Electrically conductive hybrid membrane, making method thereof, secondary battery and electronic device comprising the same

Patent metadata

Field	Value
Publication number	US-2020235362-A1
Application number	US-202016734549-A
Country	US
Kind code	A1
Filing date	Jan 6, 2020
Priority date	Jan 21, 2019
Publication date	Jul 23, 2020
Grant date	—

Abstract

An electrically conductive hybrid membrane, including a solid membrane substrate including a curable material; and electrically conductive particle disposed on the solid membrane substrate, wherein the solid membrane substrate has an elastic modulus of about 10 MPa to about 1000 MPa, and the electrically conductive particle is exposed on both sides of the solid membrane substrate.

First claim

What is claimed is:

1 . An electrically conductive hybrid membrane, comprising:
a solid membrane substrate comprising a curable material; and an electrically conductive particle disposed on the solid membrane substrate, wherein the solid membrane substrate has an elastic modulus of about 10 megaPascals to about 1000 megaPascals, and the electrically conductive particle is exposed on both sides of the solid membrane substrate.

2 . The electrically conductive hybrid membrane of claim 1 , wherein the solid membrane substrate has a resistivity of 10 ohm-meters to 10 25 ohm-meters.

3 . The electrically conductive hybrid membrane of claim 1 , wherein the curable material comprises of a thermosetting material, an ultraviolet (UV) curable material, a moisture curable material, ora combination thereof.

4 . The electrically conductive hybrid membrane of claim 1 , wherein the curable material has tackiness of about 1 Newtons per square centimeter to about 20 Newtons per square centimeter.

5 . The electrically conductive hybrid membrane of claim 4 , wherein conductive particles are arranged in hexagonal shape.

6 . The electrically conductive hybrid membrane of claim 1 , wherein the curable material comprises an acryl compound, an epoxy compound, a urethane compound, a phenol compound, or a combination thereof.

7 . The electrically conductive hybrid membrane of claim 1 , wherein a thickness of the solid membrane substrate is about 20 percent to about 90 percent of a diameter of the electrically conductive particle.

8 . The electrically conductive hybrid membrane of claim 1 , further comprising an ion conductive particle.

9 . The electrically conductive hybrid membrane of claim 8 , wherein the ion conductive particle conducts at least one ion of a lithium ion, a sodium ion, a proton, a potassium ion, an iron ion, a zinc ion, a magnesium ion, and a potassium ion.

10 . The electrically conductive hybrid membrane of claim 8 , wherein the ion conductive particle has an ion conductivity of about 1×10 −5 Siemens per centimeter to about 1×10 −3 Siemens per centimeter.

11 . The electrically conductive hybrid membrane of claim 8 , wherein the ion conductive particle comprises at least one of ZrO 2 , AlO 3 , and a compound represented by Chemical Formula 1 to Chemical Formula 4
Li 3 La (2/3−x) TiO 3 ,  Chemical Formula 1
Li y La 3 M 1 2 O 12 ,  Chemical Formula 2
Li (2+2z) Zn (1−z) GeO 4 ,  Chemical Formula 3
Li w M 2 2 (PO 4 ) 3 ,  Chemical Formula 4

wherein, in Chemical Formula 1 to Chemical Formula 4,
M 1 is at least one element of zirconium (Zr), niobium (Nb), tantalum (Ta), antimony (Sb), and bismuth (Bi),
M 2 is at least one element of Aluminum (Al), germanium (Ge), titanium (Ti), hafnium (Hf), and zirconium (Zr),
0≤w≤2, 0≤x≤2/3, 5≤y≤7, and
0≤z<1.

12 . The electrically conductive hybrid membrane of claim 8 , wherein the electron conductive particle comprises an elastomer and a metal layer disposed on the surface of the elastomer.

13 . The electrically conductive hybrid membrane of claim 10 , wherein the elastomer comprises a polystyrene compound, an epoxy compound, a polyimide compound, a phenol compound, or a combination thereof.

14 . The electrically conductive hybrid membrane of claim 10 , wherein the metal layer comprises gold (Au), silver (Ag), nickel (Ni), palladium (Pd), copper (Cu), or a combination thereof.

15 . The electrically conductive hybrid membrane of claim 10 , wherein the metal layer comprises two or more layers, and
the two or more layers comprise different metals.

16 . A method of making the electrically conductive hybrid membrane of claim 1 , the method comprising:
disposing the electrically conductive particle on a membrane substrate-forming layer, pressing the membrane substrate-forming layer and the electrically conductive particle, and curing the membrane substrate-forming layer to make the electrically conductive hybrid membrane.

17 . The method of claim 16 , wherein the pressing is performed at a temperature of about 20° C. to about 300° C.

18 . The method of claim 17 , wherein the pressing is performed at a pressure of about 1 megaPascal to about 100 megaPascals and at a temperature of about 50° Celsius to about 300° Celsius.

19 . The method of claim 17 , wherein before the curing, the elastic modulus of the pressed membrane substrate-forming layer is less than or equal to about 100 kiloPascals.

20 . The method of claim 16 , wherein before the pressing, a peel strength of the membrane substrate-forming layer is about 0.05 Newton/25 millimeters to about 100 Newtons per 25 millimeters.

21 . The method of claim 16 , wherein the curing comprises at least one of an ultraviolet (UV) curing process, a heat curing process, and a moisture curing process.

22 . The method of claim 16 , wherein when a thickness t of the membrane substrate-forming layer before disposing of the electrically conductive particles, and a diameter D of the electrically conductive particles satisfy the relationship of Equation 1:
t≤ 0.4 ×D.   Equation 1

23 . A secondary battery comprising
a positive electrode; a negative electrode; and the electrically conductive hybrid membrane of claim 1 disposed between the positive electrode and the negative electrode.

24 . An electronic device comprising the electrically conductive hybrid membrane of claim 1 .

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hamamoto Nobuo
• Kitajima Shintaro

Classifications

• H10W72/354

  comprising polymers · CPC title

• H10W72/353

  not comprising solid metals or solid metalloids, e.g. ceramics · CPC title

• H10W72/325

  Die-attach connectors having a filler embedded in a matrix · CPC title

• H10W72/01351

  Changing the shapes of die-attach connectors · CPC title

• H01M4/626

  Metals · CPC title