METHOD FOR PREPARATION AND ASSEMBLY OF A STORAGE CELL CONSISTING OF CYANOCOMPLEX OF TRANSITION METALS AS A CATHODE, NON-GRAPHITIZED CARBON AS AN ANODE AND ANHYDROUS ELECTROLYTE, FOR POTASSIUM-ION ACCUMULATORS Russian patent published in 2020 - IPC H01M10/54 H01M10/56 H01M4/133 H01M4/587 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in production of potassium-ion batteries and batteries based thereon. Disclosed is a cell of a potassium-ion battery, comprising a cathode made of a cathode composition containing a cyanocomplex of transition metals as an active cathode material, anode made from anode composition containing non-graphitized carbon as active anode material, and anhydrous organic electrolyte containing potassium hexafluorophosphate salt KPF₆. Cyanocomplex of transition metals used is a compound of formula K_xM1_kM3_1-k[M2(CN)₆]_y·zH₂O, where M1, M2 and M3 – transition metals, which can be identical or different, 0<x<4, 0≤k≤1, 0<y<2 and 0<z<20, preferably a connection is used K_xMn[Fe(CN)₆]_y×zH₂O. Cathode composition preferably includes K_xM1_kM3_1-k[M2(CN)₆]_y·zH₂O in amount of 35–99 wt%, one or more electroconductive additives and one or more organic binding components. Anode composition includes non-graphitized carbon, one or more electroconductive additives and one or more organic binding components, wherein content of non-graphitized carbon is 35–99 wt%. Electrolyte used is a solution of a salt of KPF₆ or a mixture of KPF₆ with K[N(SO₂F)₂] and/or K[N(SO₂CF₃)₂] with concentration of 0.1–8 M in a liquid organic solvent, preferably diethylene glycol dimethyl ether is used as a solvent.

EFFECT: higher stability of charge-discharge cycling characteristics is technical result of invention; with discharge capacity of 100 mA·h·g^-1 with preservation of more than 89 %, up to 300 charge-discharge cycles are provided.

7 cl, 7 dwg, 1 tbl, 5 ex