Template synthesized double perovskite magnesium-ion battery anode material and preparation method thereof
A magnesium ion battery, double perovskite technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of shortening the diffusion time of magnesium ions, affecting the reversibility of materials, grain growth and agglomeration, etc. The rate of redox reaction, the effect of reducing electron transfer resistance, and improving the conductivity of magnesium ions
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Embodiment 1
[0021] Example 1: Magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, europium nitrate hexahydrate, barium nitrate, chromium nitrate nonahydrate, zinc nitrate hexahydrate, ammonium tungstate hydrate, and ferric nitrate nonahydrate are in accordance with the stoichiometric formula Mg 0.9 Ba 0.1 Y 0.8 Eu 0.2 Cr 0.9 Zn 0.1 W 0.9 Fe 0.1 O 6 Mix in the ratio of, add citric acid 5 times the amount of total metal ions and add water and stir to form a total metal ion concentration of 1.0 mol·L -1 The initial aqueous solution; mix 6g acrylamide / 100mL water acrylamide and 1gN,N'-methylenebisacrylamide / 100mL water N,N'-methylenebisacrylamide and water, and dissolve the acrylamide in the solution The amount of the substance is 0.5 times the amount of the total metal ion substance in the initial aqueous solution; after stirring for 5 minutes at a speed of 1500 rpm using a polytetrafluoroethylene stirring blade, it is raised to 75°C at a speed of 5°C / min and maintained at this temperatu...
Embodiment 2
[0022] Example 2: Magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, europium nitrate hexahydrate, barium nitrate, chromium nitrate nonahydrate, zinc nitrate hexahydrate, ammonium tungstate hydrate, and ferric nitrate nonahydrate are in accordance with the stoichiometric formula Mg 0.9 Ba 0.1 Y 0.8 Eu 0.2 Cr 0.9 Zn 0.1 W 0.9 Fe 0.1 O 6 Mix in the proportion of, add citric acid 10 times the amount of total metal ions and add water and stir to form a total metal ion concentration of 2.5mol·L -1 The initial aqueous solution; mix 6g acrylamide / 100mL water acrylamide and 1gN,N'-methylenebisacrylamide / 100mL water N,N'-methylenebisacrylamide and water, and dissolve the acrylamide in the solution The amount of the substance is 0.8 times the amount of the total metal ion substance in the initial aqueous solution; after stirring for 10 minutes at a speed of 1800 rpm with a polytetrafluoroethylene stirring blade, it is raised to 80°C at a speed of 7°C / min and maintained at this temp...
Embodiment 3
[0023] Example 3: Magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, europium nitrate hexahydrate, barium nitrate, chromium nitrate nonahydrate, zinc nitrate hexahydrate, ammonium tungstate hydrate, and ferric nitrate nonahydrate according to the stoichiometric formula Mg 0.9 Ba 0.1 Y 0.8 Eu 0.2 Cr 0.9 Zn 0.1 W 0.9 Fe 0.1 O 6 Mix in the ratio, add citric acid 8 times the amount of total metal ions and add water and stir evenly to form a total metal ion concentration of 2mol·L -1 The initial aqueous solution; mix 6g acrylamide / 100mL water acrylamide and 1gN,N'-methylenebisacrylamide / 100mL water N,N'-methylenebisacrylamide and water, and dissolve the acrylamide in the solution The amount of the substance is 1.2 times the amount of the total metal ion substance in the initial aqueous solution; use a polytetrafluoroethylene stirring blade to stir at 2000rpm for 15 minutes, then increase it to 85°C at a speed of 10°C / min and maintain the temperature Until it becomes a jelly-l...
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