Negative electrode carbon material for lithium ion secondary battery and its manoufacturing method

This invention relates to a carbonaceous material for negative electrode of lithium secondary battery which is prepared by firing the rice starch part of brown rice removed the pericarp and peeling, and this carbon material manufacture method. The rice starch part is selected from the middle or supe...

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Main Author SASAKI MASAJI,AMAMA TAKESHI,KADOWAKI MUNEHIRO,OZAWA HIRONORI,OZAWA KAZUNORI,KANO HIDEKAZU,MATSUDA KANCHIKA
Format Patent
LanguageEnglish
Published 18.07.2007
Subjects
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:This invention relates to a carbonaceous material for negative electrode of lithium secondary battery which is prepared by firing the rice starch part of brown rice removed the pericarp and peeling, and this carbon material manufacture method. The rice starch part is selected from the middle or superior white husk when milling brown rice, while the negative carbon material is selected if there is wider peak when 2theta = 40 ~ 50deg. and more narrow peak when 2theta = 42 ~ 44 deg. in X-ray (CuK alpha) diffraction of the carbon material powder. This invention can manufacture carbonaceous material for negative electrode of lithium secondary battery same with the previous one more cheaply.
Bibliography:Application Number: CN2006105770