Silk protein carbonization material for suppressing lithium dendrites growth
A technology of fibroin and carbonized materials, applied in the field of material chemistry, to achieve the effects of inhibiting the growth of lithium dendrites, improving safety, and uniform deposition
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Embodiment 1
[0017] Select natural silkworm cocoons with a thickness of 0.5mm, cut them into discs with a diameter of 13mm, wash them with ethanol to remove impurities, soak them in 0.01% by mass 1,2,4-triazole aqueous solution for 2 hours, and then cut the natural silkworm cocoons Take it out, dry it in an oven at 100°C for 3 hours, then transfer it to a tube furnace, 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 material. The obtained carbonized silk was observed with a scanning electron microscope (SEM) for its morphology ( figure 1 ), the results show that the carbonized filaments still maintain a linear shape and are distributed in layers, and the surface of the material has different voids. The prepared silk protein carbonized material is used as the surface protective layer material of the lithium electrode of the lithium battery, and the current density is 0.5mA cm -2 In this case, the ba...
Embodiment 2
[0019] Select natural silkworm cocoons with a thickness of 0.5mm, cut them into discs with a diameter of 13mm, wash them with ethanol to remove impurities, soak them in 0.1% by mass 1,2,4-triazole aqueous solution for 2 hours, and then cut the natural silkworm cocoons Take it out, dry it in an oven at 100°C for 3 hours, then transfer it to a tube furnace, 2 Calcined at 550°C for 6 hours in the atmosphere, and then cooled down to room temperature naturally to obtain a silk protein carbonized material. The prepared fibroin carbonized material is used as the surface protection layer material of lithium battery electrodes.
Embodiment 3
[0021] Select natural silkworm cocoons with a thickness of 0.5mm, cut them into discs with a diameter of 13mm, wash with ethanol to remove impurities, soak in 0.05% 1,2,4-triazole aqueous solution containing 0.05% by mass for 2 hours, and then cut the natural silkworm cocoons Take it out, dry it in an oven at 100°C for 3 hours, then transfer it to a tube furnace, 2 Calcined at 650°C for 5 hours in the atmosphere, and then cooled down to room temperature naturally to obtain a fibroin carbonized material. The prepared fibroin carbonized material is used as the surface protection layer material of lithium battery electrodes.
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