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Compact-structured silicon/carbon composites consisting of silicon, graphite, and coal tar pitch pyrolysis carbon are prepared via two heating procedures after liquid solidification. The first heating procedure plays a key role in the formation of compact-structured silicon/carbon composites, in which the coal tar pitch has a good fluidity at 180 °C above the softening temperature, and it is easy...
To improve the electrochemical performance of silicon-based anode, silicon/carbon (Si/C) material was synthesized via dopamine polymerization process and subsequent pyrolysis. The carbonized polydopamine (PDA-C) is N-doped, which improves the electronic conductivity of material and helps lithium ion transmission. The existence of polydopamine-derived carbon is evidenced by X-ray photoelectron spectroscopy...
Using LA132 binder as carbon source, silicon/graphite/carbon (Si/G/L-C) anode material is successfully synthesized via liquid solidification and subsequent pyrolysis. The results show that Si/G/L-C composite presents an initial charge capacity of 909.8mAhg−1 with first coulombic efficiency of 76.8% and good electrochemical performance. The results of X-ray diffraction, X-ray photoelectron spectroscopy,...
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