A preparation method of tungsten trioxide micro-nano particle gradient doped ternary material and the prepared ternary material and application
A technology of micro-nano particles and ternary materials, applied in electrical components, electrochemical generators, structural parts, etc., can solve problems such as high energy consumption and uneven doping of tungsten, and achieve reduction of residual alkali, performance improvement, performance superior effect
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Embodiment 1
[0039] A preparation method of tungsten trioxide micro-nano particle gradient doped ternary material, characterized in that it comprises the following steps:
[0040] (1) Weigh 0.107g tungstic acid and dissolve it in 5mL hydrogen peroxide solution with a mass fraction of 30%, then add 5mL deionized water, continue stirring for 6h, after forming a preliminary sol, continue to age for 12h to obtain a gel containing tungsten ions liquid;
[0041] (2) Weigh 20gLiNi 0.6 co 0.2 mn 0.2 o 2 Mix nickel-cobalt lithium manganate ternary material with 10mL hydrogen peroxide solution with a mass fraction of 30%, magnetically stir for 20min, and age for 0.5h to obtain a mixed solution, and then separate the mixed solution from solid-liquid to obtain a powder;
[0042] (3) Mix the glue solution prepared in step (1) with the powder obtained in step (2), grind it evenly to obtain the mixture, and then dry it in vacuum at 80° C. for 5 hours to obtain a dry powder;
[0043] (4) Sinter the d...
Embodiment 2
[0047] A preparation method of tungsten trioxide micro-nano particle gradient doped ternary material, characterized in that it comprises the following steps:
[0048] (1) Weigh 0.054g of tungstic acid and dissolve it in 5mL of hydrogen peroxide solution with a mass fraction of 30%, then add 25mL of deionized water, continue to stir for 6h, after forming a preliminary sol, continue to age for 12h to obtain a gel containing tungsten ions liquid;
[0049] (2) Weigh 20g of LiNi 0.7 co 0.1 mn 0.3 o 2 The nickel cobalt lithium manganate ternary material was mixed with 15mL of hydrogen peroxide solution with a mass fraction of 30%, magnetically stirred for 20min, and aged for 0.5h to obtain a mixed solution, and then the mixed solution was subjected to solid-liquid separation to obtain a powder;
[0050] (3) Mix the glue solution prepared in step (1) with the powder obtained in step (2), grind the mixture evenly to obtain the mixture, then dry the mixture in vacuum at 120° C. for...
Embodiment 3
[0055] A preparation method of tungsten trioxide micro-nano particle gradient doped ternary material, characterized in that it comprises the following steps:
[0056] (1) Weigh 0.141g of sodium tungstate and dissolve it in 10mL of hydrogen peroxide solution with a mass fraction of 30%, then add 80mL of deionized water, continue stirring for 6h, after forming a preliminary sol, continue to age for 12h to obtain a solution containing tungsten ions glue;
[0057] (2) Weigh 20g of LiNi 0.6 co 0.2 mn 0.2 o 2 The nickel cobalt lithium manganate ternary material was mixed with 10mL of hydrogen peroxide solution with a mass fraction of 30%, magnetically stirred for 5min, and aged for 0.5h to obtain a mixed solution, and then the mixed solution was subjected to solid-liquid separation to obtain a powder;
[0058] (3) Mix the glue solution prepared in step (1) with the powder obtained in step (2), grind it evenly to obtain the mixture, and then dry it in vacuum at 80° C. for 10 hour...
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