Graphite particles and lithium secondary cell using them as...

C - Chemistry – Metallurgy – 01 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C01B 31/04 (2006.01) H01M 4/02 (2006.01) H01M 4/04 (2006.01) H01M 4/36 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2558706

A graphite particle obtained by assembling or binding together a plurality of flat-shaped particles so that the planes of orientation are not parallel to one another, or a graphite particle in which aspect ratio is 5 or less or specific surface area is 8 m2/g or less or the size of crystallite in the direction of c-axis of the crystal is 500 .ANG. or more and the size of crystallite in the direction of plane is 1,000 .ANG. or less as measured by X ray broad angle diffraction, or a graphite particle in which pore volume of the pores having a size falling in a range of 10 2 to 10 6 .ANG. is 0.4 to 2.0 cc/g per weight of graphite particle or pore volume of the pores having a size falling in a range of 1 × 10 2 to 2 × 10 4 .ANG. is 0.08 to 0.4 cc/g per weight of graphite particle is suitable for production of negative electrode of lithium secondary battery, and a lithium secondary battery obtained therefrom is excellent in rapid charge-discharge characteristics, cycle characteristics, etc.

Une particule de graphite obtenue par assemblage ou par liaison de diverses particules plates de telle sorte que leurs plans d'orientation ne soient pas parallèles les uns aux autres, ou une particule de graphite dont le rapport hauteur/largeur est de 5 ou moins ou dont la surface spécifique est de 8 m2/g ou moins, ou dont la taille de la cristallite dans l'axe des c est de 500 angström ou plus, et la taille de la cristallite dans la direction du plan est de 1 000 angström ou moins, selon les mesures obtenues par diffraction des rayons X, ou une particule de graphite dont les pores, de taille allant de 102 à 106 angström, ont un volume de 0,4 à 2,0 cc/g en poids de particules de graphite, ou dont les pores, de taille allant de 1 x 102 à 2 x 104 angström, ont un volume de 0,08 à 0,4 cc/g en poids de particules de graphite, convient pour la fabrication de l'électrode négative d'une pile secondaire au lithium, et la pile secondaire au lithium ainsi obtenue possède d'excellentes caractéristiques de charge-décharge en termes de rapidité, d'excellentes caractéristiques de cycle, etc.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Graphite particles and lithium secondary cell using them as... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Graphite particles and lithium secondary cell using them as..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphite particles and lithium secondary cell using them as... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1351775

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.