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Method for manufacturing all solid electrode having solid electrolyte concentration gradient

A technology of solid electrolyte and solid electrolyte layer, which is applied in the manufacture of non-aqueous electrolyte battery electrodes, non-aqueous electrolyte batteries, and electrolyte batteries, and can solve problems such as no examples or preparation methods.

Active Publication Date: 2016-01-27
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, continuous concentration changes can be applied to these layers, but no specific examples or preparation methods have been suggested so far

Method used

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  • Method for manufacturing all solid electrode having solid electrolyte concentration gradient
  • Method for manufacturing all solid electrode having solid electrolyte concentration gradient
  • Method for manufacturing all solid electrode having solid electrolyte concentration gradient

Examples

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preparation example Construction

[0029] Additionally, the active material and solid electrolyte may be included in a volume ratio of about 1:1 to 3:7 in an aerosol can with a first generator, and may be included in a 7:3 ratio in an aerosol can with a second generator. The volume ratio includes active material and solid electrolyte. Specifically, the preparation method may include: increasing the flow rate of the first generator coated on the surface of the solid electrolyte; maintaining the flow rate of the first generator; increasing the flow rate of the second generator while reducing the flow rate of the first generator until The flow rate becomes about 0; and the flow rate of the second generator is maintained.

[0030] Alternatively, only the solid electrolyte may be included in the aerosol can with the first generator, and the active material and solid electrolyte may be included in a volume ratio of about 7:3 in the aerosol can with the second generator. Specifically, the preparation method may inclu...

Embodiment 1

[0039] Example 1 ( Figure 6 )

[0040] Preparation of cathode active material (LiCoO 2 ), anode active material (graphite) and solid electrolyte (sulfide-based Li 2 S-P 2 S 5 ). In order to coat each of the two poles with an active material layer having a concentration gradient, the aerosol generator 1 is filled with a composition of the active material and the solid electrolyte at a ratio of about 30:70 (v / v), and the aerosol is generated Container 2 is filled with a composition of active material and solid electrolyte at a ratio of about 70:30 (v / v). When the aerosol coating is applied on the solid electrolyte electrode surface, only the flow of generator 1 is generated initially, and the flow of generator 2 is increased while gradually reducing the flow of generator 1 . Then, the flow of generator 1 is stopped and only the flow of generator 2 is maintained. Thus, an electrode was obtained in which the composition having an initial active material ratio of about 30...

Embodiment 2

[0041] Example 2 ( Figure 7 )

[0042] Preparation of cathode active material (LiCoO 2 ), anode active material (graphite) and solid electrolyte (sulfide-based Li 2 S-P 2 S 5 ). In order to coat each of the two poles with an active material layer having a concentration gradient, the aerosol generator 1 is filled with a composition of the active material and a solid electrolyte at a ratio of about 50:50 (v / v), and the aerosol is generated Container 2 is filled with a composition of active material and solid electrolyte at a ratio of about 70:30 (v / v). When the aerosol coating is applied on the solid electrolyte electrode surface, only the flow of generator 1 is generated initially, and the flow of generator 2 is increased while gradually reducing the flow of generator 1 . Then, the flow of generator 1 is stopped and only the flow of generator 2 is maintained. Thus, an electrode was obtained in which the composition having an initial active material ratio of about 50 v...

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Abstract

An all solid electrode structure having a solid electrolyte concentration gradient is provided and a method of improving an output performance is provided with improved ion diffusion and obtaining a high capacity battery, by disposing an anode or cathode electrode having a substantially continuous concentration gradient to have a greater solid electrolyte ratio as being closer to a solid electrolyte interface and have a greater active material ratio as being close to a current collector interface. The active material / solid electrolyte ratio of anode and cathode active material layers has a concentration gradient by a single process using an aerosol deposition method.

Description

technical field [0001] The present invention relates to an all-solid electrode structure with a solid electrolyte concentration gradient, and to a method of improving the output performance of an all-solid electrode due to improved ion diffusion and obtaining a high-capacity battery by arranging an anode or cathode with a continuous concentration gradient as having a larger solid electrolyte ratio closer to the solid electrolyte interface and a larger active material ratio closer to the current collector interface, so that by using an aerosol deposition method through a single process, the anode active material layer and the cathode active material layer The ratio of active material to solid electrolyte has a concentration gradient. Background technique [0002] Currently commercially available lithium batteries use electrolytes including flammable organic solvents, and therefore, it may be necessary to install a safety device that suppresses temperature rise at the time of ...

Claims

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Application Information

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IPC IPC(8): H01M4/139
CPCH01M4/0419H01M4/13H01M4/131H01M4/133H01M4/139H01M4/1391H01M4/1393H01M4/525H01M4/587H01M10/0525H01M10/0562H01M10/0585H01M2004/021Y02E60/10Y10T29/4911Y02P70/50H01M10/058H01M10/0413H01M10/0436
Inventor 金东熺金兑映柳京汉
Owner HYUNDAI MOTOR CO LTD
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