Fabrication of anode materials for a lithiumion battery with waste semi-coke carbon powder
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摘要:
以固体废弃物兰炭焦末为原料,通过硼(B)掺杂及高温处理制备出改性兰炭粉末材料。 研究 B 掺杂量对其作为锂离子电池负极材料的影响。 结果表明,B 掺杂质量分数为 8%时,经 2 300 °C高温处理,兰炭的电化学性能达到最佳,首次脱锂容量为 361 mAh/ g,在 1 C 电流密度下经 300 次循环后,容量为 314 mAh/ g,表现出较为优良的循环性能。
Abstract:Waste semi-coke powder generated in semi-coke production and transportation was doped with 8 mass% boron by a high temperature treatment at 2 300 °C. Results indicate that the doping overcomes the shortcomings of low coulombic efficiency, short cycle life, and there are no charge and discharge platforms due to a high content (15 mass%) of impurity in the raw materials. The first discharge capacity is 361 mAh/ g at a rate of 0. 1 C and the reversible capacity is 314 mAh/ g after 300 cycles at charge and discharge ratesof 1 C, showing excellent cycling performance.
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Key words:
- Anode materials of lithium battery /
- Graphite /
- Lan carbon /
- Doping /
- Heat treatment
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