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Electrode sheet, all-solid battery, manufacturing method for electrode sheet, and manufacturing method for all-solid battery

An all-solid-state battery and manufacturing method technology, applied in the field of electrode sheets, can solve the problems of reduced battery capacity, increased internal resistance of the battery, and poor contact state, and achieve the effects of interface resistance suppression, low internal resistance, and good contact state

Inactive Publication Date: 2019-10-25
KURASHIKI BOSEKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its form is granular, so the contact state with the active material particles is poor, which increases the internal resistance of the battery and reduces the battery capacity.

Method used

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  • Electrode sheet, all-solid battery, manufacturing method for electrode sheet, and manufacturing method for all-solid battery
  • Electrode sheet, all-solid battery, manufacturing method for electrode sheet, and manufacturing method for all-solid battery
  • Electrode sheet, all-solid battery, manufacturing method for electrode sheet, and manufacturing method for all-solid battery

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Embodiment

[0109] First, the inventors found that the lithium ion conductivity between the inorganic solid electrolyte particles was effectively developed by forming a polymer solid electrolyte between the inorganic solid electrolyte particles in the spacer layer by the following method. That is, after the inorganic solid electrolyte layer using polyvinylidene fluoride (PVdF) as a binder is formed on the aluminum foil, the polymer solid electrolyte solution is soaked into the inorganic solid electrolyte layer, and the aluminum foil is placed in contact thereon. Afterwards, the polymer cross-linking in the polymer solid electrolyte solution was hardened by a polymerization reaction to form an all-solid electrolyte layer in which the polymer solid electrolyte penetrated into the inorganic solid electrolyte particles and its ion conductivity was evaluated. Here, the inorganic solid electrolyte particles use Li particles with a particle size of about 1 μm. 1+x al y Ge 2-y (PO 4 ) 3 (LAGP...

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Abstract

Provided is an electrode sheet that, using a high polymer solid electrolyte, can be used in an all-solid battery that has a low internal resistance and a low susceptibility to internal shorting. An electrode sheet 10 comprises: a current collector 11; an electrode 12 that is formed on the current collector and that contains active material particles 13 and a high polymer solid electrolyte 14 embedded in the spaces between the active material particles; and a separator layer 15 that is formed on the electrode and that contains inorganic solid electrolyte particles 16 and the high polymer solidelectrolyte 14 which is embedded in the spaces between the inorganic solid electrolyte particles.

Description

technical field [0001] The invention relates to an electrode sheet using an inorganic solid electrolyte and a polymer solid electrolyte, and a manufacturing method thereof. In addition, the present invention relates to an all-solid-state battery using an inorganic solid-state electrolyte and a polymer solid-state electrolyte, and a manufacturing method thereof. Background technique [0002] Development of a solid-state lithium ion secondary battery using a solid-state electrolyte instead of a liquid electrolytic solution is actively progressing. By using a solid electrolyte, it is possible to obtain excellent characteristics such as thinning of the battery and no leakage of the electrolytic solution. As such solid electrolytes, inorganic solid electrolytes, polymer solid electrolytes, and polymer gel electrolytes are known. [0003] Inorganic solid electrolytes have been developed in recent years and have excellent ion conductivity. However, since its form is granular, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/056H01M4/62H01M10/0585
CPCH01M4/62Y02E60/10H01M50/446H01M10/0562H01M10/0525Y02P70/50H01M4/13H01M50/46H01M10/0585H01M10/056H01M4/139H01M4/0404H01M10/052H01M2300/0068H01M2300/0082
Inventor 东昇
Owner KURASHIKI BOSEKI KK
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