| 摘要 |
<p>To provide an anode material for a nonaqueous electrolyte secondary battery of low irreversible capacity showing excellent characteristics endowed with both high-speed charge discharge characteristics and high cycle characteristics. ! In the method of manufacturing an anode material (D) by baking a spheroidized graphite particle mixture (C) mixing spheroidized graphite particles (A) with a mean particle size of 3 to 50 mum, a spacing (d002) of a 002 face of 3.37 Å or less by X-ray wide-angle diffractometry, an Lc of 900 Å or more, a tap density of 0.8 g/cm3 or more, and a Raman R value as a peak intensity ratio of a peak intensity around 1,360 cm-1 to a peak intensity around 1,580 cm-1 in the argon ion laser Raman spectrum of 0.15 to 0.5, and an organic compound (B), the mixture (C) with a bulk density of 0.3 g/cm3 to 2 g/cm3 is compressed by 1.05 to 3 times the bulk density, after which, it is baked at 400�C or higher. ! (C)2012,JPO&INPIT</p> |
