研究目的
Investigating the effects of laser annealing on the preparation and electrochemical performance of spinel-structured LiMn2O4 for lithium-ion batteries.
研究成果
Laser annealing improves the cycle performance of LiMn2O4, with the effect dependent on laser power and lithium excess. However, initial capacity decreases, and the optimal conditions balance these factors.
研究不足
The study notes that the initial capacity of laser-annealed LiMn2O4 is less than untreated samples, and the effect of lithium excess on performance varies with laser power.
1：Experimental Design and Method Selection:
The study used laser annealing to prepare LiMn2O4 powder, with variations in laser power and lithium excess.
2：Sample Selection and Data Sources:
Four different kinds of LiMn2O4 samples were prepared with varying lithium excess percentages.
3：List of Experimental Equipment and Materials:
A diode laser with varying power, Rigaku X-ray diffractometer, scanning electron microscope, and electrochemical testing equipment were used.
4：Experimental Procedures and Operational Workflow:
Samples were prepared by solid-state reaction, annealed with laser at different powers, and characterized for structure and electrochemical performance.
5：Data Analysis Methods:
XRD and SEM were used for structural analysis, and electrochemical tests evaluated performance.
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