All-solid-state battery

Patent metadata

Field	Value
Publication number	US-2016233553-A1
Application number	US-201415022716-A
Country	US
Kind code	A1
Filing date	Sep 12, 2014
Priority date	Sep 25, 2013
Publication date	Aug 11, 2016
Grant date	—

Abstract

An all-solid-state battery that makes it possible to improve the cycling properties is provided. The all-solid-state battery includes an anode; a cathode; a solid electrolyte layer that is arranged between the anode and the cathode; an anode collector that is connected to the anode; and a cathode collector that is connected to the cathode. In the all-solid-state battery, a metal layer is arranged between the anode and the anode collector and/or between the cathode and the cathode collector, and metal that does not undergo an electrochemical reaction with metal ions under a potential environment where an active material stores and releases the metal ions, and whose percent elongation is no less than 22% is used for the metal layer.

First claim

1 . (canceled)

2 . An all-solid-state battery comprising:
an anode that includes an anode active material; a cathode that includes a cathode active material; a solid electrolyte layer that is arranged between the anode and the cathode; an anode collector that is connected to the anode; and a cathode collector that is connected to the cathode, wherein a metal layer is arranged between the anode and the anode collector and/or between the cathode and the cathode collector, in a case where the metal layer is a metal layer in an anode side which is arranged between the anode and the anode collector, the metal layer in an anode side contains metal whose percent elongation is no less than 22%, and an inert metal layer in an anode side is arranged between the metal layer in an anode side and the anode, metal that does not undergo an electrochemical reaction with metal ions under a potential environment where the anode active material stores and releases the metal ions is used for the inert metal layer in an anode side, in a case where the metal layer is a metal layer in a cathode side which is arranged between the cathode and the cathode collector, the metal layer in a cathode side contains the metal whose percent elongation is no less than 22%, and an inert metal layer in a cathode side is arranged between the metal layer in a cathode side and the cathode, and metal that does not undergo an electrochemical reaction with metal ions under a potential environment where the cathode active material stores and releases the metal ions is used for the inert metal layer in a cathode side.

3 . The all-solid-state battery according to claim 2 , wherein
the metal whose percent elongation is no less than 22% is selected from Li, In, Zn, Al, Yb, Cd, Gd, Ca, Au, Ag, Cr, Sm, Dy, Zr, Sn, Ce, Tl, W, Ta, Ti, Fe, Tb, Cu, Th, Pb, Nb, Ni, Nd, Pt, V, Hf, Pd, Pr, Pm, Mn, Mo, La and Re.

4 . The all-solid-state battery according to claim 2 , wherein
the metal whose percent elongation is no less than 22% is selected from the group consisting of In and metal softer than In.

5 . The all-solid-state battery according to claim 2 , wherein
the anode active material is graphite, and the inert metal layer in an anode side includes metal selected from Li, Cu, Au, Ti, Fe, Nb and Ni.

6 . The all-solid-state battery according to claim 3 , wherein
the anode active material is graphite, and the inert metal layer in an anode side includes metal selected from Li, Cu, Au, Ti, Fe, Nb and Ni.

7 . The all-solid-state battery according to claim 4 , wherein
the anode active material is graphite, and the inert metal layer in an anode side includes metal selected from Li, Cu, Au, Ti, Fe, Nb and Ni.

8 . The all-solid-state battery according to claim 2 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

9 . The all-solid-state battery according to claim 3 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

10 . The all-solid-state battery according to claim 4 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

11 . The all-solid-state battery according to claim 5 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

12 . The all-solid-state battery according to claim 6 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

13 . The all-solid-state battery according to claim 7 , wherein
the cathode active material is LiCoO 2 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 , and the inert metal layer in a cathode side includes metal selected from Li, In, Zn, Al, Ca, Zr, Sn, W, Ti, Fe, Nb, Ni, V, Pd, Mn and Mo.

Assignees

• Toyota Motor Co Ltd

Inventors

• Yamasaki Hisatsugu
• Kato Yuki
• Ohtomo Takamasa
• Kawakami Masatsugu

Classifications

• H01M4/366

  as layered products · CPC title

• H01M4/587

  for inserting or intercalating light metals · 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

• 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

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title