Electrospinning preparation method for cobaltosic oxide carbon nanometer fibers for sodium-n battery
A carbon nanofiber, sodium-ion battery technology, applied in battery electrodes, nanotechnology for materials and surface science, nanotechnology and other directions, can solve the problem of limiting the large-scale use of sodium-ion battery anode materials, reducing the rate performance of electrode materials, Problems such as low electron/ion conductivity, to achieve the effect of promoting penetration and electron/ion transfer, excellent charge and discharge rate performance, and increasing specific surface area
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Embodiment 1
[0020] Embodiment 1, sodium ion battery uses Co 3 o 4 An electrospinning preparation method for carbon nanofibers, comprising the following steps:
[0021] 1) Configuration of electrospinning precursor body fluid: Co 2+ The salt is dissolved in the mixed solution of deionized water and organic solvent according to the volume ratio of 1:1, Co 2+ The mass volume ratio of the quality of the salt to the mixed solution of deionized water and organic solvent is 0.14g / mL; then add polyvinylpyrrolidone (PVP) powder to the mixed solution, and stir to obtain a uniform electrospinning precursor liquid (PVP) is 0.08g / mL with the mass volume ratio of deionized water and organic solvent mixed solution;
[0022] The Co 2+ The salt is cobalt nitrate;
[0023] Described organic solvent is ethanol;
[0024] Described polyvinylpyrrolidone (PVP) molecular weight is 1,300,000;
[0025] 2) Preparation of Co by electrospinning 2+ Salt / PVP composite fiber membrane: electrospinning with the el...
Embodiment 2
[0031] Embodiment 2, sodium ion battery uses Co 3 o 4 An electrospinning preparation method for carbon nanofibers, comprising the following steps:
[0032] 1) Configuration of electrospinning precursor body fluid: Co 2+ The salt is dissolved in the mixed solution of deionized water and organic solvent according to the volume ratio of 1:1, Co 2+ The mass-volume ratio of the quality of the salt to the mixed solution of deionized water and organic solvent is 0.16g / mL; (PVP) is 0.10g / mL with the mass volume ratio of deionized water and organic solvent mixed solution;
[0033] The Co 2+ The salt is cobalt chloride;
[0034] Described organic solvent is methanol;
[0035] Described polyvinylpyrrolidone (PVP) molecular weight is 1,300,000;
[0036] 2) Preparation of Co by electrospinning 2+ Salt / PVP composite fiber membrane: electrospinning with the electrospinning precursor liquid obtained in step 1) to obtain Co 2+ Salt / PVP composite fiber membrane, spinning voltage 12kV; ...
Embodiment 3
[0041] Embodiment 3, sodium ion battery uses Co 3 o 4 An electrospinning preparation method for carbon nanofibers, comprising the following steps:
[0042] 1) Configuration of electrospinning precursor body fluid: Co 2+ The salt is dissolved in the mixed solution of deionized water and organic solvent according to the volume ratio of 1:1, Co 2+ The mass-volume ratio of the quality of the salt to the mixed solution of deionized water and organic solvent is 0.18g / mL; The mass volume ratio of (PVP) and deionized water and organic solvent mixed solution is 0.12g / mL;
[0043] The Co 2+ The salt is cobalt sulfate;
[0044] The organic solvent is N,N-dimethylformamide (DMF);
[0045] Described polyvinylpyrrolidone (PVP) molecular weight is 1,300,000;
[0046] 2) Preparation of Co by electrospinning 2+ Salt / PVP composite fiber membrane: electrospinning with the electrospinning precursor liquid obtained in step 1) to obtain Co 2+ Salt / PVP composite fiber membrane, the spinning...
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