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Electrode for secondary battery and method for manufacturing same

A secondary battery and electrode technology, applied in the field of secondary battery electrodes and their manufacturing, to achieve the effect of excellent charge and discharge capacity

Pending Publication Date: 2022-03-01
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing lithium-ion secondary batteries, flammable organic electrolytes are mainly used as electrolytes, so there are concerns about dangers such as fire.

Method used

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  • Electrode for secondary battery and method for manufacturing same
  • Electrode for secondary battery and method for manufacturing same
  • Electrode for secondary battery and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to these Examples.

[0054] Tables 1 to 4 show examples (No. 3 to 6, 9 to 23) and comparative examples (No. 1, 2, 7, 8).

[0055] [Table 1]

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[0057] [Table 2]

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[0059] [table 3]

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[0061] [Table 4]

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[0063] (Sample No.1~8)

[0064] In terms of mass %, weigh hard carbon powder (Belfine (R) LN-0001, D 50 = 1 μm) 80%, acetylene carbon black (TIMCAL company SUPER C65) 5% as a conductive additive, polyacrylic acid (Wako Pure Chemical Industries, Ltd. PAH, crosslinking degree 0%) 15% as an organic binder, Get the ingredients. Slurry was performed by adding N-methylpyrrolidone in an equal amount to the raw material and stirring well using a rotary revolution mixer. Wherein, the above operations are all carried out in an environment with a dew point below -50°C. However, for No. 8, the organic binder was not add...

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Abstract

Provided is an electrode for a secondary battery with which excellent charge / discharge capacity can be obtained. An electrode for a secondary battery, which contains an electrode active material powder and an organic binder, and which is characterized by emitting fluorescence in Raman spectroscopy at a wavelength of 532 nm.

Description

technical field [0001] The present invention relates to an electrode that is a component of a secondary battery used in portable electronic devices, electric vehicles, and the like, and a method for manufacturing the same. Background technique [0002] Lithium-ion secondary batteries have established themselves as high-capacity, lightweight power sources that are indispensable for mobile devices and electric vehicles. In conventional lithium ion secondary batteries, a flammable organic electrolytic solution is mainly used as an electrolyte, so there is concern about dangers such as fire. As a solution to this problem, development of a lithium-ion all-solid-state battery using a solid electrolyte instead of an organic electrolyte solution is underway (for example, refer to Patent Document 1). [0003] In addition, as lithium is concerned that there is a concern that raw materials in the world will increase, sodium is also attracting attention as a material to replace lithium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/054H01M4/62H01M10/0562
CPCH01M4/623H01M10/054H01M10/0562H01M4/0471H01M10/0525Y02E60/10
Inventor 角田启山内英郎
Owner NIPPON ELECTRIC GLASS CO LTD