Preparation method of PEDOT@beta-FeOOH/rGO array type lithium ion battery negative electrode material
A technology for lithium ion batteries and negative electrode materials, applied in the field of electrochemistry, can solve the problems of poor conductivity and large volume expansion, and achieve the effects of low cost, easy implementation and simple experimental method.
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Embodiment 1
[0027] 1) Disperse commercially available graphene oxide in 25mL deionized water to form a 1mg / mL solution, and then disperse it with a 300W ultrasonic generator for 1h to form a uniformly dispersed graphene oxide suspension A;
[0028] 2) Add the analytically pure soluble ferric salt hexahydrate ferric chloride to the above suspension A, add 0.01mLEDOT dropwise under stirring condition, and then fully stir to dissolve the ferric salt and disperse the EDOT evenly, and prepare ferric salt and A mixed solution of graphene oxide and EDOT, wherein the concentration of iron salt is 0.05mol / L, and then the mixed solution is dispersed by a 300W ultrasonic generator for 2h to obtain a suspension B;
[0029] 3) Pour the suspension B prepared above into the polytetrafluoroethylene lining of the homogeneous hydrothermal reactor, the filling degree is 30%, then seal the reactor, and put it into the homogeneous hydrothermal reactor Carry out hydrothermal reaction at 50°C for 5 hours, and n...
Embodiment 2
[0035] 1) Disperse commercially available graphene oxide in 30mL deionized water to form a 2mg / mL solution, and then disperse it with a 300W ultrasonic generator for 3h to form a uniformly dispersed graphene oxide suspension A;
[0036] 2) Add the analytically pure soluble ferric salt hexahydrate ferric chloride to the above suspension A, add 0.02mLEDOT dropwise under stirring condition, and then fully stir to dissolve the ferric salt and disperse the EDOT evenly, and configure the ferric salt and A mixed solution of graphene oxide and EDOT, wherein the concentration of iron salt is 0.3mol / L, and then the mixed solution is dispersed for 3 hours by a 300W ultrasonic generator to obtain a suspension B;
[0037] 3) Pour the suspension B prepared above into the polytetrafluoroethylene lining of the homogeneous hydrothermal reactor, the filling degree is 80%, then seal the reactor, and then put it into the homogeneous hydrothermal reactor Carry out hydrothermal reaction at 70°C for...
Embodiment 3
[0041] 1) Disperse commercially available graphene oxide in 35 mL deionized water to form a 5 mg / mL solution, and then disperse it with an ultrasonic generator for 2 hours to form a uniformly dispersed graphene oxide suspension A;
[0042] 2) Add the analytically pure soluble iron salt heptahydrate ferrous sulfate to the above suspension A, add 0.025mLEDOT dropwise under stirring condition, and then fully stir to dissolve the iron salt and evenly disperse the EDOT, and configure it into iron salt and oxidation A mixed solution of graphene and EDOT, wherein the concentration of the iron salt is 0.5mol / L, and then the mixed solution is dispersed for 4 hours by a 300W ultrasonic generator to obtain a suspension B;
[0043] 3) Pour the suspension B prepared above into the polytetrafluoroethylene lining of the homogeneous hydrothermal reactor, the filling degree is 60%, then seal the reactor, and then put it into the homogeneous hydrothermal reactor Carry out hydrothermal reaction at...
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