About 64 results
https://drivepatents.com/patents/992714 · 27 Feb 2013
Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1, a sulfur compound with a sulfide bond is contained, as an impurity, in the lithium iron ph...
https://drivepatents.com/patents/993126 · 6 Feb 2013
A composite powder in which highly dispersed metal oxide nanoparticle precursors are supported on carbon is rapidlyl heated under nitrogen atmosphere, crystallization of metal oxide is allowed to progress, and highly dispersed metal oxide nanoparticles are...
https://drivepatents.com/patents/993500 · 23 Jan 2013
Active material comprises metal compounds (I). Active material comprises metal compounds of formula (M1 xCu n - x / 2P 2O 5 + n) (I). M1 : monovalent metal e.g. silver; and x, n : greater than 1 to 6, where n is greater than x. Independent claims are inclu...
https://drivepatents.com/patents/994624 · 26 Dec 2012
A composite cathode active material, a cathode and a lithium battery including the composite cathode, and a method of preparing the composite cathode active material, the composite cathode active material including a compound with an olivine crystal struct...
https://drivepatents.com/patents/997270 · 17 Oct 2012
The invention relates to a graphene-modified lithium iron phosphate positive electrode active material and a method for preparing the same, as well as a lithium-ion secondary cell based on this positive electrode active material. The positive electrode act...
https://drivepatents.com/patents/997129 · 17 Oct 2012
To provide a method for producing lithium iron phosphate possessing a high discharge capacity as an inexpensive positive active material by using inexpensive iron particles as an iron source. The lithium iron phosphate is manufactured by a synthesizing ste...
https://drivepatents.com/patents/997688 · 3 Oct 2012
It is to provide a process for producing a phosphate compound capable of producing olivine-type crystalline particles of a phosphate compound excellent in the properties and the reliability, easily at a low cost. Particularly, it is to provide a process fo...
https://drivepatents.com/patents/998572 · 5 Sep 2012
A positive active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including the same. The positive active material has a carbon sheet having a structure including 1 to 200 polycyclic nanosheets, eac...
https://drivepatents.com/patents/1002891 · 2 May 2012
To provide a process for producing a positive electrode material for a secondary cell, whereby it is possible to easily produce a positive electrode material comprising an olivine-type phosphate composite compound and having electrical conductivity and its...
https://drivepatents.com/patents/1002858 · 2 May 2012
Provided is a positive active material for a lithium secondary battery, which contains LiMPO(M is transition metal) and is capable of achieving high discharge capacity even when the atomic ratio of Mn in M of LiMPOis 85% or more (Mn is inexpensive and is c...