LITHIUM-AIR ACCUMULATOR AND PREPARATION METHOD THEREOF Russian patent published in 2016 - IPC H01M12/00 H01M12/06 H01M4/02 H01M4/58 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely to lithium-air accumulator and method of its production, and can be used for power supply of various equipment. Proposed method comprises production of dry thermally expanded graphite, dispersion in organic solvent (for example, acetone, heptane, N-methyl-2-pyrrolidone) and application of obtained suspension at cathode current collector (nickel or stainless mesh or foil), as well as drying. High specific capacity and number of cycles of accumulator owing to use of carbon material with low degree of amorphisation and small number of defects. Specific capacity of cathode material makes 1,500 mA·h/g at current density of 0.01 mA/cm².

EFFECT: this invention consists in fact that lithium-air accumulator is filled with non-aqueous lithium-conducting electrolyte, cathode and anode are separated by solid lithium-conducting electrolyte in form of glass-ceramic membrane germanium and aluminium phosphate-based, at cathode current collector is thermally expanded graphite.

2 cl, 4 dwg