摘要:
Provided are electrode compositions for lithium-ion electrochemical cells that include novel binders. The novel binders include lithium polysalts of carboxylic and sulfonic acids, lithium salts of copolymers of acids, lithium polysulfonate fluoropolymers, a cured phenolic resin, cured glucose, and combinations thereof.
摘要:
Disclosed are electrochemical cells that include electrodes comprising an electrolyte comprising a vinylene carbonate or a halogenated ethylene carbonate, composite electrodes, and a binder.
摘要:
Electrochemical cells are disclosed that include electrodes comprising a composite that includes an active material, graphite and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%. The cells also comprise an electrolyte that includes a vinylene carbonate derivative or a halogenated ethylene carbonate derivative.
摘要:
An electrode composition for a lithium-ion battery comprising particles having an average particle size ranging from 1 μm to 50 μm. The particles include an electrochemically active phase and an electrochemically inactive phase that share a common phase boundary. The electrochemically active phase includes elemental silicon and the electrochemically inactive phase includes at least two metal elements in the form of an intermetallic compound, a solid solution, or combination thereof. Each of the phases is free of crystallites that are greater than 1000 angstroms prior to cycling. In addition, the electrochemically active phase is amorphous after the electrode has been cycled through one full charge-discharge cycle in a lithium-ion battery.
摘要:
Alloy compositions, lithium ion batteries, and methods of making lithium ion batteries are described. The lithium ion batteries have anodes that contain an alloy composition that includes a) silicon, b) aluminum, c) transition metal, d) tin, e) indium, and f) a sixth element that contains yttrium, a lanthanide element, an actinide element, or a combination thereof. The alloy composition is a mixture of an amorphous phase that includes silicon and a crystalline phase that includes an intermetallic compound of 1) tin, 2) indium, and 3) the sixth element.
摘要:
Alloy compositions, lithium ion batteries, and methods of making lithium ion batteries are described. The lithium ion batteries have anodes that contain an alloy composition that includes a) silicon, b) aluminum, c) transition metal, d) tin, and e) a fifth element that contains yttrium, a lanthanide element, an actinide element, or a combination thereof. The alloy composition is a mixture of an amorphous phase that includes silicon and a nanocrystalline phase that includes an intermetallic compound of tin and the fifth element.
摘要:
Provided is an electrode for an electrochemical cell that includes a current collector, and an active material in electrical contact with the current collector, wherein the electrode has a raised pattern as well as a method of making and using the same and also for electrochemical cells incorporating the same.
摘要:
A composite includes an active material, graphite, and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%.
摘要:
An electrode composition for a lithium ion battery that includes an amorphous alloy having the formula SixMyAlz where x, y, and z represent atomic percent values and (a) x+y+z=100, (b) x≧55, (c) y 0, and (e) M is one or more metals selected from the group consisting of manganese, molybdenum, niobium, tungsten, tantalum, iron, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium, and combinations thereof.
摘要翻译:一种用于锂离子电池的电极组合物,其包括具有式SixMyAlz的非晶合金,其中x,y和z表示原子百分比值,(a)x + y + z = 100,(b)x≥55,(c) y <22,(d)z> 0,(e)M是选自锰,钼,铌,钨,钽,铁,铜,钛,钒,铬,镍,钴中的一种或多种金属 ,锆,钇及其组合。
摘要:
An electrode composition for a lithium ion battery that includes an amorphous alloy having the formula SixMyAlz where x, y, and z represent atomic percent values and (a) x+y+z=100, (b) x≧55, (c) y 0, and (e) M is one or more metals selected from the group consisting of manganese, molybdenum, niobium, tungsten, tantalum, iron, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium, and combinations thereof.
摘要翻译:一种用于锂离子电池的电极组合物,其包括具有式SixMyAlz的非晶合金,其中x,y和z表示原子百分比值,(a)x + y + z = 100,(b)x≥55,(c) y <22,(d)z> 0,(e)M是选自锰,钼,铌,钨,钽,铁,铜,钛,钒,铬,镍,钴中的一种或多种金属 ,锆,钇及其组合。