Quasi-solid nano-composite gel electrolyte, its production and use
A gel electrolyte and nano-composite technology, which is applied in the interdisciplinary field of chemical engineering and nano-material technology, can solve the problems of increasing the steady-state diffusion current and apparent diffusion coefficient, liquid electrolyte batteries are difficult to seal, easy to leak, etc., to achieve Improvement of charge transport ability, improvement of sealing and leakage, and improvement of photovoltage effect
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Embodiment 1
[0056] Example 1: Weigh 0.02g, 0.04g, 1.5g, 0.15g, 0.045g, 0.09g, 0.25g lithium iodide, iodine, 3-methoxypropionitrile, vinylidene fluoride-hexafluoropropylene copolymer, respectively , Nano titanium dioxide particles, N-methylbenzimidazole, 1,2-dimethyl-3-propylimidazole iodine. Place the weighed lithium iodide, iodine, 3-methoxypropionitrile, N-methylbenzimidazole and 1,2-dimethyl-3-propylimidazole iodine in a sealable clean container. Disperse ultrasonically for 15 minutes to mix the system uniformly to form a liquid or ionic liquid electrolyte, and then add vinylidene fluoride-hexafluoropropylene copolymer and nano titanium dioxide particles to it. After the container is sealed, magnetic stirring is used to make the system evenly mixed, and the mixture in the container is heated to 100° C. and kept for 2 hours. Stirring continuously during the heating process makes the whole system evenly mixed. In order to make the nanoparticles in the system uniformly dispersed, an ultrasoni...
Embodiment 2
[0058] Example 2: Weigh 0.02g, 0.04g, 1.5g, 0.15g, 0.105g, 0.09g, 0.25g lithium iodide, iodine, 3-methoxypropionitrile, vinylidene fluoride-hexafluoropropylene copolymer, respectively , Nano titanium dioxide particles, N-methylbenzimidazole, 1,2-dimethyl-3-propylimidazole iodine. The quasi-solid nanocomposite gel electrolyte was prepared according to the manufacturing method described in Example 1. Do cyclic voltammetry with electrochemical workstation to get I 3 - The steady-state diffusion current and apparent diffusion coefficient are 1.50×10 -7 A and 3.89×10 -10 m 2 / s, I - The steady-state diffusion current and apparent diffusion coefficient are 2.34×10 -7 A and 3.04×10 -10 m 2 / s.
Embodiment 3
[0059] Example 3. Weigh 0.02g, 0.04g, 1.5g, 0.15g, 0.15g, 0.09g, 0.25g lithium iodide, iodine, 3-methoxypropionitrile, vinylidene fluoride-hexafluoropropylene copolymer , Nano titanium dioxide particles, N-methylbenzimidazole, 1,2-dimethyl-3-propylimidazole iodine. The quasi-solid nanocomposite gel electrolyte was prepared according to the manufacturing method described in Example 1. Do cyclic voltammetry with electrochemical workstation to get I 3 - The steady-state diffusion current and apparent diffusion coefficient are 1.65×10 -7 A and 4.27×10 -10 m 2 / s. I - The steady-state diffusion current and apparent diffusion coefficient are 2.24×10 -7 A and 2.90×10 -10 m 2 / s.
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