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Negative electrode for fluoride ion secondary battery, and fluoride ion secondary battery provided with same

A technology of fluoride ion and secondary battery, which is applied in the direction of secondary battery, battery electrode, active material electrode, etc., can solve the problems such as difficult electrochemical reactions, and achieve the effect of large battery capacity

Pending Publication Date: 2022-07-26
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, although the use of aluminum fluoride has been studied, there is a problem that the electrochemical reaction is difficult to occur due to the electrical insulating properties of aluminum fluoride.

Method used

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  • Negative electrode for fluoride ion secondary battery, and fluoride ion secondary battery provided with same
  • Negative electrode for fluoride ion secondary battery, and fluoride ion secondary battery provided with same
  • Negative electrode for fluoride ion secondary battery, and fluoride ion secondary battery provided with same

Examples

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Embodiment 1～3

[0079] according to figure 2 The manufacturing method of the negative electrode for fluoride ion secondary batteries of this embodiment, the negative electrode mixture powder for fluoride ion secondary batteries of Examples 1-3 was produced. In Example 1, zirconium fluoride having an average particle diameter of 65 nm was used, in Example 2, zirconium fluoride having an average particle diameter of 20 nm was used, and in Example 3, zirconium fluoride having an average particle diameter of 2 μm was used. In addition, in each of Examples 1 to 3, the content of zirconium fluoride in the negative electrode for a fluoride ion secondary battery was set to 25% by mass.

Embodiment 4～7

[0081] according to figure 2 In the manufacturing method of the negative electrode for fluoride ion secondary batteries of this embodiment shown, the negative electrode mixture powder for fluoride ion secondary batteries of Examples 4-7 was produced. In Examples 4 to 7, zirconium fluoride having an average particle diameter of 65 nm was used. In addition, the content of zirconium fluoride in the negative electrode for a fluoride ion secondary battery was 12.5 mass % in Example 4, 30 mass % in Example 5, and 40 mass % in Example 6, In Example 7, it was set to 50 mass %.

Embodiment 8～10

[0083] according to image 3 The negative electrode for fluoride ion secondary batteries of Examples 8-10 was produced by the manufacturing method of the negative electrode for fluoride ion secondary batteries of this embodiment shown. In Examples 8 to 10, metal zirconium having an average particle size of 2 μm was used. In addition, the content of metal zirconium in the negative electrode for a fluoride ion secondary battery was 8 mass % in Example 8, 1 mass % in Example 9, and 5 mass % in Example 10.

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Abstract

The problem addressed by the present invention is to provide a fluoride ion secondary battery having a larger battery capacity than in the prior art. In order to solve the problem, provided are: a negative electrode for a fluoride ion secondary battery, which contains zirconium fluoride as a negative electrode active material; and a fluoride ion secondary battery provided with the negative electrode. The average particle diameter of the zirconium fluoride may be 100 nm or less, and the content of the zirconium fluoride in the negative electrode for a fluoride ion secondary battery may be less than 50 mass%. The negative electrode active material may further contain zirconium metal, the average particle diameter of the zirconium metal may be 75 [mu] m or less, and the content of the zirconium metal in the negative electrode for a fluoride ion secondary battery may be 8 mass% or less.

Description

technical field [0001] The present invention relates to a negative electrode for a fluoride ion secondary battery and a fluoride ion secondary battery provided with the negative electrode. Background technique [0002] Conventionally, fluoride ion secondary batteries using fluoride ions as carriers have been proposed (for example, see Patent Documents 1 to 6). In recent years, fluoride ion secondary batteries are expected to have higher battery characteristics than lithium ion secondary batteries, and various studies have been conducted. [0003] For example, aluminum-based materials are exemplified as candidates for negative electrode active materials of fluoride ion secondary batteries. Among them, although the use of aluminum fluoride has been studied, since aluminum fluoride has electrical insulating properties, there is a problem that it is difficult to cause an electrochemical reaction. [0004] [Prior Art Literature] [0005] (patent literature) [0006] Patent Do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/58H01M10/05
CPCH01M4/362H01M4/382H01M4/582H01M10/05H01M2004/027Y02E60/10H01M4/364H01M4/244H01M4/38H01M10/365H01M2004/021H01M10/054
Inventor 田中觉久森田善幸
Owner HONDA MOTOR CO LTD