In situ growth of β-FeOOH on hierarchically porous carbon as anodes for high-performance lithium-ion batteries
RIS ID
128736
Abstract
Sugarcane bagasse, a waste product of the sugarcane industry can be used as a precursor for the preparation of carbon. In this study, a composite consisting of hierarchically functionalized porous carbon (FPC) and β-FeOOH was synthesized via a simple and effective hydrolysis method. The hydrothermal process before the carbonization and activation of the bagasse maintained the hierarchical interconnected porous structure of the sugarcane bagasse. A nitric acid (HNO3) functionalization treatment enabled an in-situ growth of β-FeOOH on the hierarchically structured bagasse. When tested as an anode for lithium-ion batteries, the obtained FPC/β-FeOOH composite showed a high discharge capacity of 898.8 mAh g−1 at 0.2 A g−1 after 350 cycles and achieved a specific capacity of 446.1 mAh g−1 at a current rate of 1 A g−1 after 1000 cycles together with a remarkable coulombic efficiency of 99.9%. This excellent electrochemical performance of the FPC/β-FeOOH composite can be attributed to the synergistic effect of the interconnected porous structure of porous carbon and the electrochemically active tunnel type β-FeOOH nanorods. The strategy developed here is promising in design and fabrication of other composites having interconnected porous structures with high performance.
Publication Details
Imtiaz, M., Chen, Z., Zhu, C., Pan, H., Zada, I., Li, Y., Bokhari, S. W., Luan, R., Nigar, S. & Zhu, S. (2018). In situ growth of β-FeOOH on hierarchically porous carbon as anodes for high-performance lithium-ion batteries. Electrochimica Acta, 283 401-409.