A method for controlling the morphology of metal oxide/carbon anode materials for lithium-ion batteries
A technology for lithium-ion batteries and carbon anode materials, applied in battery electrodes, negative electrodes, secondary batteries, etc., can solve the problems of regulating MOF precursors, etc., and achieve the effects of convenient operation, good application prospects, and simple processes
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Embodiment 1
[0031] Example 1: Weigh 1.354g of manganese acetate and 2.75g of terephthalic acid, dissolve them in 50ml of dimethylformamide (in DMF), transfer them into a 100ml hydrothermal reactor, and heat and stir at 180°C for 10h. The reacted product was centrifuged, washed twice with absolute ethanol and deionized water, dried in an oven, and ground to obtain a white MOF precursor, which was designated as MOF-Mn(PTA)B 0 . The above white precursor was placed in a tube furnace filled with Ar gas flow, calcined at 600 °C for 2 h, and then naturally cooled to room temperature to obtain MnO-B 0 / C material. figure 1 a Recorded precursor MOF-Mn(PTA)B 0 SEM image, you can see MOF-Mn(PTA)B 0 It is a parallelepiped shape with a size of about 5 μm. figure 2 MnO-B 0 / C's XRD pattern, it can be seen from the figure that the material phase is mainly MnO, and contains a small amount of Mn 3 o 4 Miscellaneous. Table 1 records its BET specific surface area test results, it can be seen that ...
Embodiment 2
[0034] Weigh 1.354g of manganese acetate and 0.674g of benzoic acid and dissolve them in 50ml of DMF. After stirring overnight, add 2.018g of terephthalic acid, transfer to a 100ml hydrothermal reactor, and heat and stir at 180°C for 10h. The reacted product was centrifuged, washed twice with absolute ethanol and deionized water, dried in an oven, and ground to obtain a white MOF precursor, which was designated as MOF-Mn(PTA)B 1 . The above white precursor was placed in a tube furnace, calcined at 600 °C for 2 h in an argon atmosphere, and then cooled naturally to room temperature to obtain MnO-B 1 / C. Precursor MOF-Mn(PTA)B 1 SEM such as figure 1 As shown in b, it can be seen that MOF-Mn(PTA)B 1 It is in the shape of a microsheet, with a length of 3 μm and a width of 0.8 μm. figure 2 MnO-B 1 / C's XRD pattern, it can be seen from the figure that the material phase is mainly MnO, and contains a small amount of Mn 3 o 4 Miscellaneous. See Example 1 for battery assembly...
Embodiment 3
[0036] Weigh 1.354g of manganese acetate and 1.348g of benzoic acid and dissolve in 50ml of DMF. After stirring overnight, add 1.834g of terephthalic acid, transfer to a 100ml hydrothermal reactor, and heat and stir at 180°C for 10h. The reacted product was centrifuged, washed twice with absolute ethanol and deionized water, dried and ground to obtain a white MOF precursor, which was designated as MOF-Mn(PTA)B 2 . The obtained white precursor was placed in a tube furnace filled with Ar gas, calcined at 600 °C for 2 h, and then naturally cooled to room temperature to obtain a MnO / C material which was designated as MnO-B 2 / C. figure 1 c records the precursor MOF-Mn(PTA)B 2 SEM image, you can see MOF-Mn(PTA)B 2 It is in the form of microsheets, with a length of about 3 μm and a width of about 0.9 μm, but the thickness is significantly smaller than that of MOF-Mn(PTA)B 1 . figure 2 MnO-B 2 / C XRD pattern, it can be seen that the material phase is mainly MnO, and contains a...
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