All-solid state secondary battery, particles for all-solid state secondary battery, solid electrolyte composition for all-solid state secondary battery, and electrode sheet for all-solid state secondary battery, and methods for manufacturing same

Patent metadata

Field	Value
Publication number	US-2018287211-A1
Application number	US-201816002060-A
Country	US
Kind code	A1
Filing date	Jun 7, 2018
Priority date	Dec 25, 2015
Publication date	Oct 4, 2018
Grant date	—

Abstract

Provided are an all-solid state secondary battery including inorganic solid electrolyte particles having conductivity for ions of metals belonging to Group I or II of the periodic table; and electrode active material particles, in which a proportion of a nitrogen element in an element composition of a surface of at least one kind of the inorganic solid electrolyte particles or the electrode active material particles is 0.1 atm % or more, particles for an all-solid state secondary battery, a solid electrolyte composition for an all-solid state secondary battery for which the particles are used, an electrode sheet for an all-solid state secondary battery, and an all-solid state secondary battery, and methods for manufacturing the same.

First claim

What is claimed is:

1 . An all-solid state secondary battery comprising:
inorganic solid electrolyte particles having conductivity for ions of metals belonging to Group I or II of the periodic table; and electrode active material particles, wherein a proportion of a nitrogen element in an element composition of a surface of at least one kind of the inorganic solid electrolyte particles or the electrode active material particles is 0.1 atm % or more.

2 . The all-solid state secondary battery according to claim 1 , further comprising:
auxiliary conductive agent particles, wherein a proportion of a nitrogen element in an element composition of a surface of at least one kind of the inorganic solid electrolyte particles, the electrode active material particles, or the auxiliary conductive agent particles is 0.1 atm % or more.

3 . The all-solid state secondary battery according to claim 1 ,
wherein the proportion of the nitrogen element in the element composition of the particle surface is set to 0.1 atm % or more by an actinic ray.

4 . The all-solid state secondary battery according to claim 1 ,
wherein the inorganic solid electrolyte particles are oxide-based or sulfide-based inorganic solid electrolyte particles.

5 . The all-solid state secondary battery according to claim 1 ,
wherein the electrode active material particles are selected from the group consisting of electrode active material particles represented by any one of Formulae (B1) to (B5) and electrode active material particles belonging to (B6),
Li a1 M 1 O b1   Formula (B1)

Li c1 M 2 m1 O d1   Formula (B2)

Li e1 M 3 m2 (PO 4 ) f1   Formula (B3)

Li g1 M 4 (PO 4 ) h1 X i1   Formula (B4)

Li j1 M 5 (SiO 4 ) k1   Formula (B5)

(B6) a carbonaceous material, tin, silicon, indium, and oxides and sulfides thereof in Formula (B1), M 1 represents a metal including at least one of Co, Ni, Fe, Mn, Cu, or V, a1 represents 0 to 1.2, and b1 represents 1 to 3, in Formula (B2), m1 represents an integer of 2 to 8, a plurality of M 2 's each independently represents a metal including at least one of Co, Ni, Fe, Mn, Cu, Cr, or V, c1 represents 0 to 2, and d1 represents 3 to 8, in Formula (B3), M 3 represents a metal including at least one of V, Ti, Cr, Mn, Fe, Co, Ni, or Cu, m2 represents an integer of 1 to 8, e1 represents 0.1 to 3, and f1 represents 1 to 5; and in a case in which a plurality of M 3 's is present, the plurality of M 3 's may be identical to or different from each other, in Formula (B4), M 4 represents a metal including at least one of V, Ti, Cr, Mn, Fe, Co, Ni, or Cu, X represents a halogen atom, g1 represents 0.1 to 3, h1 represents 1 to 5, and i1 represents 0.1 to 5, and in Formula (B5), M 5 represents a metal including at least one of Co, Fe, Mn, Ni, Cu, or V, j1 represents 0 to 3, and k1 represents 1 to 5.

6 . The all-solid state secondary battery according to claim 1 ,
wherein the proportion of the nitrogen element in the element composition of the surface of at least one kind of the particles is 0.1 atm % or more, and one or more Raman spectral spectrum peaks are detected in at least one range of 3,200 cm −1 to 3,800 cm −1 , 2,000 cm −1 to 2,280 cm −1 , 1,500 cm −1 to 1,800 cm −1 , or 1,020 cm −1 to 1,250 cm −1 .

