FIELD: chemistry.
SUBSTANCE: invention relates to chemical synthesis, in particular to a method of producing copper-doped sodium trititanate with a hierarchical micro/nanostructure, which is promising for use in sodium-ion batteries as a negative electrode material. Method involves hydrothermal treatment of titanium (IV) chloride and trihydrate copper (II) nitrate, which are mixed in an aqueous solution of 10 M NaOH with addition of 36 wt. % hydrogen peroxide at temperatures of 150–180 °C for 18 hours, with subsequent washing, drying in air for 2 hours at temperature of 120 °C and annealing at temperature of 500 °C for 2 hours.
EFFECT: method enables to obtain a single-phase copper-doped sodium trititanate, having a two-level structure of microparticles consisting of nanotubes and nanosheets, with reduced synthesis time.
1 cl, 5 dwg, 4 ex
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