BIPOLAR ELECTRODE, BIPOLAR STORAGE BATTERY USING IT, AND MANUFACTURING METHOD OF BIPOLAR ELECTRODE Russian patent published in 2014 - IPC H01M10/58 H01M4/13 H01M4/62 H01M10/52 

FIELD: electricity.

SUBSTANCE: bipolar electrode consists of the first layer of active material, which represents for example the active material layer of a positive electrode, which is formed of the first active material on one side of a current collector, and the second layer of active material, which represents the active material layer of a negative electrode, which is formed of the second active material with lower compressive strength than that of the first active material on the other side of the current collector. Besides, a density controlling additive is added to the second layer of active material, which represents additional material with bigger compressive strength than that of the second active material.

EFFECT: reduction of mechanical stresses in both layers of active material arranged on front and rear surfaces of the current collector when both layers of active material are compressed simultaneously prevents the possibility of distortion of a bipolar storage battery.

10 cl, 13 dwg, 1 tbl, 5 ex