Jo, A. Hae Kim, So Yeun Kim, Ji Hoon Kim, Yoong Ahm Yang, Cheol-Min 2024-01-19T10:03:36Z 2024-01-19T10:03:36Z 2023-03-23 2023-02 0363-907X https://pubs.kist.re.kr/handle/201004/114005 Carbon-coated Si/carbon nanotube/graphene oxide (C-Si/CNT/GO) microspheres with a robust core-shell composite structure were successfully fabricated by efficient and scalable spray-drying and chemical vapor deposition (CVD) for application as a lithium-ion battery (LIB) anode. The amphiphilic GO nanoparticles facilitated the uniform dispersion of Si nanoparticles by suppressing the CNT aggregation in the Si/CNT/GO microspheres, efficiently forming a robust Si/CNT/GO microsphere composite structure. The surface of the Si/CNT/GO microsphere composite was coated with carbon using CH4 via CVD to enhance its cycling performance. The four building block components, namely, Si nanoparticles, CNTs, and GO nanoparticles as the core and the carbon-coating layers as the shell, provided high electrochemical capacity, excellent electrical conductivity, efficient buffer space for the volume expansion of the Si nanoparticles, and high structural stability during lithiation/delithiation. The C-Si/CNT/GO composite anode also exhibited excellent electrochemical performance with high specific capacity (2921 mAh g(-1) at 100 mA g(-1)), long cycle life (1542 mAh g(-1) at 200 mA g(-1) after 100 cycles), and high charge/discharge rate (1506 mAh g(-1) at 6 A g(-1)). This approach for fabricating core-shell structured Si-based composite anodes with excellent electrochemical performance will provide a significant breakthrough for developing next-generation LIBs. English John Wiley & Sons Inc. Robust Core-Shell Carbon-Coated Silicon-Based Composite Anode with Electrically Interconnected Spherical Framework for Lithium-Ion Battery Article 10.1155/2023/6874429 1 International Journal of Energy Research, v.2023 International Journal of Energy Research 2023 Y scie scopus 000936138100013 Energy & Fuels Nuclear Science & Technology Energy & Fuels Nuclear Science & Technology Article GRAPHENE PERFORMANCE SI NANOPARTICLES ELECTRODE SYSTEMS