Preparation method of multilevel porous structure manganous-manganic oxide/carbon nanosheet negative electrode material for lithium-ion battery
A technology of trimanganese tetraoxide and lithium-ion batteries, which is applied in the field of electrochemistry, can solve the problems of reducing the porosity of composite materials, uncontrollable reaction process, poor repeatability, etc., and achieves inhibition of dissolution loss, excellent high-rate discharge performance, and increased conductivity sexual effect
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[0028] The preparation method of multi-stage porous structure manganese tetroxide / carbon nano-sheet lithium ion battery anode material, the steps are as follows:
[0029] Add 6mmol of Mn(CH 3 COO) 2 ·4H 2 O and 150ml of ethylene glycol reagent are put into the reaction kettle, after vigorous stirring, make Mn(CH 3 COO) 2 ·4H 2 O completely dissolved. Then the obtained solution was transferred to a reflux device and refluxed at 170°C for 2 hours. After natural cooling, a white manganese-based complex precursor was obtained, and the product was washed, centrifuged, and vacuum dried. Put the obtained manganese-based complex into a tube furnace filled with nitrogen or argon, and thermally decompose it at 400-600℃ for 0.5-6h at a heating rate of 2-10℃ / min to obtain nano-sheet porous Mn 3 O 4 / C Composite anode material.
[0030] figure 1 with figure 2 These are the scanning electron microscopy and transmission electron microscopy images of the manganese-ethylene glyc...
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