COMPOSITE CURRENT COLLECTORS FOR SECONDARY ZINC ACCUMULATORS AND METHODS OF THEIR MANUFACTURING, PLATES OF NEGATIVE ELECTRODES AND SECONDARY ZINC ACCUMULATORS Russian patent published in 2025 - IPC H01M4/66 

FIELD: electric elements.

SUBSTANCE: invention relates to secondary accumulators and, in particular, to a composite current collector for a secondary zinc accumulator, to a method of its manufacturing, a negative electrode plate and a secondary zinc accumulator. Composite current collector for the secondary zinc accumulator contains a substrate, a current-conducting layer placed on the said substrate, two metal layers and a layer of carbon fabric placed between two metal layers. Each of the two metal layers is a zinc mesh. Zinc mesh cells or pores of carbon fabric layer of carbon fabric are filled with tin. Current-conducting layer includes a current-conducting polymer and a current-conducting carbon material. In accordance with the composite current collector for the secondary zinc accumulator, two metal layers are formed by combining the zinc grid and tin, and carbon fabric is placed between the two metal layers, so that the zinc negative electrode corrosion is significantly reduced during the use of the battery while providing the electrical conductivity of the current collector at the same time, and as a result, the cyclic characteristics of the accumulator are significantly improved.

EFFECT: group of inventions provides a composite current collector for a secondary zinc accumulator and a method for manufacturing thereof, plates of a negative electrode and a zinc secondary accumulator, which improve the cyclic life of the secondary zinc accumulator.

10 cl, 2 dwg, 2 tbl, 5 ex