Preparation method for flexible positive pole of lithium selenium battery
A battery and flexible technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as the inability to effectively improve the shuttle effect of polyselenide in lithium-selenium batteries, and achieve easy implementation, mass production, and simple preparation methods. , the effect of improving utilization
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[0034] Example 1
[0035] 0.18g of multi-walled carbon nanotubes (10nm in diameter and 200nm in length) and 0.02g of sodium alginate were thoroughly ground in a mortar, followed by adding an appropriate amount of ultrapure water for wet grinding, and then using a spatula to grind the slurry Coated on the fixed diaphragm, vacuum-dried for 12 hours and cut into appropriate size for later use.
[0036] Prepare a mixed solution of 50mL of concentrated nitric acid and 150mL of concentrated sulfuric acid, add 1g of hollow carbon fiber (40nm in diameter and 10μm in length) into the solution, stir magnetically for 5 hours, filter the product and wash with deionized water and ethanol three times respectively to obtain Activated hollow carbon fiber. Take 0.6 g of the prepared activated hollow carbon fiber and 0.4 g of selenium powder, and after sufficient grinding, the sample is heated at 260° C. in isolation of air for 12 hours to obtain a hollow carbon fiber and selenium composite materia...
Example Embodiment
[0045] Example 2
[0046] 0.18g of multi-walled carbon nanotubes (10nm in diameter and 200nm in length) and 0.02g of sodium alginate were thoroughly ground in a mortar, followed by adding an appropriate amount of ultrapure water for wet grinding, and then using a spatula to grind the slurry Coated on the fixed diaphragm, vacuum-dried for 12 hours and cut into appropriate size for later use.
[0047] Prepare a mixed solution of 50mL of concentrated nitric acid and 150mL of concentrated sulfuric acid, add 1g of hollow carbon fiber (40nm in diameter and 10μm in length) into the solution, stir magnetically for 5 hours, filter the product and wash with deionized water and ethanol three times respectively to obtain Activated hollow carbon fiber. Take 0.6 g of the prepared activated hollow carbon fiber and 0.4 g of selenium powder, and after sufficient grinding, the sample is heated at 260° C. in isolation of air for 12 hours to obtain a hollow carbon fiber and selenium composite materia...
Example Embodiment
[0050] Example 3
[0051] 0.18g of multi-walled carbon nanotubes (10nm in diameter and 200nm in length) and 0.02g of sodium alginate were thoroughly ground in a mortar, followed by adding an appropriate amount of ultrapure water for wet grinding, and then using a spatula to grind the slurry Coated on the fixed diaphragm, vacuum-dried for 12 hours and cut into appropriate size for later use.
[0052] Prepare a mixed solution of 50mL of concentrated nitric acid and 150mL of concentrated sulfuric acid, add 1g of hollow carbon fiber (40nm in diameter and 10μm in length) into the solution, stir magnetically for 5 hours, filter the product and wash with deionized water and ethanol three times respectively to obtain Activated hollow carbon fiber. Take 0.5 g of the prepared activated hollow carbon fiber and 0.5 g of selenium powder, and after fully grinding, heat the sample at 260° C. in isolation of air for 12 hours to obtain a hollow carbon fiber and selenium composite material.
[0053]...
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