Carbon coated Si core-shell structures have been proposed to solve the adverse effects of Si-based anode.However,designing ideal core-shell architecture with excellent surface and interface properties is still a significant challenge.Herein,a novel peanut-like structure of B-doped silicon/carbon nanoparticle(Si@B-C)synthe-sized by sol-gel process and subsequent thermal reduction is reported.The peanut-like Si@B-C electrode demon-strates a superior cyclability of 534 mAh·g-1 after 1000 cycles at high current density of 1000 mA·g-1.The exceptional electrochemical performance is attributed to the boric acid-induced highly interconnected peanut-like structure and boron heteroatom framework could provide a continuous electron pathway to reduce the irreversible lithium ion loss during rapid cycling.This work provides insight into the development of the heteroatom-doped Si-based anodes with stable cycling performance for LIBs.

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China

[1]Fang-Zhou Zhang;Yuan-Yuan Ma;Miao-Miao Jiang;Wei Luo;Jian-Ping Yang-.Boron heteroatom-doped silicon-carbon peanut-like composites enables long life lithium-ion batteries)[J].稀有金属（英文版）,2022(04):1276-1283

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