Negative electrode for lithium ion battery, lithium ion battery, method for manufacturing negative electrode for lithium ion battery, and method for manufacturing lithium ion battery

Negative electrode for lithium ion battery, lithium ion battery, method for manufacturing negative electrode for lithium ion battery, and method for manufacturing lithium ion battery

Provided is a negative electrode for a lithium ion battery capable of improving battery characteristics such as high capacity and cycle characteristics of the battery. The negative electrode mixture has a negative electrode active material, a binder, and a hydrophobized cellulose, and a negative ele...

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Hauptverfasser: ISHIGURO RYOU, MORISHITA MASANORI, NAKAMURA SATORU, KUKEN, YUSUKE
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator ISHIGURO RYOU
MORISHITA MASANORI
NAKAMURA SATORU
KUKEN, YUSUKE
description Provided is a negative electrode for a lithium ion battery capable of improving battery characteristics such as high capacity and cycle characteristics of the battery. The negative electrode mixture has a negative electrode active material, a binder, and a hydrophobized cellulose, and a negative electrode mixture layer (1M) having the negative electrode mixture is configured in the following manner. The negative electrode active material contains nano Si, the binder is an organic solvent-based binder (for example, polyimide or polyvinylidene fluoride), and the hydrophobized cellulose is a substance in which some of the hydrophilic groups of the cellulose are substituted by hydrophobic groups. As such, by using the organic solvent-based binder, the reaction between water and Si can be prevented, and the electrode characteristics can be improved. Furthermore, in general, the addition amount of an organic solvent-based binder has to be increased due to the use of nano-Si, and the battery capacity and cycle chara
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Negative electrode for lithium ion battery, lithium ion battery, method for manufacturing negative electrode for lithium ion battery, and method for manufacturing lithium ion battery
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