Fluoride ion secondary battery

A technology for fluoride ions and secondary batteries, which is applied in secondary batteries, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve problems such as the inability to provide defluorination/refluorination reactions, and achieve high charge and discharge efficiency Effect

Pending Publication Date: 2022-05-27
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 limit of -2.41V, which is the reduction potential window of LBF, it is in a situation where the defluorination / refluorination reaction of the above-mentioned negative electrode active material cannot be provided in consideration of the overvoltage.

Method used

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Examples

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Embodiment 1

[0156] [Production of negative electrode composite material composite for fluoride ion secondary battery]

[0157] Using aluminum as the negative electrode active material and using lithium (Li) metal to aluminum fluoride (AlF 3 ) modified aluminum fluoride, CeBaF as fluoride ion-conducting fluoride 2.95 , acetylene black as a conductive auxiliary agent, produced a composite of negative electrode composite materials for fluoride ion secondary batteries.

[0158] In the production of the negative electrode composite material composite for fluoride ion secondary batteries, the first composite obtained by the first mixing step and the first composite step, and the first composite obtained by the second mixing step and the second composite step The second composite was mixed in the third mixing step, and the third composite step was carried out to finally obtain the negative electrode composite material composite for fluoride ion secondary battery used in this example. In additi...

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Abstract

Provided is a fluoride ion secondary battery which has high initial charge / discharge efficiency, and which starts charging and has a high voltage. Nanoparticle-sized aluminum and modified aluminum fluoride having pores generated by desorption of fluoride ions are used as negative electrode active materials, a composite is formed together with other components of a negative electrode composite material, and a negative electrode using the composite is combined with a positive electrode containing a specific substance as a positive electrode active material. Thus, the fluoride ion secondary battery is formed.

Description

technical field [0001] The present invention relates to a fluoride ion secondary battery. 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 exists between a positive electrode and a negative electrode, and is filled with a liquid electrolyte (electrolytic solution). [0003] Since the electrolyte solution of a lithium ion secondary battery is a flammable organic solvent normally, safety especially with respect to heat may become a problem. Therefore, a solid-state battery using an inorganic-based solid electrolyte instead of an organic-based liquid electrolyte has been proposed (see Patent Document 1). [0004] As a battery using such a solid electrolyte, a secondary battery using fluoride ions is also being studied (see Patent Document 2). It is known that fluoride ion secondary batteries are based on fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/05H01M4/36H01M4/38H01M4/58H01M4/62H01M10/0562
CPCY02E60/10H01M4/582H01M4/136H01M10/052H01M4/362H01M4/463H01M4/58H01M10/0562H01M2004/027H01M2004/028
Inventor 田中觉久森田善幸
Owner HONDA MOTOR CO LTD
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