Hierarchical porous carbons fabricated from silica via flame synthesis as anode materials for high-performance lithium-ion batteries

作者：Ou, Junke; Zhang, Yongzhi; Chen, Li; Guo, Yong^*; Xiao, Dan

来源：Ionics, 2015, 21(7): 1881-1891.

DOI：10.1007/s11581-014-1348-0

• Flame approach
• Hierarchical porous carbon materials
• Cooperation
• Reversible capacities

A convenient and cost-effective flame approach to produce a silica template with a unique structure was proposed. The hierarchical porous carbon materials (PCMs) fabricated employing presently prepared silica provide a high specific surface area for the diffusion of Li ions and transportation of electrons. Analysis of nitrogen absorption-desorption and pore size distribution (PSD) shows that PCMs possess plenty of micropores, mesopores, and macropores. Benefiting from the cooperation of various-sized pores, the PCMs-700 as anode material for lithium-ion batteries (LIBs) exhibits outstanding reversible capacities of 1332 mAh g(-1) at current density of 37.2 mA g(-1) (0.1 C) and 834 mAh g(-1) at 372 mA g(-1) (1 C). And when the current density is increased to 3.72 A g(-1) (10 C), it could still retain reversible capacity of 430 mAh g(-1). This result suggests that the hierarchical porous carbon material would be a promising anode material in the LIBs.

• 出版日期2015-7
• 单位四川大学