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Negative electrode mixture composite for fluoride ion secondary battery, negative electrode and secondary battery for fluoride ion secondary battery using composite, and method for producing composite

A fluoride ion, secondary battery technology, used in secondary batteries, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problem of inability to provide negative electrode active material defluorination/refluorination reactions, etc., to improve energy density Effect

Pending Publication Date: 2022-05-17
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, under the constraints of -2.41V, which is the reduction potential window of LBF, the current situation is that the defluorination / refluorination reaction of the negative electrode active material cannot be provided if this overvoltage is taken into consideration.

Method used

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  • Negative electrode mixture composite for fluoride ion secondary battery, negative electrode and secondary battery for fluoride ion secondary battery using composite, and method for producing composite
  • Negative electrode mixture composite for fluoride ion secondary battery, negative electrode and secondary battery for fluoride ion secondary battery using composite, and method for producing composite
  • Negative electrode mixture composite for fluoride ion secondary battery, negative electrode and secondary battery for fluoride ion secondary battery using composite, and method for producing composite

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Embodiment

[0124] Next, examples and the like of the present invention will be described, but the present invention is not limited to these examples and the like.

[0125]

[0126] In Examples 1 to 4, aluminum as the negative electrode active material, CeBaF as the fluoride ion-conducting fluoride 2.95 , Acetylene black as a conductive auxiliary agent, and a negative electrode compound composite body for a fluoride ion secondary battery is produced.

[0127] [mixing process]

[0128] Weigh the nanoparticle-shaped aluminum and Ce shown in Table 1 as shown in Table 1 0.95 Ba 0.05 f 2.95 , and acetylene black. After weighing, put aluminum into a ball mill container made of silicon nitride (manufactured by Fritsh, Germany, PL-7 special container, internal volume: 45cc), and then put Ce 0.95 Ba 0.05 f 2.95 , and acetylene black. Furthermore, 40 grams of silicon nitride balls with a diameter of 2 mm were put in, and the container of the ball mill was sealed.

[0129] [Composite Part...

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Abstract

The present invention provides a negative electrode mixture composite for a fluoride ion secondary battery, a negative electrode and a secondary battery for a fluoride ion secondary battery using the composite, and a method for manufacturing the composite. A fluoride ion secondary battery having high initial charge / discharge efficiency can be achieved. According to the present invention, aluminum having a nanoparticle size is used as a negative electrode active material, and a composite is formed together with other components of a negative electrode mixture, whereby coverage by aluminum fluoride formed by a refluorination reaction after defluorination is suppressed, and aggregation of particles of the negative electrode active material is suppressed.

Description

technical field [0001] The present invention relates to a negative electrode compound material composite body for a fluoride ion secondary battery, a negative electrode for a fluoride ion secondary battery and a secondary battery using the composite body, and a method for manufacturing the composite body. Background technique [0002] Conventionally, lithium ion secondary batteries have been widely used as secondary batteries having high energy density. A lithium ion secondary battery has a structure in which a separator is interposed between a positive electrode and a negative electrode, and a liquid electrolyte (electrolyte solution) is filled. [0003] The electrolytic solution of a lithium ion secondary battery is usually a flammable organic solvent, and therefore safety against heat may be a problem in some cases. In response to this, a solid battery using an inorganic solid electrolyte instead of an organic liquid electrolyte has been proposed (see Patent Document 1)....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/136H01M4/1397H01M10/05H01M10/0562
CPCH01M4/38H01M10/05H01M4/136H01M4/1397H01M10/0562Y02E60/10H01M2004/027H01M2004/021H01M4/1395H01M4/625H01M4/134C01F7/00H01M4/582C01P2004/62C01P2004/64C01P2006/40
Inventor 田中觉久森田善幸
Owner HONDA MOTOR CO LTD
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