Abstract
In order to study the fast and efficient method of preparing electrode material ZnMn2O4, in this paper, oxalic acid was selected as the precipitator, oxalic acid dihydrate (C2H2O4•2H2O) as the chemical precipitator, manganese sulfate monohydrate (MnSO4•H2O) as the manganese source and zinc acetate dihydrate (C4H6O4Zn•2H2O) as the zinc source. The precursor was prepared by co-precipitation method. Then, ZnMn2O4 powders with mesoporous structure were obtained at different calcination temperatures. The phase of ZnMn2O4 powders at different calcination temperatures was characterized by XRD analysis. After considering the crystallinity and high temperature agglomeration, samples calcinated at 600oC were selected as the cathode material of the battery, and were characterized by SEM and TEM. The experimental results show that the electrode material ZnMn2O4 prepared by this method has high crystallinity, high preparation efficiency, energy saving, environmental protection and good dispersion.
Highlights
Zinc manganate (ZnMn2O4) has a high theoretical specific capacity (784mAh/g) and large reserves of raw materials and environmental protection, which is one of the best substitutes for traditional graphite negative materials
Figure.2 shows the microstructure of ZnMn2O4 powders calcinated at 600oC by means of field emission scanning electron microscope and transmission electron microscope
ZnMn2O4 powders with mesoporous structure were obtained at different calcination temperatures
Summary
Zinc manganate (ZnMn2O4) has a high theoretical specific capacity (784mAh/g) and large reserves of raw materials and environmental protection, which is one of the best substitutes for traditional graphite negative materials. This material has become a hot spot in the field of battery materials in recent years[1,2]. The preparation conditions and technology are simple and convenient [10,11] This method has low requirements on equipment, short production cycle and is suitable for commercial production It provides a new idea for the preparation of cathode materials for lithium ion batteries and has certain reference value for the research and development of chemical battery technology
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