期刊
MATERIALS TECHNOLOGY
卷 33, 期 11, 页码 748-753出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2018.1500131
关键词
Phosphorus-doped; phytic acid; hollow carbon materials; sodium-ion batteries
Sustainable biomass-derived carbonaceous material plays an intriguing and promising role in the development of sodium ion batteries (SIBs) electrodes. Herein, we report a low-cost anode material of phosphorus-doped hollow carbon sphere derived from phytic acid (P-HCS). Being tested as the anode in SIB, it shows high capacity, outstanding cycle life, and excellent cycling stability. The P-HCS electrode delivers an initial charge capacity of 278 mAh g(-)1 at a current density of 20 mA g(-1), and 234 mAh g(-1) at a current density of 100 mA g(-1) after 300 cycles. Moreover, compared with hollow carbon sphere (HCS), the P-HCS exhibited much superior rate capability, with a good capacity retention of 90% at a current density of 500 mA g(-1) after 150 cycles.
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