All-solid secondary cell, outer cladding material for all-solid secondary cell, and method for manufacturing said all-solid secondary cell

A technology for secondary batteries and manufacturing methods, applied in secondary batteries, battery case/sleeve materials, battery electrodes, etc., can solve problems such as liquid leakage, and achieve the effects of high discharge capacity density, low voltage, and excellent cycle characteristics

Pending Publication Date: 2020-05-01
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, organic electrolytes are prone to liquid leakage and, due to overcharging or overdischarging, may be ignited due to a short circuit inside the battery, so further improvements in safety and reliability are required.

Method used

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  • All-solid secondary cell, outer cladding material for all-solid secondary cell, and method for manufacturing said all-solid secondary cell
  • All-solid secondary cell, outer cladding material for all-solid secondary cell, and method for manufacturing said all-solid secondary cell
  • All-solid secondary cell, outer cladding material for all-solid secondary cell, and method for manufacturing said all-solid secondary cell

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Effect test

Embodiment

[0186] Hereinafter, the present invention will be described in further detail based on examples. In addition, the present invention is not limited thereto and interpreted. In the following examples, "parts" and "%" showing the composition are based on mass unless otherwise specified. Also, "room temperature" means 25°C.

[0187] -Synthesis of sulfide-based inorganic solid electrolyte (Li-P-S-based glass)-

[0188]As a sulfide-based inorganic solid electrolyte, refer to T.Ohtomo, A.Hayashi, M.Tatsumisago, Y.Tsuchida, S.HamGa, K.Kawamoto, Journal of Power Sources, 233, (2013), pp231-235 and A. Hayashi, S. Hama, H. Morimoto, M. Tatsumisago, T. Minami, Chem. Lett., (2001), non-patent literature of pp872-873, Li-P-S type glass was synthesized.

[0189] Specifically, weigh 2.42g lithium sulfide (Li 2 S, Aldrich.Inc manufacture, purity > 99.98%), 3.90g phosphorus pentasulfide (P 2 S 5 , manufactured by Aldrich.Inc, purity>99%), put into an agate mortar, and mixed for 5 minutes ...

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Abstract

Provided are: an all-solid secondary cell that comprises a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer, the all-solid secondarycell being covered with an outer cladding material layer, wherein at least a part of the outer cladding material layer is a rubber covering layer having a gas permeation coefficient of less than 40 cc*20[mu]m / m2*24h*atm; an outer cladding material for an all solid secondary cell; and a method for manufacturing an all-solid secondary cell.

Description

technical field [0001] The invention relates to an all-solid secondary battery, an exterior material for the all-solid secondary battery and a manufacturing method for the all-solid secondary battery. Background technique [0002] A lithium ion secondary battery has a negative electrode, a positive electrode, and an electrolyte sandwiched between the negative electrode and the positive electrode, and is capable of reciprocating lithium ions between the two electrodes for charging and discharging. Conventionally, in lithium ion secondary batteries, an organic electrolytic solution is used as an electrolyte. However, organic electrolytes are prone to liquid leakage and may be ignited due to short-circuiting inside the battery due to overcharging or overdischarging, and further improvements in safety and reliability are required. [0003] Under such circumstances, an all-solid-state secondary battery using an inorganic solid electrolyte instead of an organic electrolyte soluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M2/02H01M10/0562H01M50/121H01M50/131H01M50/133
CPCH01M10/0562Y02E60/10H01M10/0565H01M2300/0065H01M2220/20H01M10/0525Y02P70/50H01M50/133H01M50/121H01M50/131H01M50/124H01M4/62H01M2300/0068H01M10/049H01M2004/027H01M2004/028
Inventor 望月宏显牧野雅臣三村智则
Owner FUJIFILM CORP
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