An innovative and simple synthesis strategy of silicon nanoparticle (Si NP) core covered by mesoporous shell carbon (MSC) structure is demonstrated. The Si [email protected] (SCMSC) composite is developed for addressing the issues for Si anode material in lithium ion batteries (LIBs) such as high volume expansion and low electrical conductivity. Significant improvement in the electrochemical performance for the SCMSC anode is observed compared with bare Si anode. The SCMSC composite delivers an initial specific capacity of 2450 mAh g⁻¹ at 0.166 A g⁻¹ with Coulombic efficiency of 99.2% for 100 cycles. Compared to bare Si anode, the SCMSC anode exhibits much higher Li storage capacity, superior cyclability, and good rate capability, highlighting the advantages of hierarchical MSC in the SCMSC structure.

介孔壳碳（MSC）结构覆盖的硅纳米粒子（Si NP）核心的创新和简单的合成策略进行了演示。Si [电子邮件保护]（SCMSC）复合材料的开发旨在解决锂离子电池（LIB）中Si阳极材料的问题，例如高体积膨胀和低电导率。与裸Si阳极相比，观察到SCMSC阳极的电化学性能有显着改善。所述SCMSC复合提供的2450毫安g的初始比容量^-1在0.166 A G ^-1 100次循环的库仑效率为99.2％。与裸露的硅阳极相比，SCMSC阳极具有更高的锂存储容量，优异的循环性和良好的倍率性能，突出了分层MSC在SCMSC结构中的优势。