Carbon nanometer pipe high energy storage battery negative pole material and is preparation method
A carbon nanotube and battery negative electrode technology is applied in the field of carbon nanotube high energy storage battery negative electrode material and its preparation, and achieves the effects of high hydrogen storage performance, superior performance and stable discharge platform
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Embodiment 1
[0024] The pristine carbon nanotubes were soaked in HF solution for 24h, after cleaning, in concentrated H 2 SO 4 : Concentrated HNO 3 (1:1) mixed solution was boiled for 30 minutes to remove particulate impurities such as amorphous carbon, and at the same time, the end caps closed by carbon nanotubes were opened, and then rinsed with deionized water until neutral. CuSO 4 The solution is mixed with multi-walled carbon nanotubes and complexing agent (potassium sodium tartrate tetrahydrate), and the pH of the solution is adjusted, and then the reducing agent formaldehyde solution is titrated into the copper complexing solution to remove Cu 2+ reduction. By changing the CuSO in the solution 4 The concentration of the resulting deposited nano-copper in the whole copper-deposited multi-walled carbon nanotubes is controlled. Controlling the drop rate of reducing agent can effectively control the particle size of copper particles. These functional groups on the surface of carbo...
Embodiment 2
[0027] The experimental conditions are the same as in Example 1, and the copper-modified carbon nanotubes used in Implementation 1 are changed to copper-modified carbon nanotubes with a weight ratio of carbon nanotubes and copper of 1:1, and other substances are mixed in the same proportion to make electrodes The material is tested for electrochemical hydrogen storage, and the measured specific electricity can reach 1200mAh / g.
Embodiment 3
[0029] The experimental conditions were changed as follows, and the rest were the same as in Example 1.
[0030] The complexing agent used in the preparation of carbon nanotubes in Example 1 was changed to sodium thiosulfate.
[0031] The modified carbon nanotubes used to prepare the electrodes are copper-modified carbon nanotubes with a weight ratio of carbon nanotubes and copper of 1:5, and other substances are mixed in the same ratio and the same method to make electrode materials, and the electrochemical hydrogen storage test is carried out. The specific power can reach 1690mAh / g.
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