7 . The all-solid state secondary battery according to claim 1 , further comprising:
a binder.

8 . The all-solid state secondary battery according to claim 7 ,
wherein the binder has an acidic group.

9 . A method for manufacturing the all-solid state secondary battery according to claim 1 , comprising:
a step of setting the proportion of the nitrogen element in the element composition of the particle surface to 0.1 atm % or more by an actinic ray.

10 . The method for manufacturing the all-solid state secondary battery according to claim 9 ,
wherein the actinic ray is plasma generated from a gas of any one of nitrogen, oxygen, hydrogen, carbon dioxide, ammonia, helium, and argon or a gas mixture of two or more thereof.

11 . The method for manufacturing the all-solid state secondary battery according to claim 10 ,
wherein the plasma is low-temperature atmospheric pressure plasma.

12 . Particles for an all-solid state secondary battery which are electrode active material particles selected from the group consisting of inorganic solid electrolyte particles having conductivity for ions of metals belonging to Group I or II of the periodic table, auxiliary conductive agent particles or electrode active material particles represented by any one of Formulae (B1) to (B5), and electrode active material particles belonging to (B6),
wherein a proportion of a nitrogen element in an element composition of particle surface is 0.1 atm % or more,
Li a1 M 1 O b1   Formula (B1)

Li c1 M 2 m1 O d1   Formula (B2)

Li e1 M 3 m2 (PO 4 ) f1   Formula (B3)

Li g1 M 4 (PO 4 ) h1 X i1   Formula (B4)

Li j1 M 5 (SiO 4 ) k1   Formula (B5)

(B6) a carbonaceous material, tin, silicon, indium, and oxides and sulfides thereof in Formula (B1), M 1 represents a metal including at least one selected from the group consisting of Co, Ni, Fe, Mn, Cu, and V, a1 represents 0 to 1.2, and b1 represents 1 to 3, in Formula (B2), m1 represents an integer of 2 to 8, a plurality of M 2 's each independently represents a metal including at least one selected from the group consisting of Co, Ni, Fe, Mn, Cu, Cr, and V, c1 represents 0 to 2, and d1 represents 3 to 8, in Formula (B3), M 3 represents a metal including at least one selected from the group consisting of V, Ti, Cr, Mn, Fe, Co, Ni, and Cu, m2 represents an integer of 1 to 8, e1 represents 0.1 to 3, and f1 represents 1 to 5; and in a case in which a plurality of M 3 's is present, the plurality of M 3 's may be identical to or different from each other, in Formula (B4), M 4 represents a metal including at least one selected from the group consisting of V, Ti, Cr, Mn, Fe, Co, Ni, and Cu, X represents a halogen atom, g1 represents 0.1 to 3, h1 represents 0.1 to 5, and i1 represents 0.1 to 5, and in Formula (B5), M 5 represents a metal including at least one selected from the group consisting of Co, Fe, Mn, Ni, Cu, and V, j1 represents 0 to 3, and k1 represents 1 to 5.

13 . A method for manufacturing the particles for an all-solid state secondary battery according to claim 12 , comprising:
a step of setting the proportion of the nitrogen element in the element composition of the particle surface to 0.1 atm % or more by an actinic ray.

14 . A solid electrolyte composition for an all-solid state secondary battery which is used for the all-solid state secondary battery according to claim 1 , the solid electrolyte composition comprising:
inorganic solid electrolyte particles having conductivity for ions of metals belonging to Group I or II of the periodic table; and electrode active material particles, wherein a proportion of a nitrogen element in an element composition of a surface of at least one kind of the inorganic solid electrolyte particles or the electrode active material particles is 0.1 atm % or more.

15 . The solid electrolyte composition for an all-solid state secondary battery according to claim 14 , further comprising:
auxiliary conductive agent particles, wherein a proportion of a nitrogen element in an element composition of a surface of at least one kind of the inorganic solid electrolyte particles, the electrode active material particles, or the auxiliary conductive agent particles is 0.1 atm % or more.

16 . A method for manufacturing the solid electrolyte

Assignees

• Fujifilm Corp

Inventors

• Makino Masaomi
• Mochizuki Hiroaki

Classifications

• H01M4/625

  Carbon or graphite · CPC title

• H01M10/0585 Primary

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title