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Sulfide-based solid-state battery module

A battery module and solid-like technology, which is applied in the direction of solid electrolyte, battery electrode, secondary battery, etc., can solve the problems of degradation and short battery life, and achieve the effect of inhibiting degradation

Inactive Publication Date: 2013-01-30
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, there is a problem that, since the sulfide-based solid electrolyte material has the property of easily reacting with moisture, in a battery using the sulfide-based solid electrolyte material, deterioration due to generation of hydrogen sulfide tends to occur, thereby battery life is short

Method used

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  • Sulfide-based solid-state battery module
  • Sulfide-based solid-state battery module
  • Sulfide-based solid-state battery module

Examples

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Embodiment

[0113] Under the temperature condition of 25°C, make copper foil, SUS foil and aluminum foil in hydrogen sulfide atmosphere (H 2 S concentration: 4%) was exposed for 24 hours.

[0114] image 3 (a) is a photograph of copper foil before hydrogen sulfide exposure, image 3 (b) is a photograph of copper foil after hydrogen sulfide exposure. Compare image 3 (a) and image 3 (b) It turns out that the copper foil was reddened by exposure to hydrogen sulfide, and it was found that severe corrosion occurred to the extent that it could be recognized visually.

[0115] image 3 (c) is a graph showing the X-ray photoelectron spectroscopy (X-ray Photoelectron Spectroscopy; hereinafter referred to as XPS) analysis results in the depth direction of copper after hydrogen sulfide exposure. image 3 (c) is a graph in which the vertical axis represents atomic concentration (Atomic Concentration (%)), and the horizontal axis represents sputtering depth (Sputter Depth (nm)). Depend on i...

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Abstract

Provided is a sulfide-based solid-state battery module that prevents degradation of a negative electrode by hydrogen sulfide. This sulfide-based solid state battery module is provided with a sulfide-based solid-state battery that is provided with a positive electrode, negative electrode and sulfide-based solid-state electrolyte interposed between this positive electrode and this negative electrode, as well as a battery case that accommodates this sulfide-based solid-state battery. This sulfide-based solid-state battery module is characterized by this negative electrode being positioned on the upper side of this positive electrode in the vertical direction and by a gas with a density lower than the hydrogen sulfide being contained in the battery case.

Description

technical field [0001] The present invention relates to a sulfide-based solid battery module that prevents degradation of a negative electrode caused by hydrogen sulfide. Background technique [0002] A secondary battery is a battery that can convert a decrease in chemical energy that occurs with a chemical reaction into electrical energy for discharge, and in addition, it can also be discharged by allowing a current to flow in the opposite direction when discharging. A battery that converts electrical energy into chemical energy for storage (recharging). Among secondary batteries, since lithium secondary batteries have high energy density, they are widely used as power sources for notebook personal computers, mobile phones, and the like. [0003] In a lithium secondary battery, when graphite (represented as C) is used as the negative electrode active material, the reaction of the following formula (I) will proceed at the negative electrode during discharge. [0004] Li x...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0565H01M10/0585
CPCY02E60/12H01M4/669H01M4/661H01M10/0463H01M2300/0068H01M10/0565H01M10/4235H01M10/0585H01M10/0562Y02E60/10Y02P70/50
Inventor 熊谷杏子铃木雄志
Owner TOYOTA JIDOSHA KK
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