▎ 摘　　要

NOVELTY - Growing zinc vanadate oxide (ZnV2O6)/graphene-single-walled carbon nanotubes (SWCNTs) material with ionic liquid assisted in-situ composite specific crystal surface in zinc ion battery comprises e.g. (i) using high specific surface area graphene/single wall carbon nanotube materials, trihexyltetradecylphosphine chloride (P6,6,6,14)(Cl) ionic liquid, zinc nitrate and ammonium metavanadate are raw materials, compounding the zinc vanadate oxide nanowires grown on the surface of graphene with specific crystal planes in situ by microwave radiation, where material exhibits good zinc storage performance as a cathode material for zinc-ion batteries and has achieved good technical effects, adding the conductivity of the material, (ii) adding 0.1000-1.0000 g graphene powder material and adding to 50 ml distilled water, and fully stirring to obtain homogeneous suspension A, and (iii) transferring the suspension, then assembling into the atmospheric microwave reactor with reflux device. USE - The method is useful for growing zinc vanadate oxide/graphene-single-walled carbon nanotubes material with ionic liquid assisted in-situ composite specific crystal surface in zinc ion battery. ADVANTAGE - The method: has high specific area and good conductivity; exhibits good zinc storage performance as cathode material in zinc ion batteries; and provides good technical foundation and practical experience for improving the comprehensive electrochemical performance of zinc ion batteries. DETAILED DESCRIPTION - Growing zinc vanadate oxide (ZnV2O6)/graphene-single-walled carbon nanotubes (SWCNTs) material with ionic liquid assisted in-situ composite specific crystal surface in zinc ion battery comprises (i) using high specific surface area graphene/single wall carbon nanotube materials, trihexyltetradecylphosphine chloride (P6,6,6,14)(Cl) ionic liquid, zinc nitrate and ammonium metavanadate are raw materials, compounding the zinc vanadate oxide nanowires grown on the surface of graphene with specific crystal planes in situ by microwave radiation, where material exhibits good zinc storage performance as a cathode material for zinc-ion batteries and has achieved good technical effects, adding the conductivity of the material, conductive carbon materials during the experiment, where the carbon raw material is high specific surface area graphene/multi-wall carbon nanotube material, specific surface area of this material is 1200-1800 m2/g, assembling graphene ultra-thin nanosheets by crosslinked graphene nanosheets with 0.37 nm interlayer spacing, embedding single-walled carbon nanotubes with diameter of 3-5 nm on the surface, (ii) adding 0.1000-1.0000 g graphene powder material and adding to 50 ml distilled water, then adding 0.2000 g (P6,6,6,14)(Cl) ionic liquid analysis pure raw material, fully stirring for 1 hour to obtain homogeneous suspension A, (iii) transferring the suspension a obtained in the second step to a 200 ml quartz round bottom flask, then assembling into the atmospheric microwave reactor with reflux device, controlling reaction temperature at 80-100 degrees C, and regulating the equipment power at 500-1200 watts, heating for 1 hour to obtain adsorbed suspension B, where the core innovation is to effectively adsorbing ionic liquid on the surface of graphene/multi-walled carbon nanotubes under the action of a microwave field, which provides experimental conditions for the subsequent in-situ one-dimensional nanomaterial directed growth, (iv) adding 0.5850 g ammonium metavanadate solid to the above-mentioned post-adsorption suspension B, and stirring for 1 hour until it is completely dissolved to obtain suspension C, transferring the suspension C obtained in the step (iv) to an atmospheric microwave reactor with a reflux device, reacting temperature is controlled at 80-100 degrees C, and adjusting the equipment power at 500-1200 watts, heating for 10 minutes to obtain secondary adsorption suspension D, The core innovation is to further adsorb the vanadate radical in (P6,6,6,14)(Cl) containing phosphine functional group ionic liquid on the surface of graphene/multi-walled carbon nanotubes under the action of microwave radiation, and facilitating the orderly growth of crystals along a specific crystal plane in the next reaction process, (v) adding 50 ml solution, where the molar concentration is 0.20 mol/l zinc nitrate solution, fully stirring for 20 minutes, continuously transferring to atmospheric microwave reactor with reflux device, controlling reaction temperature at 80-100 degrees C, and regulating the heating power of the equipment at 500-1200 watts, heating for 8 hours to obtain resulting black agglomerated suspension E, slowly cooling suspension E to room temperature, washing with distilled water 4, rinsing with ethanol once, and placing in a vacuum drying oven at 80 degrees C for 24 hours, using zinc vanadate nanorod/graphene/multi-walled carbon nanotube, where the X-ray diffraction test shows phase of this material is monoclinic m-zinc vanadate oxide, corresponding unit cell parameters are and beta is 111.55 degrees C, space point group is C2(No.5) and corresponding ICDDJCPDS card number is No.74-1262, where SEM test shows that the diameter of m-ZnV2O6 nanorods is 40-80 nm and the length is 20-30 microns, which are embedded in-situ on the surface of graphene/multi-walled carbon nanotubes, where HRTEM analysis test shows that the growth direction of m-zinc vanadate oxide nanorods is the dominant growth direction along the (010) direction, (vi) testing the energy storage performance of zinc vanadate nanorods/graphene/multi-walled carbon nanotubes in zinc-ion batteries, assembling the electrode material into a CR2032 button battery, where the working electrode is made of zinc vanadate nanorod/graphene/multi-wall carbon nanotube battery material, SP conductive carbon black and polyvinylidene fluoride powder are uniformly mixing according to the formula of 8:1:1, the dispersing solvent is N-methylpyrrolidone, and becoming uniform paste after stirring for 2 hours, uniformly coating on high-purity aluminum foil, and drying in a vacuum drying oven at 120 degrees C for 12 hours to obtain an electrode sheet, the aqueous electrolyte is 0.5mol/L zinc sulfate solution, where the counter electrode is metal zinc sheet with purity of 99.99%, 0.1C constant current charge and discharge performance test and cycle stability test show that: where material has good zinc storage capacity and capacity retention rate, and the overall performance has achieved good excellent results.