TIN PARTICLE CARRYING SHEET AND NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY

To provide a negative electrode for a lithium ion secondary battery, capable of enhancing capacity and cycle characteristics of a lithium ion secondary battery.SOLUTION: A tin particle carrying sheet includes a sheet containing carbon nanotubes and having a porosity of 5% or more and 90% or less, an...

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Main Authors YAMAGISHI TOMOKO, UEJIMA MITSUGI, SHIMIZU TOSHIYA, ARAI SUSUMU, SHIMIZU MASAHIRO
Format Patent
LanguageEnglish
Japanese
Published 25.04.2019
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:To provide a negative electrode for a lithium ion secondary battery, capable of enhancing capacity and cycle characteristics of a lithium ion secondary battery.SOLUTION: A tin particle carrying sheet includes a sheet containing carbon nanotubes and having a porosity of 5% or more and 90% or less, and tin particles supported on the sheet. An average grain size of the tin particles supported on the tin particle carrying sheet is preferably 5 μm or less. The tin particle carrying sheet is preferably formed of only carbon nanotubes.SELECTED DRAWING: None 【課題】リチウムイオン二次電池の容量およびサイクル特性を高めることができるリチウムイオン二次電池用負極を提供する。【解決手段】カーボンナノチューブを含有し、且つ、空隙率が５％以上９０％以下であるシートと、前記シートに担持されたスズ粒子とを有する、スズ粒子担持シート。当該スズ粒子担持シートに担持されたスズ粒子の平均粒径が５μｍ以下であることが好ましい。また、当該スズ粒子担持シートはカーボンナノチューブのみで構成されていることが好ましい。【選択図】なし
Bibliography:Application Number: JP20170189161