All-solid-state battery using sodium ion intercalation cathode with Li/Na exchanging layer

Patent metadata

Field	Value
Publication number	US-10483586-B2
Application number	US-201515771566-A
Country	US
Kind code	B2
Filing date	Dec 17, 2015
Priority date	Dec 17, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

An all-solid-state battery includes a mixture layer which has a physical mixture of a sulfide-based sodium-containing solid electrolyte material and a sulfide-based lithium-containing solid electrolyte material.

First claim

The invention claimed is:

1. An all-solid-state battery comprising the following elements in order:
a positive electrode active material layer ( 5 ) comprising a sodium-containing cathode material;
a solid electrolyte layer ( 4 ) comprising a sulfide-based sodium-containing solid electrolyte material;
a sulfide-based mixture layer ( 3 );
a solid electrolyte layer ( 2 ) comprising a sulfide-based lithium-containing solid electrolyte material;
a negative electrode active material layer ( 1 ) comprising a lithium-containing anode material,
wherein the mixture layer ( 3 ) comprises a physical mixture of a sulfide-based sodium-containing solid electrolyte material and a sulfide-based lithium-containing solid electrolyte material.

2. The all-solid-state battery according to claim 1 , wherein the sulfide-based sodium-containing solid electrolyte material, contained in layer ( 4 ) and/or as part of the mixture of layer ( 3 ), contains, in addition to sodium (Na) and sulfur (S), one or more of the elements phosphorus (P), silicon (Si) and germanium (Ge).

3. The all-solid-state battery according to claim 1 , wherein the sulfide-based sodium-containing solid electrolyte material, contained in layer ( 4 ) and/or as part of the mixture of layer ( 3 ), is one or materials selected from the group consisting of: Na 3 PS 4 , Na 3 PS 4 —Na 4 SiS 4 , Na 2 S—P 2 S 5 , Na 2 S—SiS 2 , and Na 2 S—GeS 2 .

4. The all-solid-state battery according to claim 1 , wherein the sulfide-based lithium-containing solid electrolyte material, contained in layer ( 2 ) and/or as part of the mixture of layer ( 3 ), contains the element phosphorus (P) in addition to lithium (Li) and sulfur (S).

5. The all-solid-state battery according to claim 1 , wherein the sulfide-based lithium-containing solid electrolyte material, contained in layer ( 2 ) and/or as part of the mixture of layer ( 3 ), is one or materials selected from the group consisting of: Li 3 PS 4 , LiX—Li 3 PS 4 (X=Cl, Br, I), Li 10 SiP 2 S 12 , Li 10 GeP 2 S 12 , Li 10 SnP 2 S 12 , and Li 6 PS 5 X (X=Cl, Br, I).

6. The all-solid-state battery according to claim 1 , wherein the atomic ratio of Na:Li is the mixture layer is expressed as y:1-y, wherein 0.1≤y≤0.9.

7. The all-solid-state battery according to claim 1 , wherein the mixture layer comprises a mixture of Na 3 PS 4 and Li 3 PS 4 , and the weight ratio Na 3 PS 4 :Li 3 PS 4 expressed as x 100-x (in wt %) is 10≤x≤90.

8. The all-solid-state battery according to claim 1 , wherein the sodium-containing cathode material of the positive electrode active material layer ( 5 ) is one or materials selected from the group consisting of: a compound which has a layer structure denoted by general formula NaMO 2 , wherein M is at least one kind of transition metal element, Ni, Mn, and/or Co; a compound denoted by general formula Na 3 M 2 (PO 4 ) 3 , wherein M is at least one kind of transition metal element, V, and/or Cr; a compound which has a polyanion of P 2 O 7 in its structure denoted by general formula Na x M 3 (PO 4 ) 2 P 2 O 7 wherein M is at least one kind of transition metal element, Ni and/or Mn; a compound which has a fluorine in its structure denoted by general formula Na 3 M 2 (PO 4 ) 2 F 3 wherein M is at least one kind of transition metal element.

9. The all-solid-state battery according to claim 1 , wherein the lithium-containing anode material of the negative electrode active material layer ( 1 ) is one or materials selected from the group consisting of: carbon active material; black lead; meso carbon micro beads (MCMB); highly ordered/oriented pyrolytic graphite (HOPG); hard carbon; soft carbon; an alloy; In; Al; Si; Sn; oxide stock materials.

Assignees

• Toyota Motor Europe

Inventors

• Katoh Yuki
• Yoshida Jun

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M10/054

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M2300/0091

  in the form of mixtures · CPC title

• H01M2300/0094

  in the form of layered products, e.g. coatings · CPC title

• H01M2300/0068

  inorganic · CPC title