Improved Electrochemical Performance of Li-ion Battery-Based Li₄Ti₅O₁₂/X (X = Si, V₂O₅) Composite Anodes
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更新:2026-09-16 21:31:02 浏览:0次
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摘要
Lithium titanate (Li₄Ti₅O₁₂) materials possess a range of exceptional properties, making them highly suitable for use in lithium-ion battery (LIB) applications. This study explores the synthesis of Li₄Ti₅O₁₂-based nanocomposites utilizing a hydrothermal method. The structural and morphological features of Li₄Ti₅O₁₂, Li₄Ti₅O₁₂/Si, and Li₄Ti₅O₁₂/V₂O₅ nanocomposites were investigated through various techniques, including X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and X-ray photoelectron spectroscopy (XPS). The findings confirm the successful fabrication of nanoscale Li₄Ti₅O₁₂-based composites.
The electrochemical performance of the synthesized nanomaterials, utilized as active anode materials in LIBs, was evaluated using galvanostatic testing in lithium half-cells. Among the composites, the Li₄Ti₅O₁₂/V₂O₅ exhibited an initial reversible discharge capacity of 630.8 mAh g⁻¹ at a rate of 0.1C. However, this value dropped significantly to 24.5 mAh g⁻¹ after 100 cycles. On the other hand, the Li₄Ti₅O₁₂/Si composite displayed an initial discharge capacity of 517.5 mAh g⁻¹, which decreased to 189.5 mAh g⁻¹ after 100 cycles. These results emphasize the variations in cycling stability and electrochemical performance between the two types of nanocomposites, offering crucial insights into their potential roles in advanced energy storage technologies.
关键词
anode materials, Li-ion battery
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