About 54 results
https://drivepatents.com/patents/1016304 · 26 Jan 2011
The present invention provides a process for producing a lithium secondary battery which employs charging method where a positive electrode upon charging has a maximum achieved potential of 4.3V (vs. Li/Li + ) or lower, comprising: charging the lithium sec...
https://drivepatents.com/patents/1070223 · 8 Feb 2006
A layered lithium-nickel-based compound oxide powder for a positive electrode material for a high density lithium secondary cell, capable of providing a lithium secondary cell having a high capacity and excellent in the rate characteristics also, is provid...
https://drivepatents.com/patents/1077709 · 18 May 2005
Electrochemically active material (I) comprises more than 97 wt.% of a rhombohedral crystal phase comprising a mixed oxyfluoride (II) of lithium, nickel and manganese. Electrochemically active material comprises more than 97 wt.% of a rhombohedral crystal ...
https://drivepatents.com/patents/1081261 · 29 Dec 2004
An anode material for lithium secondary cells comprises secondary particles of a lithium transition metal composite oxide including boron and/or bismuth. The atomic ratio of boron and bismuth to the total of metal atoms other than boron and bismuth is 5-70...
https://drivepatents.com/patents/1089572 · 25 Feb 2004
Positive active materials are provided with which a non-aqueous electrolyte secondary battery having a high energy density and excellent charge/discharge cycle performance can be produced. Also provided are a positive electrode for non-aqueous electrolyte ...
https://drivepatents.com/patents/1091150 · 17 Dec 2003
A positive active material capable of giving a non-aqueous electrolyte secondary battery excellent in high-rate charge/discharge performance and charge/discharge cycle performance and having a high energy density is provided. Also provided is a non-aqueous...
https://drivepatents.com/patents/1091464 · 3 Dec 2003
A lithium ion secondary battery having high energy density and of excellent safety, and a cathode active material used therefor are provided. The cathode active material is a Li-containing composite oxide comprising a plurality of transition metal elements...
https://drivepatents.com/patents/1097347 · 26 Mar 2003
Because of the composition represented by General Formula: Li1+x+ alpha Ni(1-x-y+ delta )/2Mn(1-x-y- delta )/2MyO2 (where 0 ≤ x ≤ 0.05, -0.05 ≤ x+ alpha ≤ 0.05, 0 ≤ y ≤ 0.4; -0.1 ≤ delta ≤ 0.1 (when 0 ≤ y ≤ 0.2) or -0.24 ≤ delta ≤ 0...
https://drivepatents.com/patents/1105000 · 2 May 2002
A positive electrode active material for nonaqueous electrolytic solution secondary batteries is substantially made of a Li containing transition metal composite oxide, which has a composition expressed by LiMSnO (wherein M is a transition metal, such as C...
https://drivepatents.com/patents/1105353 · 10 Apr 2002
Disclosed is a positive active material for a rechargeable lithium battery. The positive active material includes a core and a surface-treatment layer on the core. The core includes at least one lithiated compound and the surface-treatment layer includes a...