Preparation method of negative electrode material of lithium-ion battery loaded with nano-boron on graphene
A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as inability to meet the needs of high-capacity electrodes, achieve good thermal and chemical stability, good conductivity, and negative electrode potential flat effect
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Embodiment 1
[0031] Example 1: Preparation of NaCl-KCl eutectic salt
[0032] Add NaCl (45g) and KCl (55g) into the ball mill jar, ball mill and mix at 700rpm for 1 hour, take it out and put it into a crucible, heat it in air at 700°C for 2 hours, and cool it to 25°C to obtain NaCl-KCl eutectic salt.
Embodiment 2
[0033] Example 2: Preparation of graphene-supported nano-boron precursor
[0034] Take the NaCl-KCl eutectic salt (10g) prepared in Example 1, add glucose monohydrate (0.4g), urea (0.2g), monohydrate monohydrate and Boric acid (0.1g) and NaCl-KCl eutectic salt (10g) were mixed by ball milling at a speed of 700rpm for 2 hours to prepare a precursor of graphene-loaded nano-boron.
Embodiment 3
[0035] Example 3: Preparation of Salt-Containing Graphene Loaded Nano Boron
[0036] Take the NaCl-KCl eutectic salt (20g) prepared in Example 1, add glucose monohydrate (0.4g), urea (0.2g), monohydrate monohydrate into the ball mill tank at a mass ratio of 4:2:1:200 Boric acid (0.1g) and NaCl-KCl eutectic salt (20g), rotating speed 700rpm ball milling and mixing for 2 hours, prepared graphene-loaded precursor of nano-boron;
[0037]The obtained precursor was heated to 110°C for 2 hours in a nitrogen atmosphere, then heated to 440°C for 3 hours, then heated to 1050°C, reduced for 2 hours and then cooled to 25°C to obtain salt-containing graphene-supported nano-boron. The heating rate for three times is 10°C / min.
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