A method for inhibiting growth of zinc dendrites in a zinc battery
A zinc dendrite and zinc battery technology, applied in the field of material chemistry, can solve problems such as dendrite growth, zinc electrode deformation, and application constraints of secondary zinc batteries, so as to maintain stable battery voltage, inhibit zinc dendrite growth, and improve usage The effect of longevity
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Embodiment 1
[0020] Cut natural silkworm cocoons into discs with a diameter of 20 mm, wash with ethanol to remove impurities, soak in ethanol solution containing 0.2% by mass percentage of 4,4'-diamino-2,2'-bipyridyl, and ultrasonically vibrate for 4 hours , take out the cocoon slices, put them in an oven to dry at 80°C for 2 hours, and obtain cocoon slices with 4,4'-diamino-2,2'-bipyridine on the surface, and then transfer the above cocoon slices into a tube furnace, in N 2 Calcined at 700°C for 4 hours in the atmosphere, and then cooled down to room temperature naturally to obtain a carbonized silk protein doped material. Its structure is tested by powder X-ray diffraction (XRD), and the results show that the two diffraction peaks in the figure are the diffraction peaks of carbon ( figure 1 ); The morphology of the prepared material was observed with a scanning electron microscope (SEM), and the results showed that the material was nanofibrous ( figure 2 ); use the prepared carbonized...
Embodiment 2
[0022] Cut natural silk cocoons into discs with a diameter of 16mm, wash with ethanol to remove impurities, soak in ethanol solution containing 0.05% by mass percentage of 4,4'-diamino-2,2'-bipyridine, and ultrasonically shake for 4 hours , take out the cocoon pieces, put them in an oven and dry them at 80°C for 2 hours to get the cocoon pieces with 4,4'-diamino-2,2'-bipyridine attached on the surface, and then transfer them into a tube furnace, under N 2 Calcined at 400°C for 6 hours in the atmosphere, and then cooled down to room temperature naturally to obtain a carbonized silk protein doped material. The materials prepared above were subjected to XRD, SEM test analysis and electrochemical performance test.
Embodiment 3
[0024] Cut natural silk cocoons into discs with a diameter of 18 mm, wash with ethanol to remove impurities, soak in ethanol solution containing 0.1% by mass percentage of 4,4'-diamino-2,2'-bipyridine, and ultrasonically vibrate for 4 hours , take out the cocoon pieces, put them in an oven and dry them at 80°C for 2 hours to get the cocoon pieces with 4,4'-diamino-2,2'-bipyridine attached on the surface, and then transfer them into a tube furnace, under N 2 Calcined at 500°C for 5 hours in the atmosphere, and then cooled down to room temperature naturally to obtain a carbonized silk protein doped material. The materials prepared above were subjected to XRD, SEM test analysis and electrochemical performance test.
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