生物质桦木屑柱状多孔碳自组装纳米硅复合负极材料

本文采用KOH碱活化刻蚀方法构建三维柱状结构的桦木屑衍生多孔碳材料用于负载高容量纳米硅（SiNP）颗粒，以缓解半导体硅材料本身导电性差及体积膨胀大的问题。所制备的硅碳负极电池材料具有稳定循环性能和优异的倍率性能，通过电化学测量结果显示，在0.5A/g的恒电流密度下桦木屑衍生柱状多孔碳材料负载高容量（20%）纳米硅粒子的复合材料具有较高的贮锂性能:初始放电容量为1099.98mAh/g, 经过200次循环后比容量仍然稳定在1089.77mAh/g。这项工作为负载高容量电极的核孔结构提供了一条有前景的新思路。

Biomass-birch sawdust columnar porous carbon self-assembled nano-silicon composite anode material

In order to improve the low electrical conductivity of semiconductor silicon materials and alleviate the volume expansion, a three-dimensional columnar birch sawdust derived porous carbon material was constructed by KOH alkali activation etching method.The electrochemical measurement results showed that the pet wood derived columnar porous carbon composite loaded with silicon nanoparticles (20%) had a high lithium storage performance at the constant current density of 0.5A/g. The initial discharge capacity of this material was 1099.98mA/h, and the stable discharge capacity after 200 cycles was 1089.77mAh/g. This work provides a promising new idea for nuclear pore structure loaded silicon with high capacity at lithium-ion batteries.