Journal
IONICS
Volume 27, Issue 6, Pages 2431-2444Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04027-8
Keywords
Fe2O3; SiC nanowires; Arc plasma; Anode; Lithium-ion battery
Funding
- National Natural Science Foundation of China [U1908220]
- Research Project of Shanxi Datong University, People's Republic of China
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1D Fe2O3@SiC nanowires were successfully synthesized, featuring excellent mechanical flexibility and conductivity, leading to improved electrochemical performance for lithium-ion batteries.
In this paper, 1D Fe2O3@SiC nanowires (NWs) were successfully synthesized by the high-temperature arc plasma with a subsequent oxidation process. Fe2O3 was encapsulated at the tip of SiC NWs, which features the advantages such as no side reactions, excellent mechanical flexibility, and good conductivity. This 1D structure can effectively accommodate volume expansion and inhibit mechanical degradation, while the conductive network greatly expands the electrode-electrolyte contact area, greatly promoting the conduction of electrons and the diffusion of Li+ ions, which leads to a remarkable improvement of the electrochemical performance. Benefiting from these structural advantages, the Fe2O3@SiC NW electrode delivers a reversible capacity of 656 mAh g(-1) at 0.2 A g(-1) after 100 cycles, and even up to 567 mAh g(-1) at a high current density of 3 A g(-1) after 500 cycles. This work offers an attractive strategy for the construction of the Fe2O3@SiC NW electrodes, which have great potential to meet the high-performance requirements for LIBs.
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