About 65 results
https://drivepatents.com/patents/1010202 · 17 Aug 2011
The invention relates to materials for use as electrodes as an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides a transition-metal compounds having the rhombohedral NASCION structure and the polyanion ...
https://drivepatents.com/patents/1011483 · 29 Jun 2011
Provided is a cathode active material having a composition represented by the following Formula I: LiFe(P)O) (I) wherein a molar fraction (1-x) of phosphorus (P) is in the range of 0.910 to 0.999, to allow operational efficiency of the cathode active mater...
https://drivepatents.com/patents/1014494 · 30 Mar 2011
The present invention provides a transition metal phosphate and a production process thereof, a positive electrode, and a sodium secondary battery. The transition metal phosphate contains sodium (Na), phosphorus (P) and a transition metal element and havin...
https://drivepatents.com/patents/1014729 · 23 Mar 2011
The present invention provides a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte secondary battery comprises a Positive electrode containing a Positive electrode active material capable of being doped and dedoped with alkali metal ions...
https://drivepatents.com/patents/1015559 · 23 Feb 2011
The invention provides a polyanion-based positive active material which can improve storage stability (especially, high temperature storage stability), charge and discharge cycle performance and the like of a lithium secondary battery, and a lithium second...
https://drivepatents.com/patents/1015986 · 9 Feb 2011
The invention relates to materials for use as electrodes as an alkali-ion secondary (rechargeable) battery, particularly a lithium-ion battery. The invention provides a transition-metal compounds having the rhombohedral NASCION structure and the polyanion ...
https://drivepatents.com/patents/1016293 · 26 Jan 2011
The present invention relates to a process for producing lithium iron phosphate particles having an olivine type structure, comprising a first step of mixing an iron oxide or an iron oxide hydroxide as an iron raw material which comprises at least one elem...
https://drivepatents.com/patents/1081515 · 22 Dec 2004
A method for manufacturing a cathode active material comprising: a mixing step of mixing at least Fe3(PO4)2nH2O (n designates the number of hydrates and ranges from 0 to 8.) with Li3PO4; and a sintering step of sintering a mixed material obtained in the mi...
https://drivepatents.com/patents/1088625 · 31 Mar 2004
The invention provides an electrochemical cell which comprises a first electrode and a second electrode which is a counter electrode to said first electrode. The first electrode comprises a phosphorous compound of the nominal general formula LiE'E"(PO), de...
https://drivepatents.com/patents/1093840 · 27 Aug 2003
The invention provides a positive electrode material and a battery using the same which can achieve a higher discharge voltage and which can obtain excellent charge-and-discharge properties, without reducing the capacity. A positive electrode (12) and a ne...