Preparation method of NH4V3O8 nanorods
A nanorod, solution technology, applied in nanotechnology, chemical instruments and methods, vanadium compounds, etc., can solve the problems of difficult control of the reaction process, occurrence of side reactions, long reaction time, etc., to improve electrochemical performance, uniform heating, etc. , the effect of short preparation cycle
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Embodiment 1
[0024] 1) The analytically pure ammonium metavanadate (NH 4 VO 3 ) was dissolved in deionized water at 60°C, stirred magnetically for 0.5h to dissolve ammonium metavanadate evenly, and prepared NH 4 + The concentration is 0.20mol / L of NH 4 VO 3 Solution, denoted as A solution;
[0025] 2) Use 6mol L ‐1 The hydrochloric acid solution adjusts the pH value of A solution to be 2.0, obtains B solution;
[0026]3) Transfer solution B into a reactor lined with polytetrafluoroethylene, control the filling ratio of the reactor to 50%, then seal the reactor with solution B, place it in a microwave hydrothermal reactor, and select In temperature control mode, the temperature is rapidly raised from room temperature to 120 °C at a heating rate of 40 °C / min, and kept for 30 minutes, then cooled to 70 °C, kept for 30 minutes, and then naturally cooled to room temperature, and the reactor was taken out to obtain a suspension;
[0027] 4) Centrifuge the suspension to obtain a powder pro...
Embodiment 2
[0032] 1) The analytically pure ammonium metavanadate (NH 4 VO 3 ) was dissolved in deionized water at 70°C, stirred by magnetic force for 0.5h to dissolve ammonium metavanadate evenly, and prepared into NH 4 + The concentration is 0.25mol / L of NH 4 VO 3 Solution, denoted as A solution;
[0033] 2) Use 5mol L ‐1 The hydrochloric acid solution adjusts the pH value of A solution to be 2.5, obtains B solution;
[0034] 3) Transfer solution B into a reactor lined with polytetrafluoroethylene, control the filling ratio of the reactor to 50%, then seal the reactor with solution B, place it in a microwave hydrothermal reactor, and select In temperature control mode, the temperature is rapidly raised from room temperature to 140 °C at a heating rate of 40 °C / min, and kept for 10 minutes, then cooled to 90 °C, kept for 30 minutes, and then naturally cooled to room temperature, and the reaction vessel was taken out to obtain a suspension;
[0035] 4) Centrifuge the suspension to ...
Embodiment 3
[0037] 1) The analytically pure ammonium metavanadate (NH 4 VO 3 ) was dissolved in deionized water at 65°C, stirred by magnetic force for 0.5h to dissolve ammonium metavanadate evenly, and prepared into NH 4 + The concentration of 0.15mol / L NH 4 VO 3 Solution, denoted as A solution;
[0038] 2) Use 4mol L ‐1 The hydrochloric acid solution adjusts the pH value of A solution to be 2.5, obtains B solution;
[0039] 3) Transfer solution B into a reactor lined with polytetrafluoroethylene, control the filling ratio of the reactor to 50%, then seal the reactor with solution B, place it in a microwave hydrothermal reactor, and select In temperature control mode, the temperature is rapidly raised from room temperature to 130°C at a heating rate of 40°C / min, and kept for 20 minutes, then cooled to 80°C, kept for 20 minutes, and then naturally cooled to room temperature, and the reactor is taken out to obtain a suspension;
[0040] 4) Centrifuge the suspension to obtain a powder...
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