公开(公告)号：US20040248009A1

公开(公告)日：2004-12-09

申请号：US10455259

申请日：2003-06-04

Applicant: PolyPlus Battery Company

Inventor： Lutgard De Jonghe ,  Yevgeniy S. Nimon ,  Steven J. Visco

IPC: H01M004/58 ,  H01M006/00 ,  H01M006/18 ,  H01M010/00

CPC classification number: H01M4/38 ,  H01M4/0402 ,  H01M4/368 ,  H01M4/405 ,  H01M6/14 ,  H01M10/0563 ,  H01M10/4235

Abstract: Voltage delay in an active metal anode/liquid cathode battery cell can be significantly reduced or completely alleviated by coating the active metal anode (e.g., Li) surface with a thin layer of an inorganic compound with Li-ion conductivity using chemical treatment of Li surface. Particularly, preferred examples of such compounds include lithium phosphate, lithium metaphosphate, and/or their mixtures or solid solutions with lithium sulphate. These compounds can be formed on the Li surface by treatment with diluted solutions of the following individual acids: H3PO4, HPO3 and H2SO4, their acidic salts, or their binary or ternary mixtures in a dry organic solvent compatible with Li, for instance in 1,2-DME; by various deposition techniques. Such chemical protection of the Li or other active metal electrode significantly reduces the voltage delay due to protected anode's improved stability toward the electrolyte.

Abstract translation: 通过使用Li表面的化学处理，用具有Li离子传导性的无机化合物的薄层涂覆活性金属阳极（例如Li）表面，可以显着降低或完全减轻活性金属阳极/液体阴极电池单元中的电压延迟 。 特别地，这些化合物的优选实例包括磷酸锂，偏磷酸锂和/或其与硫酸锂的混合物或固溶体。 这些化合物可以在Li表面上通过用与Li相容的干燥有机溶剂中的以下各种酸：H 3 PO 4，HPO 3和H 2 SO 4，它们的酸性盐或其二元或三元混合物的稀释溶液，例如1， 2-DME; 通过各种沉积技术。 Li或其他活性金属电极的这种化学保护显着地降低了由于被保护的阳极提高了对电解质的稳定性的电压延迟。