Phosphorus/reduced graphene oxide nanocomposite for high-performance anode of sodium-ion batteries 

Meng Li,1 Su Dou,1, 2 Na Feng,1 Xiong Pu,1* Weiguo Hu1*

1Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China

2School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Adv. Mater. Lett., 2018, 9 (5), pp 331-335

DOI: 10.5185/amlett.2018.1871

Publication Date (Web): May 17, 2018

E-mail: huweiguo@binn.cas.cn

Abstract


The red phosphorus is considered as a promising anode material for sodium-ion batteries (SIBs) due to its high theoretical capacity of 2596 mAh/g. However, red phosphorus suffers from some limitations, such as low electronic conductivity, and huge volume expansion in the process of discharging. Herein, we report a high-performance anode with red phosphorus (rP)/reduced graghene oxide (rGO) nanocomposite via vaporization-condensation method. The resulting nanostructured rP is uniformly distributed on the surfaces of rGO. The obtained rP/rGO anode achieves high reversibility (76.85% initial columbic efficiency), high specific discharge capacity (1582.3 mAh/g at 260 mA/g), stable cycling performances (60.2% capacity retention after 50 cycles), and high rate performances (up to 7800 mA/g current density). These high performances of our nanocomposite materials suggest that the rP/rGO anode is of great potential for future high energy SIBs.

Keywords

Reduced graphene oxide, red phosphorus, sodium ion batteries.

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