Preparation method of polysulfide/iodine liquid flow battery electrode based on COS2-CoS n-n semiconductor junctions
A cos2-cosn-n, semiconductor technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of increased charge-discharge potential difference, side reactions of hydrogen evolution, and reduced current density, achieving high crystallinity, Low production cost and improved electrical conductivity
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Embodiment 1
[0040] A CoS-based 2 -CoS n-n semiconductor junction polysulfide / iodine flow battery electrode preparation method:
[0041] (1) Using a one-step solvothermal method, 1mmol CoSO 4 ·7H 2 O, 10mmol urea and 25mmol sublimated sulfur were added to 70mL of a mixed solvent of ethylene glycol and N,N-dimethylformamide, the volume ratio of ethylene glycol and N,N-dimethylformamide was 0.9, and stirred at room temperature 1 hour;
[0042] (2) Transfer it to a 100mL autoclave and react at 180°C for 12h;
[0043] (3) After the reaction is finished, cool to room temperature, obtain the precipitate obtained by centrifugation at a speed of 7000rpm for 5min, wash the product twice with deionized water and once with absolute ethanol, and then dry the product under vacuum at 60°C for 6h, namely get black CoS 2 / CoS powder product. CoS was synthesized by a similar method 2 and CoS, adjust the volume ratio of ethylene glycol and N,N-dimethylformamide to 0.5 and 2, respectively, and stir at...
Embodiment 2
[0050] According to the method of embodiment 1, difference is that metal cobalt salt used is cobalt nitrate.
Embodiment 3
[0052] According to the method of embodiment 1, difference is that metal cobalt salt used is cobalt oxide.
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