Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1344/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :03/04/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR USE
IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR USE IN
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY
BATTERY
(51) International classification
:H01M (71)Name of Applicant :
4/00 1)SHIN-ETSU CHEMICAL CO., LTD.
(31) Priority Document No
:2011- Address of Applicant :6-1, OHTEMACHI 2-CHOME,
086694 CHIYODA-KU, TOKYO Japan
(32) Priority Date :08/04/2011 (72)Name of Inventor :
(33) Name of priority country :Japan 1)NAKANISHI, TETSUO
(86) International Application No
:NA 2)IKEDA, TATSUHIKO
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
The present invention provides a method for manufacturing a carbon-coated negative electrode active material for use in a nonaqueous
electrolyte secondary battery, wherein a negative electrode active raw material including at least one of silicon oxide
powder and silicon powder is coated with carbon by a catalytic CVD method. The present invention also provides a negative
electrode material for use in a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery using
the negative electrode active material. As a result, there is provided a method for manufacturing a negative electrode active
material for use in a non-aqueous electrolyte secondary battery in which high battery capacity given by the silicon-based active
material is maintained and a volume expansion and a break in the active material are suppressed.
No. of Pages : 48 No. of Claims : 9
The Patent Office Journal 21/06/2013 13803