A composite lithium-ion battery negative electrode material li 3 vo 4 /ag and its preparation method
A negative electrode material, ion battery technology, applied in the field of electrochemical power supply, can solve the problems of poor conductivity, unsatisfactory electrochemical performance, low Coulomb efficiency, etc., and achieve the effects of easy operation, good cycle performance and good repeatability
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Embodiment 1
[0019] The material synthesis steps are as follows:
[0020] 1) Lithium carbonate and vanadium pentoxide were respectively weighed 1 mmol and 3 mmol according to the molar ratio of 1:3 and dissolved in beakers A and B containing 10 ml of deionized water, and stirred on a magnetic stirrer for 20 min to fully dissolve;
[0021] 2) Weigh 5mmol of hexamethylenetetramine and dissolve it in beaker C containing 10ml of deionized water, transfer the solutions in beakers B and C in step 1) to beaker A, and stir on a magnetic stirrer for 40min to obtain the color homogeneous solution;
[0022] 3) Transfer the uniform color solution obtained in step 2) into the lining of a 50ml hydrothermal kettle, add deionized water to 80% of its volume, react in a blast oven at 120°C for 24h, and naturally cool to room temperature;
[0023] 4) Slowly add the theoretical silver content of Li to the product obtained in step 3) 3 VO 4 5% silver nitrate solution by mass;
[0024] 5) After the intermed...
Embodiment 2
[0027] The material synthesis steps are as follows:
[0028] 1) Lithium carbonate and vanadium pentoxide were respectively weighed 1 mmol and 3 mmol according to the molar ratio of 1:3 and dissolved in beakers A and B containing 10 ml of deionized water, and stirred on a magnetic stirrer for 20 min to fully dissolve;
[0029] 2) Weigh 5mmol of hexamethylenetetramine and dissolve it in beaker C containing 10ml of deionized water, transfer the solutions in beakers B and C in step 1) to beaker A, and stir on a magnetic stirrer for 40min to obtain the color homogeneous solution;
[0030] 3) Transfer the uniform color solution obtained in step 2) into the lining of a 50ml hydrothermal kettle, add deionized water to 80% of its volume, react in a blast oven at 120°C for 24h, and naturally cool to room temperature;
[0031] 4) Slowly add the theoretical silver content of Li to the product obtained in step 3) 3 VO 4 5% silver nitrate solution by mass;
[0032]5) After the intermedi...
Embodiment 3
[0035] The material synthesis steps are as follows:
[0036] 1) Lithium carbonate and vanadium pentoxide are respectively weighed 1mmol and 3mmol according to mol ratio 1:3 and dissolved in the A and B beakers containing 10ml distilled water, and stirred for 20min on a magnetic stirrer to make it fully dissolved;
[0037] 2) Weigh 5mmol of hexamethylenetetramine and dissolve it in beaker C containing 10ml of distilled water, transfer the solutions in beakers B and C in step 1) to beaker A, and stir on a magnetic stirrer for 40min to obtain uniform color. solution;
[0038] 3) Transfer the uniform color solution obtained in step 2) to the lining of a 50ml hydrothermal kettle to 80% volume, react in a blast oven at 120°C for 24h, and naturally cool to room temperature;
[0039] 4) adding the silver nitrate that theoretical silver content is 5% in the product obtained in step 3);
[0040] 5) After the intermediate product obtained by the reaction in step 4) was placed in an oil...
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