Capacitor-assisted solid-state battery

Patent metadata

Field	Value
Publication number	US-2020036070-A1
Application number	US-201816048427-A
Country	US
Kind code	A1
Filing date	Jul 30, 2018
Priority date	Jul 30, 2018
Publication date	Jan 30, 2020
Grant date	—

Abstract

A capacitor-assisted, solid-state lithium-ion battery is formed by replacing at least one of the electrodes of the battery with a capacitor electrode of suitable particulate composition for the replaced battery particulate anode or cathode material. The solid-state electrodes typically contain solid-state electrode material and are separated with solid-state electrode material. In another embodiment the capacitor anode or cathode particles may be mixed with lithium-ion battery anode or cathode particles respectively. Preferably, the battery comprises at least two positively-charged electrodes and two negatively-charged electrodes, and the location and compositions of the capacitor material electrode(s) may be selected to provide a desired combination of energy and power.

First claim

1 . A capacitor-assisted, solid-state lithium-ion battery comprising a capacitor electrode which replaces a battery anode or battery cathode; the capacitor-assisted, solid-state lithium-ion battery being further characterized by, and comprising:
four like-shaped current collector foils, placed in parallel alignment, assembled with two outer-positioned current collectors and two inner-positioned current collectors, each current collector foil having two opposing surfaces for carrying an attached layer of particulate electrode materials, the two inner-positioned current collector foils having a layer of particles of an electrode material bonded to each opposing surface, and the outer-positioned current collector foils having a layer of particles of an electrode material bonded to at least their inward-facing surfaces, such that each layer of particles of an electrode material faces a layer of electrode material in a paired arrangement in the capacitor-assisted, solid-state lithium-ion battery in its assembled state; each pair of facing layers of electrode materials on adjacent, parallel-aligned current collectors being placed against a coextensive surface area of one of three layers of electrolyte particles, such that the current collectors of a first pair of electrodes are electrically connected to serve as positively-charged cathodes during discharge of the capacitor-assisted, solid-state lithium-ion battery, and the current collectors of a second pair of electrodes are electrically connected to serve as negatively-charged anodes during discharge of the capacitor-assisted, lithium-ion battery; the capacitor-assisted, lithium-ion battery comprising at least one electrode layer of capacitor anode material particles or one electrode layer of capacitor cathode materials, or one layer of each.

2 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which at least one layer of capacitor anode material particles is mixed with lithium-ion battery anode material particles.

3 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which at least one layer of capacitor cathode material particles is mixed with lithium-ion battery cathode material particles.

4 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes at least one current collector carrying attached layers of capacitor anode material particles mixed with solid electrolyte materials, each capacitor anode layer facing an electrode layer of lithium-ion battery cathode material mixed with particles of a solid electrolyte.

5 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes at least one current collector carrying attached layers of capacitor cathode material particles mixed with solid electrolyte materials, each capacitor cathode layer facing an electrode layer of lithium-ion battery anode material mixed with particles of a solid electrolyte.

6 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes a capacitor anode comprising a layer of capacitor anode material particles mixed with solid electrolyte materials bonded to opposing sides of a current collector, one layer of the capacitor anode material facing an opposing layer of lithium-ion battery cathode material and the other layer of capacitor anode material facing a layer of capacitor cathode material.

7 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes a capacitor cathode comprising a layer of capacitor cathode material particles mixed with solid electrolyte materials bonded to opposing sides of a current collector, one layer of the capacitor cathode material facing an opposing layer of lithium-ion battery anode material and the other layer of capacitor cathode material facing a layer of capacitor anode material.

8 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes an asymmetric anode electrode formed of a layer of particles of lithium-ion battery anode materials, mixed with particles of an electrolyte, bonded to one side of a current collector and a layer of particles of capacitor anode material bonded to the other side of the current collector, each layer of the asymmetric anode facing an opposing electrode layer comprising lithium-ion battery cathode material.

9 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 which includes an asymmetric cathode electrode formed of particles of lithium-ion battery cathode materials, mixed with particles of an electrolyte, bonded to one side of a current collector and particles of capacitor cathode material bonded to the other side of the current collector, each layer of the asymmetric cathode facing an opposing electrode layer comprising lithium-ion battery anode material.

10 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which the solid electrolyte material facing and engaging a capacitor electrode material is of a composition that is adapted for the capacitor electrode material, and different from the solid electrolyte material, engaging two layers of battery electrode materials.

11 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which at least one layer of electrode material bonded to a current collector is a mixture comprising particles of capacitor anode material, lithium-ion battery anode material, and particles of a solid electrolyte.

12 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which at least one layer of electrode material bonded to a current collector is a mixture comprising particles of capacitor cathode material, lithium-ion battery cathode material, and particles of a solid electrolyte.

13 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which (i) a capacitor anode formed of opposing layers of capacitor anode particles mixed with particles of a first solid electrolyte battery composition faces electrode layers formed of particles of lithium-ion battery cathode material mixed with particles of the first electrolyte and (ii) a cathode layer of lithium-ion battery cathode particles, mixed with particles of a second solid electrolyte composition faces an anode layer of lithium-ion battery anode particles mixed with particles of the second solid electrolyte composition.

14 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 13 in which the particles of the first electrolyte are polyethylene oxide/LiClO 4 solid polymer electrolyte material and the particles of the second solid electrolyte composition are about 75 molar percent Li 2 S and 25 molar percent P 2 S 5 .

15 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 1 in which (i) a capacitor cathode formed of opposing layers of capacitor cathode particles mixed with particles of a first solid electrolyte battery composition face electrode layers formed of particles of lithium-ion battery anode material mixed with particles of the first electrolyte and (ii) a anode layer of lithium-ion battery anode particles, mixed with particles of a second solid electrolyte composition faces a cathode layer of lithium-ion battery cathode particles mixed with particles of the second solid electrolyte composition.

16 . A capacitor-assisted, solid-state lithium-ion battery as stated in claim 15 in which the particles of the first electrolyte are polyethylene oxide/LiClO 4 solid polymer electrolyte material and the particles of the second solid electrolyte comp

Assignees

• Gm Global Tech Operations Llc

Inventors

• Li Zhe
• Rich Dave G
• Liu Haijing
• Kong Dewen
• Zeng Sherman H

Classifications

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01G11/22

  Electrodes · CPC title

• H01G11/66

  Current collectors · CPC title

• H01M10/0525 Primary

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

• H01M16/00 Primary

  Structural combinations of different types of electrochemical generators · CPC title