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    • 1. 发明申请
    • METHOD FOR PRODUCING LITHIUM VANADIUM POLYANION POWDERS FOR BATTERIES
    • 用于生产电池用锂离子电池的方法
    • WO2008154282A1
    • 2008-12-18
    • PCT/US2008/065896
    • 2008-06-05
    • CONOCOPHILLIPS COMPANYKIMBLE, James, B.MAO, ZhenhuaNANNI, Edward, J.LATIMER, Edward, G.
    • KIMBLE, James, B.MAO, ZhenhuaNANNI, Edward, J.LATIMER, Edward, G.
    • H01M4/58H01M4/50C01G31/00C01G45/00
    • H01M4/5825C01B25/45
    • A process for producing a cathode powder for making lithium ion batteries wherein the powder comprises lithium, vanadium and a polyanion. The process includes forming a solution-suspension of the precursors, including vanadium pentoxide, with a reducing agent, a solvent, and a carbon-residue-forming material. The reducing agent reduces the vanadium in vanadium pentoxide from V 5+ to V 3+ . The solution-suspension is heated in inert environment to drive synthesis of the LVP so the carbon-residue-forming material is oxidized and precipitates, forming CCLVP. Liquids are separated from solids and the dry powder is heated to drive crystallization of the product. The product retains small particle size, includes carbon in the LVP for conductivity, and is created with low cost precursors and with no need to reduce the product size for use in batteries. Addition of carbon black, graphite or other form of carbon is unnecessary to provide the conductivity required for use in batteries.
    • 一种制造用于制备锂离子电池的阴极粉末的方法,其中所述粉末包含锂,钒和聚阴离子。 该方法包括形成包含五氧化二钒的前体的溶液 - 悬浮液与还原剂,溶剂和形成碳残留物的材料。 还原剂将五氧化二钒中的钒从V5 +降低至V3 +。 将溶液悬浮液在惰性环境中加热以驱动LVP的合成,使得碳残留物形成材料被氧化并沉淀,形成CCLVP。 液体与固体分离,加热干燥粉末以驱使产物结晶。 该产品保持小颗粒尺寸,包括LVP中的碳导电性,并且以低成本的前体产生,并且不需要减少用于电池的产品尺寸。 不需要添加炭黑,石墨或其他形式的碳以提供用于电池所需的导电性。