S-doped SnSe/CNTs composite flexible film and preparation method thereof
A kind of flexible thin film and thin film technology, which is applied in the manufacture/processing of thermoelectric devices, the material of lead wires of thermoelectric device nodes, etc., can solve the problem of lack of mechanical flexibility of flexible inorganic thermoelectric thin films, so as to improve the carrier transport ability and excellent Electrical performance, the effect of improving stability
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[0024] The present invention provides a method of preparing a S-doped SNSE / CNTS composite flexible film, comprising the steps of:
[0025] Step 1, put NA 2 SEO 3 Sncl 1 ~ 10mmol 2 · 2h 2 O Dissolve in a solution of 40 ml of ethylene glycol solution in 1-x: 1 molar ratio, resulting in solution a, press S 2- Ion content and se 2- The ion ratio is 1-x: X, 0 <x ≤ 0.05, and the single tissue S is dissolved in solution A to obtain a solution B;
[0026] Step 2, weigh 0.1 to 0.5 mg of CNTs ultrasonic dispersion to obtain solution C in solution B;
[0027] Step 3, place the solution C into the reaction kettle, the heat reaction of the solvent, temperature 180 ~ 230 ° C, time 12 to 36 h, the reaction is completed, and the resulting product system is centrifuged, the product D is obtained, and the product D is in a vacuum drying box The dry product D is dried in 8 ~ 12h, the temperature is 70 ° C, and the dry product D is obtained;
[0028] Step 4, disperse the dried product D is disperse...
Embodiment 1
[0033] Step 1, put NA 2 SEO 3 And 1 mmol SNCL 2 · 2h 2 O Dissolve in a solution of 40 ml of ethylene glycol solution in 1-x: 1 molar ratio, resulting in solution a, press S 2- Ion content and se 2- The ion ratio is 1-x: x, x = 0.01, and S is dissolved in solution A to give a solution B;
[0034] Step 2, weigh 0.1 mg of CNTs ultrasonic dispersion in solution B;
[0035] Step 3, the solution C is placed in the reaction kettle, and the heat reaction of the solvent is carried out, the temperature is 200 ° C, time 36 h, and the resulting product system passes through centrifugation, the product D is obtained, and the product D is dried in a vacuum drying tank. Temperature 70 ° C, manufactured product D;
[0036] Step 4, disperse the dried product D is dispersed in 10 mL of ethanol solution, vacuum filtration, liquid filtering time 0.5, to obtain a film E;
[0037] Step 5, dry the film E in a drying tank, dry the temperature of 60 ° C, resulting in the final new microplate structure of ...
Embodiment 2
[0040] Step 1, put NA 2 SEO 3 And 5mmol SNCL 2 · 2h 2 O Dissolve in a solution of 40 ml of ethylene glycol solution in 1-x: 1 molar ratio, resulting in solution a, press S 2- Ion content and se 2- The ion ratio is 1-x: X, X = 0.02, and S is dissolved in solution A to obtain solution B;
[0041] Step 2, weigh 0.2 mg of CNTs ultrasonic dispersion in solution B;
[0042] Step 3, the solution C is placed in the reactor, and the heat reaction of the solvent is carried out, the temperature is 210 ° C, time 30 h, after the end, the resulting product system is centrifuged, and the product D is obtained, and the product D is dried in a vacuum drying tank. Temperature 70 ° C, manufactured product D;
[0043] Step 4, disperse the dried product D is dispersed in 10 mL of ethanol solution, vacuum filtration, filtering time of 1 h, resulting in a film E;
[0044] Step 5, dry the film E to dry 6 h in a dry box, dry the temperature of 70 ° C, to obtain the final new microplate structure SNSE 1-x ...
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