NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY

NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY

A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes first fiber parts, covering parts, and second fiber parts, and has voids. The first fiber parts are coupled to each other to thereby form a three-dimensional mesh st...

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1. Verfasser: KOIKE, Yosuke
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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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description A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes first fiber parts, covering parts, and second fiber parts, and has voids. The first fiber parts are coupled to each other to thereby form a three-dimensional mesh structure having the voids. The first fiber parts each include carbon as a constituent element. The covering parts each cover a surface of corresponding one of the first fiber parts, and each include silicon as a constituent element. At least some of the second fiber parts are each coupled to a surface of any of the covering parts. The second fiber parts each include carbon as a constituent element. The first fiber parts have an average fiber diameter that is greater than or equal to 10 nm and less than or equal to 8000 nm. The second fiber parts have an average fiber diameter that is greater than or equal to 1 nm and less than or equal to 300 nm. The negative electrode has a void rate that is greater than or equal to 40 vol % and less than or equal to 70 vol %.
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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 SECONDARY BATTERY, AND SECONDARY BATTERY
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