Biomass lithium ion battery negative electrode material and preparation method thereof
A lithium-ion battery and negative electrode material technology, applied in the direction of active material electrodes, battery electrodes, negative electrodes, etc., can solve the problems of poor rate performance, low theoretical specific capacity, poor cycle performance, etc., to achieve rapid transmission, source Extensive, performance-enhancing effects
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Embodiment 1
[0029] The present embodiment provides a kind of preparation method of biomass lithium ion battery negative electrode material:
[0030] (1) Cellulose extraction
[0031] Wash and dry the wood powder at 100°C, crush it and pass through a 60-100 mesh sieve, weigh 10g of wood powder and extract with benzene / absolute ethanol for 12 hours, then suction filter and dry. Add the dried powder to 3% sodium hydroxide solution to react for 3 hours, after cleaning by suction filtration, add glacial acetic acid and 30% hydrogen peroxide to react at 60°C for 4 hours, ultrasonically disperse for 30 minutes, and dry after centrifugation or suction filtration Get cellulose.
[0032] (2) Preparation of electrospinning solution
[0033] Dissolve the obtained cellulose in 1-ethyl-3-methylimidazolium acetate ionic liquid, stir at room temperature for 12h to prepare 5wt% cellulose spinning solution; dissolve a certain amount of chitosan powder in the same ion In the liquid, stir for 12 hours to ...
Embodiment 2
[0043] The present embodiment provides a kind of preparation method of biomass lithium ion battery negative electrode material:
[0044] (1) Cellulose extraction
[0045] Wash and dry the wood powder at 100°C, crush it and pass through a 60-100 mesh sieve, weigh 10g of wood powder and extract with benzene / absolute ethanol for 12 hours, then suction filter and dry. Add the dried powder to 3% sodium hydroxide solution to react for 3 hours, after cleaning by suction filtration, add glacial acetic acid and 30% hydrogen peroxide to react at 60°C for 4 hours, ultrasonically disperse for 30 minutes, and dry after centrifugation or suction filtration Get cellulose.
[0046] (2) Preparation of electrospinning solution
[0047] Dissolve the obtained cellulose in 1-ethyl-3-methylimidazolium acetate ionic liquid, stir at room temperature for 12h to prepare 5wt% cellulose spinning solution; dissolve a certain amount of chitosan powder in the same ion In the liquid, stir for 12 hours to ...
Embodiment 3
[0057] The present embodiment provides a kind of preparation method of biomass lithium ion battery negative electrode material:
[0058] (1) Cellulose extraction
[0059] Wash and dry the wood powder at 100°C, crush it and pass through a 60-100 mesh sieve, weigh 10g of wood powder and extract with benzene / absolute ethanol for 12 hours, then suction filter and dry. Add the dried powder to 3% sodium hydroxide solution to react for 3 hours, after cleaning by suction filtration, add glacial acetic acid and 30% hydrogen peroxide to react at 60°C for 4 hours, ultrasonically disperse for 30 minutes, and dry after centrifugation or suction filtration Get cellulose.
[0060] (2) Preparation of electrospinning solution
[0061] Dissolve the obtained cellulose in 1-ethyl-3-methylimidazolium acetate ionic liquid, stir at room temperature for 12h to prepare 5wt% cellulose spinning solution; dissolve a certain amount of chitosan powder in the same ion In the liquid, stir for 12 hours to ...
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Abstract
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