Flower-shaped manganese oxide microsphere material and preparation method and application thereof
A technology of manganese oxide microspheres and manganese oxide nanometers, which is applied in the field of flower-shaped manganese oxide microsphere materials and its preparation, can solve the problems of low performance and complexity of lithium-ion batteries, and achieve excellent cycle stability and reliability. The effect of high controllability and high discharge specific capacity
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Embodiment 1
[0027] The flower-like manganese oxide microsphere material is prepared through the following steps:
[0028] 1) The Mn-Al alloy is prepared by the dealloying method with a flower-like micro-nano structure of Na 0.55 mn 2 o 4 Precursor;
[0029] 2) the Na obtained in step 1) 0.55 mn 2 o 4 The precursor is heated to 500°C at a rate of 1°C / min in air, kept for 2 hours, and then naturally cooled to room temperature;
[0030] 3) the material after step 2) is treated in the Ar / H containing hydrogen volume content of 7% 2 Raise the temperature to 350°C at a rate of 1°C / min in the gas, keep it warm for 5 hours, and then cool it down to room temperature naturally to obtain the flower-shaped manganous oxide microsphere material;
[0031] Carry out X-ray diffraction (XRD) analysis to the flower-shaped manganous oxide microsphere material prepared in this embodiment, analyze the inorganic chemical composition of this micro-nano structure material, the result is as follows figure ...
Embodiment 2
[0035] The flower-like manganese oxide microsphere material is prepared through the following steps:
[0036] 1) The Mn-Al alloy is prepared by the dealloying method with a flower-like micro-nano structure of Na 0.55 mn 2 o 4 Precursor;
[0037] 2) the Na obtained in step 1) 0.55 mn 2 o 4 The precursor is heated to 500°C at a rate of 5°C / min in the air, kept for 5 hours, and then naturally cooled to room temperature;
[0038] 3) the material after step 2) is treated in the Ar / H containing hydrogen volume content of 7% 2 Raise the temperature to 350°C at a rate of 5°C / min in the gas, keep it warm for 5 hours, and then cool down to room temperature naturally to obtain the flower-shaped manganous oxide microsphere material.
[0039] Carry out X-ray diffraction (XRD) analysis to the flower-shaped manganous oxide microsphere material prepared in this embodiment, analyze the inorganic chemical composition of this micro-nano structure material, the result is as follows figure...
Embodiment 3
[0042] On the basis of embodiment 1, the difference is:
[0043] In step 2), heat up to 500°C at a rate of 10°C / min in air and keep warm for 5h;
[0044]Step 3) in, in the Ar / H that contains hydrogen gas volume content to be 5% 2 In the gas, the temperature was raised to 350°C at a rate of 10°C / min and kept for 5 hours.
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Abstract
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