Electrochemical preparation method for metal sulfide, and application method of electrochemical preparation method
A metal sulfide and electrochemical technology, which is applied in the manufacture of hybrid/electric double layer capacitors, circuits, electrical components, etc., can solve the problems of high energy consumption and high pollution of sulfur sources, and achieve low energy consumption and simple preparation process , time-consuming effect
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Embodiment 1
[0043] An electrochemical preparation method for metal sulfides, comprising the steps of:
[0044] (1) Weigh elemental sulfur and mix it with polypyrrole, and melt sulfur at 155 °C for 10 h. Then weigh the sulfur-loaded material, mix it with conductive carbon and binder, apply it on carbon paper, and dry it for later use.
[0045] (2) Add 0.1 M Co(NO 3 ) 2 Dissolved in absolute ethanol solution, the electrode prepared above was used as the working electrode, the graphite paper was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode, and the unipolar pulse method -0.85 V was deposited 2000 times to obtain the cobalt sulfide working electrode .
[0046] (3) Apply the working electrode to the supercapacitor, at 10 mA·cm -2 The capacity retention rate of 10,000 cycles under the current density is 76%, at 20 mA·cm -2 Specific capacity at current density compared to 1 mA cm -2 The current density capacity retention rate is 85%...
Embodiment 2
[0048] An electrochemical preparation method for metal sulfides, comprising the steps of:
[0049] (1) Weigh elemental sulfur and mix it with polypyrrole, and carry sulfur in steam at 155 °C for 12 h. Then weigh the sulfur-loaded material, mix it with conductive carbon and binder, apply it on carbon cloth, and dry it for later use.
[0050] (2) The sulfur-loaded material was used as the working electrode, the platinum sheet was used as the counter electrode, and the silver / silver chloride electrode was used as the reference electrode in 0.1M Ni(NO 3 ) 2 Nickel sulfide working electrode was prepared by depositing at a constant potential of -0.80 V for 2 h in absolute ethanol solution.
[0051] (3) Applying the working electrode to sodium-ion batteries, at 100 mA·g -1 Specific capacity reaches 350mAh·g at current density -1 , 2 A·g -1 Specific capacity at current density compared to 100 mA·g -1 The current density capacity retention rate is 70%, showing good electrochemica...
Embodiment 3
[0053] An electrochemical preparation method for metal sulfides, comprising the steps of:
[0054] (1) Weigh polyaniline and mix it with elemental sulfur, and melt sulfur at 155 °C for 10 h. Then weigh the sulfur-loaded material, mix it with conductive carbon and binder, apply it on carbon paper, and dry it for later use.
[0055] (2) The sulfur-loaded material was used as the working electrode, the carbon cloth was used as the counter electrode, and the mercury / mercury oxide electrode was used as the reference electrode at 0.1 MCoCl 2 Cobalt sulfide working electrode was prepared by unipolar pulse method -0.80 V deposition for 4000 times in acetonitrile solution.
[0056] (3) Apply the working electrode to the electrolysis of water to produce hydrogen, at 10 mA·cm -2 The overpotential was maintained at 180 mV at the current density.
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