High-energy-density lithium ion battery integrated electrode and preparation method thereof
A lithium-ion battery, high energy density technology, applied in the direction of battery electrodes, electrode manufacturing, negative electrodes, etc., to achieve the effect of alleviating volume expansion, short time consumption, and simple method and process
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Embodiment 1
[0026] Example 1: A method for preparing an integrated electrode of a high-energy-density lithium-ion battery. Natural walnut wood is selected as wood, which is mechanically cut into a cylinder with a diameter of 60 mm and a thickness of 10 mm. Wash and dry it, and put it into a tube furnace for carbonization at 5°C min -1 Heat up to 700°C for 3 hours, then cool down with the furnace. Put the carbonized wood into an ethanol solution containing 10% tin tetrachloride, add dropwise 5mL of carbon disulfide solution, stir well, and then conduct solvothermal reaction at 160°C for 24 hours. The carbonized wood obtained by the reaction was washed and dried with ethanol and deionized water, and directly used as an electrode of a lithium-ion battery.
[0027] see figure 1 ( figure 1 (a-b), (d-e) SEM and (c), (f) TEM figure) of the tin disulfide composite three-dimensional multi-channel carbon substrate in the embodiment, the black and yellow carbonized wood (tin disulfide composite) ...
Embodiment 2
[0029] Embodiment 2: a kind of preparation method of high energy density lithium ion battery integrated electrode, it comprises:
[0030] 1) Select natural wood, such as mahogany, and mechanically cut the wood into a cylinder with a diameter of 65 mm and a thickness of 12 mm;
[0031] 2) Carry out high-temperature carbonization to the natural wood of the desired shape in step 1), the carbonization temperature is 600 degrees Celsius, and the carbonization time is 12 hours;
[0032] 3) Weighing a tin-containing salt, wherein the salt is selected from tin dichloride, and the tin salt is dissolved in a volatile solvent, and the volatile solvent is selected from water;
[0033] 4) Add the carbonized wood obtained in step 2) to the prepared tin-containing salt solution and add the carbon disulfide solution dropwise, and the amount of the carbon disulfide solution added dropwise is 6 mL;
[0034] 5) The mixed solution obtained in step 4) is fully stirred and then subjected to high t...
Embodiment 3
[0036] Embodiment 3: a kind of preparation method of high energy density lithium ion battery integrated electrode, it comprises:
[0037] 1) Select natural wood, such as oak, and mechanically cut the wood into a cylinder with a diameter of 62 mm and a thickness of 10 mm;
[0038] 2) Carry out high-temperature carbonization of the natural wood with the desired shape in step 1), the carbonization temperature is 1000 degrees Celsius, and the carbonization time is 2 hours;
[0039] 3) Weighing the tin-containing salt, the salt is selected from tin methanesulfonate, and the tin salt is dissolved in a volatile solvent, and the volatile solvent is selected from n-butanol;
[0040] 4) Add the carbonized wood obtained in step 2) to the prepared tin-containing salt solution and add the carbon disulfide solution dropwise, and the amount of the carbon disulfide solution added dropwise is 10 mL;
[0041] 5) The mixed solution obtained in step 4) is fully stirred and treated at high temperat...
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