Silicon oxide and negative electrode material for lithium-ion secondary battery
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 13, 2015
Issued Date -
N/A
app pub date -
Apr 21, 2010
filing date -
Jun 19, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A silicon oxide for use as a negative electrode active material of a lithium-ion secondary battery is characterized by: a g-value measured by an ESR spectrometer is in the range of not less than 2.0020 to not more than 2.0050; and given that A, B, and C are the area intensities of peaks near 420 cm−1, 490 cm−1 and 520 cm−1 respectively in a Raman spectrum measured by a Raman spectroscopy, A/B is not less than 0.5 and C/B is not more than 2. The lithium-ion secondary battery has excellent cycle characteristic and initial efficiency in addition to high capacity. The silicon oxide preferably has a spin density in the range of not less than 1×1017 spins/g to not more than 5×1019 spins/g. A negative electrode material for the lithium-ion secondary battery contains not less than 20% by mass of this silicon oxide as a negative electrode active material.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully