Abstract: A positive electrode active material for lithium-ion rechargeable batteries of general formula Li1+xNi?Mn?A?O2 and further wherein A is Mg, Zn, Al, Co, Ga, B, Zr, or Ti and 0<x<0.2, 0.1???0.5, 0.4???0.6, 0???0.1 and a method of manufacturing the same. Such an active material is manufactured by employing either a solid state reaction method or an aqueous solution method or a sol-gel method which is followed by a rapid quenching from high temperatures into liquid nitrogen or liquid helium.

Abstract: An uncycled, preconditioned positive metal-oxide or lithium-metal-oxide electrode for a non-aqueous lithium electrochemical cell, the electrode being preconditioned in an aqueous or a non-aqueous solution containing stabilizing cations and anions that are etched into the electrode surface to form a protective layer. Methods of preconditioning the electrodes are disclosed as are electrochemical cells and batteries containing the electrodes.

Abstract: A number of materials with the composition Li1+xNi?Mn?Co?M??O2?zFz (M?=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, ? is between about 0.2 and 0.6, ? is between about 0.2 and 0.6, ? is between about 0 and 0.3, ? is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling.

Abstract: Processes are provided for making dense, spherical mixed-metal carbonate or phosphate precursors that are particularly well suited for the production of active materials for electrochemical devices such as lithium ion secondary batteries. Exemplified methods include precipitating dense, spherical particles of metal carbonates or metal phosphates from a combined aqueous solution using a precipitating agent such as ammonium hydrogen carbonate, sodium hydrogen carbonate, or a mixture that includes sodium hydrogen carbonate. Other exemplified methods include precipitating dense, spherical particles of metal phosphates using a precipitating agent such as ammonium hydrogen phosphate, ammonium dihydrogen phosphate, sodium phosphate, sodium hydrogen phosphate, sodium dihydrogen phosphate, or a mixture of any two or more thereof. Further provided are compositions of and methods of making dense, spherical metal oxides and metal phosphates using the dense, spherical metal precursors.

Abstract: An uncycled preconditioned electrode for a non-aqueous lithium electrochemical cell including a lithium metal oxide having the formula Li(2+2x)/(2+x)M?2x/(2+x)M(2?2x)/(2+x)O2??, in which 0?x<1 and ? is less than 0.2, and in which M is a non-lithium metal ion with an average trivalent oxidation state selected from two or more of the first row transition metals or lighter metal elements in the periodic table, and M? is one or more ions with an average tetravalent oxidation state selected from the first and second row transition metal elements and Sn, and an uncycled electrode of the formula xLi2M?O3.

Abstract: An activated electrode for a non-aqueous electrochemical cell is disclosed with a precursor thereof a lithium metal oxide with the formula xLi2MnO3.(1?x)LiMn2-yMyO4 for 0.5<x<1.0 such that the spinel component constitutes less than 50 mole % of the precursor electrode and 0?y<1 in which the Li2MnO3 and LiMn2-yMyO4 components have layered and spinel-type structures, respectively, and in which M is one or more metal cations. The electrode is activated by removing lithia, or lithium and lithia, from the precursor. A cell and battery are also disclosed incorporating the disclosed positive electrode.

Abstract: A number of materials with the composition Li1+xNi?Mn?Co?M??O2?zFz (M?=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, ? is between about 0.2 and 0.6, ? is between about 0.2 and 0.6, ? is between about 0 and 0.3, ? is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling. Another aspect of the invention includes materials with the composition Li1+xNi?Co?Mn?M??OyFz (M?=Mg,Zn,Al,Ga,B,Zr,Ti), where the x is between 0 and 0.2, the ? between 0 and 1, the ? between 0 and 1, the ? between 0 and 2, the ? between about 0 and about 0.2, the y is between 2 and 4, and the z is between 0 and 0.5.

Abstract: A positive electrode active material for lithium-ion rechargeable batteries of general formula Li1+xNi&agr;Mn&bgr;A&ggr;O2 and further wherein A is Mg, Zn, Al, Co, Ga, B, Zr, or Ti and 0<x<0.2, 0.1≦&agr;≦0.5, 0.4≦&bgr;≦0.6, 0≦&ggr;≦0.1 and a method of manufacturing the same. Such an active material is manufactured by employing either a solid state reaction method or an aqueous solution method or a sol-gel method which is followed by a rapid quenching from high temperatures into liquid nitrogen or liquid helium.

Abstract: A number of materials with the composition Li1+xNi&agr;Mn&bgr;Co&ggr;M′&dgr;O2−zFz (M′=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, &agr;is between about 0.2 and 0.6, &bgr; is between about 0.2 and 0.6, &ggr; is between about 0 and 0.3, &dgr; is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling.