SILICON-GRAPHITE COMPOSITE PARTICLES AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2013/141104

A9

The present invention addresses the problem of providing silicon-graphite composite particles capable of further improving the charge/discharge-cycle characteristics of a nonaqueous electrolyte secondary cell such as a lithium-ion secondary cell, and a method for manufacturing the particles. These silicon-graphite composite particles (100) are provided with a plurality of scaly graphite particles (120) and silicon particles (110). The plurality of scaly graphite particles are aligned in layers. The silicon particles are held between the plurality of scaly graphite particles. When an electrode having an electrode density of 1.70±0.02 g/cm3 is prepared from the silicon-graphite composite particles, the ratio of the intensity I (004) of the peak belonging to surface (004) in relation to the intensity I (110) of the peak belonging to surface (110) for the electrode in an X-ray diffraction image should preferably be within a range of 0.0010 to 0.0300.

WO/2012/111161	LITHIUM-ION SECONDARY CELL AND METHOD FOR MANUFACTURING SAME
JPS6414882	SECONDARY BATTERY
JP3618714	ORGANIC ELECTROLYTE BATTERY

YAMAMOTO HIROSHI (JP)
NEGI NORIYUKI (JP)
NAGATA TATSUO (JP)
YAUCHI AKIHIRO (JP)
FUJIWARA TOORU (JP)

PCT/JP2013/056955

July 24, 2014

March 13, 2013

Click for automatic bibliography generation  

CHUO DENKI KOGYO CO LTD (JP)
NIPPON STEEL & SUMITOMO METAL CORP (JP)

H01M4/587; C01B31/04; H01M4/36; H01M4/38

KITAHARA Hiroyoshi et al. (JP)
Hironobu Kitahara (JP)

View/Download PDF      PDF Help

Previous Patent: STOOL ASSAY KIT

Next Patent: METHOD FOR PRODUCING (METH)ACRYLIC ACID ESTER-BASED COPOLYMER