General Education Center, National Tainan Junior College of Nursing, Tainan 700, Taiwan.
Department of Chemistry, National Cheng Kung University, Tainan 70101, Taiwan.
Int J Mol Sci. 2021 Dec 21;23(1):39. doi: 10.3390/ijms23010039.
Multiporous carbons (MPCs) are prepared using ZnO as a hard template and biomass pyrolysis oil as the carbon source. It is shown that the surface area, pore volume, and mesopore/micropore ratio of the as-prepared MPCs can be easily controlled by adjusting the ZnO/oil ratio. Sulfur/MPC (S/MPC) composite is prepared by blending sulfur powder with the as-prepared MPCs followed by microwave heating at three different powers (100 W/200 W/300 W) for 60 s. The unique micro/mesostructure characteristics of the resulting porous carbons not only endow the S/MPC composite with sufficient available space for sulfur storage, but also provide favorable and efficient channels for Li-ions/electrons transportation. When applied as the electrode material in a lithium-ion battery (LIB), the S/MPC composite shows a reversible capacity (about 500 mAh g) and a high columbic efficiency (>95%) after 70 cycles. Overall, the method proposed in this study provides a simple and green approach for the rapid production of MPCs and S/MPC composite for high-performance LIBs.
多微孔碳（MPCs）是使用 ZnO 作为硬模板和生物质热解油作为碳源制备的。结果表明，通过调整 ZnO/油的比例，很容易控制所制备的 MPCs 的比表面积、孔体积和中孔/微孔比。通过将硫粉与所制备的 MPCs 混合，然后在三种不同功率（100 W/200 W/300 W）下进行微波加热 60 s，制备了硫/MPC（S/MPC）复合材料。所得多孔碳的独特的微/介孔结构特征不仅为硫的储存提供了足够的可用空间，而且为 Li 离子/电子的传输提供了有利和高效的通道。当作为锂离子电池（LIB）中的电极材料时，S/MPC 复合材料在 70 次循环后表现出约 500 mAh g 的可逆容量和>95%的高库仑效率。总的来说，本研究提出的方法为快速制备 MPCs 和 S/MPC 复合材料提供了一种简单且绿色的方法，适用于高性能 LIBs。
