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    • 48. 发明授权
    • Hydrochloric acid washing of carbon and graphite for making conductive ink for ultracapacitors
    • 用于制造用于超级电容器的导电油墨的碳和石墨的盐酸洗涤
    • US08871116B2
    • 2014-10-28
    • US13250087
    • 2011-09-30
    • Renee Kelly DuncanKishor Purushottam GadkareeFelipe Miguel JoosCharles Warren Lander
    • Renee Kelly DuncanKishor Purushottam GadkareeFelipe Miguel JoosCharles Warren Lander
    • H01B1/04H01B1/06C09D11/52C09D11/037
    • C09D11/52C09D11/037H01G11/34
    • Water-based conductive ink compositions may include acid-washed graphite particles, carbon black particles, at least one polymeric dispersant, at least one acrylic binder, at least one polyvinylpyrrolidone binder, at least one defoamer, and an aqueous carrier. At least 90 wt. % of the acid-washed graphite particles and the carbon black particles, based on the combined weight of the acid-washed graphite particles and the carbon black particles, may have particle sizes less than 10 μm. The water-based conductive ink composition may have a total elemental contaminant level of less than 100 ppm, based on the total weight of the water-based conductive ink composition. Methods for preparing the water-based conductive ink compositions may include preparing a letdown phase from a first premix containing carbon black and a second premix containing acid-washed graphite. The methods may include washing graphite particles in an strong acid such as hydrochloric acid, nitric acid, sulfuric acid, or mixtures thereof.
    • 水性导电油墨组合物可以包括酸洗石墨颗粒,炭黑颗粒,至少一种聚合物分散剂,至少一种丙烯酸粘合剂,至少一种聚乙烯吡咯烷酮粘合剂,至少一种消泡剂和水性载体。 至少90wt。 基于酸洗石墨颗粒和炭黑颗粒的组合重量,酸洗石墨颗粒和炭黑颗粒的%可以具有小于10μm的颗粒尺寸。 基于水基导电油墨组合物的总重量,水性导电油墨组合物可以具有小于100ppm的总元素污染物含量。 制备水性导电油墨组合物的方法可包括从含有炭黑的第一预混物和含有酸洗石墨的第二预混物制备沉淀相。 所述方法可以包括在强酸例如盐酸,硝酸,硫酸或其混合物中洗涤石墨颗粒。