Boron heteroatom-doped silicon–carbon peanut-like composites enables long life lithium-ion batteries

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...

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Bibliographic Details
Published in:Rare metals 2022-04, Vol.41 (4), p.1276-1283
Main Authors: Zhang, Fang-Zhou, Ma, Yuan-Yuan, Jiang, Miao-Miao, Luo, Wei, Yang, Jian-Ping
Format: Article
Language:English
Subjects:
Anode effect
Biomaterials
Boron
Carbon
Chemistry and Materials Science
Core-shell structure
Cycles
Electrochemical analysis
Energy
Interfacial properties
Lithium
Lithium-ion batteries
Materials Engineering
Materials Science
Metallic Materials
Nanoparticles
Nanoscale Science and Technology
Original Article
Peanuts
Physical Chemistry
Rechargeable batteries
Silicon
Sol-gel processes
Thermal reduction
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Summary: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) synthesized by sol–gel process and subsequent thermal reduction is reported. The peanut-like Si@B-C electrode demonstrates 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.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-021-01741-0