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Tannic acid-derived carbon-coated Bi nanodiscs for high-performance sodium-ion batteries
Xiangyu Zhang1, Manyi Zheng1, Chunzheng Wu1
1College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, 311300 Zhejiang, China.
Abstract:
A simple route was applied to obtain Bi nanodiscs embedded into tannic acid (TA) derived carbon (Bi@TAC) by calcining Bi2O3@TA precursors. As a result, the Bi@TAC electrode showed an impressive rate capability (a current density ranging from 0.2 to 10 A g-1 with 95% capacity retention) and a long-term cycling performance (414.8 mA h g-1 after 10 000 cycles at 5 A g-1).

