Abstract:
A solid secondary lithium electrochemical cell comprises a physical mixture of Li.sub.x Mn.sub.2 O.sub.4 (spinel) and at least one lithiated metal oxide selected from the group consisting of Li.sub.x NiO.sub.2 and Li.sub.x CoO.sub.2 wherein 0
Abstract translation:固体二次锂电化学电池包括LixMn 2 O 4(尖晶石)和至少一种选自LixNiO 2和LixCoO 2的锂化金属氧化物的物理混合物,其中0
Abstract:
A concealed door hingedly-affixed to a concealed door frame adapted to resemble shelving and cabinets, the concealed door assembly simulated permanently-affixed shelving and cabinets, and comprising a playless hinge and various overlapping, double-stacked and interconnected components.
Abstract:
Active materials of the invention contain at least one alkali metal and at least one other metal capable of being oxidized to a higher oxidation state. Preferred other metals are accordingly selected from the group consisting of transition metals (defined as Groups 4-11 of the periodic table), as well as certain other non-transition metals such as tin, bismuth, and lead. The active materials may be synthesized in single step reactions or in multi-step reactions. In at least one of the steps of the synthesis reaction, reducing carbon is used as a starting material. In one aspect, the reducing carbon is provided by elemental carbon, preferably in particulate form such as graphites, amorphous carbon, carbon blacks and the like. In another aspect, reducing carbon may also be provided by an organic precursor material, or by a mixture of elemental carbon and organic precursor material.
Abstract:
The present invention provides composition comprising at least one lithium-containing transition metal sulfide and carbon, wherein particles of the carbon are dispersed at the microscopic level on individual particles of the lithium-containing transition metal sulfide.
Abstract:
Sodium ion batteries are based on sodium based active materials selected among compounds of the general formula AaMb(XY4)c wherein A comprises sodium, M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, and XY4 represents phosphate or a similar group. The anode of the battery includes a carbon material that is capable of inserting sodium ions. The carbon anode cycles reversibly at a specific capacity greater than 100 mAh/g.
Abstract:
The invention provides an electrochemical cell which includes a first electrode and a second electrode which is a counter electrode to said first electrode, and an electrolyte material interposed there between. The first electrode includes an alkali metal phosphorous compound doped with an element having a valence state greater than that of the alkali metal.
Abstract:
The invention provides an electrochemical cell which includes a first electrode having a electrode active material, a second electrode which is a counter electrode to the first electrode, and an electrolyte. The negative electrode active material is represented by the general formula EfTigDhOi.
Abstract:
A method for carrying out solid state reactions under reducing conditions is provided. Solid state reactants include at least one inorganic metal compound and a source of reducing carbon. The reaction may be carried out in a reducing atmosphere in the presence of reducing carbon. Reducing carbon may be supplied by elemental carbon, by an organic material, or by mixtures. The organic material is one that can form decomposition products containing carbon in a form capable of acting as a reductant. The reaction proceeds without significant covalent incorporation of organic material into the reaction product. In a preferred embodiment, the solid state reactants also include an alkali metal compound. The products of the method find use in lithium ion batteries as cathode active materials. Preferred active materials include lithium-transition metal phosphates and lithium-transition metal oxides. In a preferred embodiment, the reaction product contains carbon particles intimately mixed among crystals of the active materials.
Abstract:
The invention provides new and novel lithium-metal-fluorophosphates which, upon electrochemical interaction, release lithium ions, and are capable of reversibly cycling lithium ions. The invention provides a rechargeable lithium battery which comprises an electrode formed from the novel lithium-metal-fluorophosphates. The lithium-metal-fluorophosphates comprise lithium and at least one other metal besides lithium.