About 65 results
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...
https://drivepatents.com/patents/1003858 · 4 Apr 2012
Electrode active material comprising a compound of the formula A a + x ¢ M¹ 1 + x / 2 ¢ M ¢ º 1 - a / 2 ¢ P 1 - x ¢ S ¢ i x ¢ O 4 , wherein (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, where 0 < a < 1.0 and x = 0...
https://drivepatents.com/patents/1005738 · 1 Feb 2012
A method of manufacturing a positive electrode active material for lithium ion batteries, comprising: preparing a mixture containing (A) Li 3 PO 4 , or a Li source and a phosphoric acid source, (B) at least one selected from a group of a Fe source, a Mn so...
https://drivepatents.com/patents/1006120 · 18 Jan 2012
A method for producing lithium iron phosphate includes: an aqueous solution preparing step of preparing an aqueous solution containing a phosphoric acid and a carboxylic acid; a first forming step of adding iron particles containing 0.5 mass% or more of ox...
https://drivepatents.com/patents/1007632 · 30 Nov 2011
The invention provides an anion-deficient lithium transition-metal phosphate as an electrode-active material, which is represented by the chemical formula LiM(PO)(0≤x≤0.15, 0
https://drivepatents.com/patents/1007881 · 16 Nov 2011
The particles of olivine-structure compound are deposited on surface(s) of carbon film by pyrolysis. Thus, carbonated complex oxide is prepared. The carbonated complex oxide is obtained by depositing particles of olivine-structure compound on surface(s) of...
https://drivepatents.com/patents/1008140 · 2 Nov 2011
It is an object of the present invention to provide a positive electrode material having a large ratio of the discharge capacity around 4 V to the total discharge capacity including the discharge capacity at 4V or lower while making the discharge capacity ...
https://drivepatents.com/patents/1009337 · 28 Sep 2011
A method for producing a composite lithium iron phosphate material, which comprises formulating lithium iron phosphate material and purified water at a weight ratio of 1:5-15 into a suspension solution, slowly adjusting the pH value of the suspension solut...
https://drivepatents.com/patents/1010014 · 24 Aug 2011
There is disclosed a multi-component system lithium phosphate compound particles having an olivine structure and represented by a general formula of LiM1M2PO in which M1 is one metal element selected from the group consisting of Fe, Mn and Co, Y is a numbe...
https://drivepatents.com/patents/1010011 · 24 Aug 2011
Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li 3 PO 4 , and comprising no Li 2 CO 3 or, if present, comprising Li 2 CO 3 in an amount less than 0.25% by weight: Li 1+a ...