Carbon coating has been an effective procedure to tackle the severe structural degradation and poor conductivity during cycling of silicon-based anodes in lithium-ion batteries (LIBs). However, the traditional coated carbon usually is tight and thus limit the fast-charging rate and high specific capacity. Herein, through in-situ formation of metal-organic frameworks on the surface, silicon particles were firstly coated by an inside carbon layer. Followed by a solvothermal reaction with the mixture of sucrose and graphene oxide, the second carbon layer outside the silicon particles was deposited, and simultaneously a highly conductive graphene network was formed. After a high temperature pyrolysis process, a graphene matrix supported silicon material with inward multi-channel carbon and outward tight activated carbon was prepared. This unique core/double-layer carbon structure, combined with the highly conductive graphene frameworks, render the material to demonstrate excellent electrochemical performance as anode materials for LIBs in terms of both lithium storage capacity and cycling stability. Thus, the electrode materials deliver a high specific capacity of 1528.1 mA h g⁻¹ at the current density of 0.1 A g⁻¹ and rate capacity retention of 45.5% at 1 A g⁻¹ to 0.1 A g⁻¹. Simultaneously, a highly stable reversible capacity of 1182 mAh g⁻¹ with 89.5% retention over 240 cycles at a current density of 0.2 A g⁻¹ and 484 mAh g⁻¹ with 76.8% retention after 450 cycles at 1.0 A g⁻¹ were obtained. This work can offer an alternative approach for high-energy and low-cost silicon-based anodes for LIBs.

碳涂层一直是解决锂离子电池（LIB）中硅基负极循环过程中严重的结构退化和导电性差的有效方法。然而，传统的涂层碳通常是紧密的，因此限制了快速充电率和高比容量。在此，通过在表面原位形成金属有机骨架，硅颗粒首先被内部碳层覆盖。随后与蔗糖和氧化石墨烯的混合物发生溶剂热反应，沉积了硅颗粒外的第二层碳层，同时形成了高导电性的石墨烯网络。经过高温热解工艺，制备了向内多通道碳和向外致密活性炭的石墨烯基体负载硅材料。这种独特的核心/双层碳结构与高导电性石墨烯框架相结合，使该材料在锂存储容量和循环稳定性方面作为锂离子电池负极材料表现出优异的电化学性能。因此，电极材料具有 1528.1 mAh g 的高比容量^-1在 0.1 A g ^-1的电流密度和 45.5% 的倍率容量保持率在 1 A g ^-1至 0.1 A g ^-1。同时，高度稳定的可逆容量为 1182 mAh g ^{-1 ，在 0.2 A g -1}的电流密度下在 240 次循环后保持 89.5%，在 1.0 A g ^-1的电流密度下，在 450 次循环后保持 76.8% 的484 mAh g ^-1是获得。这项工作可以为LIBs的高能和低成本硅基阳极提供一种替代方法。