 6 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroantimonate (LiSbF 6 ), lithium hexafluoroarsenate (LiAsF 6 ), lithium difluoromethanesulfonate (LiC 4 F 9 SO 3 ), lithium perchlorate (LiClO 4 ), lithium aluminate (LiAlO 2 ), lithium tetrachloroaluminate (LiAlCl 4 ), lithium chloride (LiCl), lithium iodide (LiI), lithium bis(oxalato)borate (LiB(C 2 O 4 ) 2 ), and lithium trifluoromethanesulfonyl imide (LiN(C x F 2x+1 SO 2 )(C y F 2y+1 SO 2 ) (where x and y are natural numbers), and
the organic solvent includes at least one of ethylene carbonate, propylene carbonate, g-butylrolactone, and ethylene glycol dimethyl ether.

7. The lithium battery of claim 5 , wherein the photo-crosslinking agent includes at least one of polyethyleneglycol diacrylate, triethyleneglycol diacrylate, trimethylolpropaneethoxylate triacrylate, and Bisphenol A ethoxylate dimethacrylate.

8. The lithium battery of claim 5 , wherein the inorganic particles include at least one of silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), titanium dioxide (TiO 2 ), titanium barium oxide (BaTiO 3 ), lithium oxide (Li 2 O), lithium fluoride (LiF), lithium hydroxide (LiOH), lithium nitride (Li 3 N), barium oxide (BaO), sodium oxide (Na 2 O), lithium carbonate (Li 2 CO 3 ), calcium carbonate (CaCO 3 ), lithium aluminate (LiAlO 2 ), titanium strontium oxide (SrTiO 3 ), tin oxide (SnO 2 ), cerium oxide (CeO 2 ), magnesium oxide (MgO), nickel oxide (NiO), calcium oxide (CaO), zinc oxide (ZnO), zinc peroxide (ZrO 2 ), and silicon carbide (SiC).

9. The lithium battery of claim 5 , wherein a mean diameter of the inorganic particles ranges from about 1 nm to about 10 μm.

Assignees

• Korea Electronics Telecomm

Inventors

• Lee Young-Gi
• Kim Kwang Man
• Shin Dong Ok
• Kang Kunyoung
• Lee Sang-Young
• Kil Eun-Hye
• Choi Keunho

Classifications

• H01M10/0565 Primary

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• H01M2300/0091

  in the form of mixtures · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• H01M2300/0025

  Organic electrolyte · CPC title

• Y02E60/122

  Cross-Sectional Technologies · mapped topic