Optimizing the micropore-to-mesopore ratio of carbon-fiber-cloth creates record-high specific capacitance

• 作者: Ting Deng Wei Zhang Weitao Zheng Ying Zheng
• 来源期刊: 能源化学
• 年，卷（期）: 2020,（8）
• 页码范围: 210-216
• 页数: 7页
• 语种: 英文

摘要

The application of commercial carbon fiber cloth (CFC) in energy storage equipment is limited by its low specific capacitance and energy density.By a simple one-step activation treatment,the specific surface area of CFCs with porous structure can be increased considerably from 3.9 up to 875 m2/g and the electrochemical properties of CFCs can be improved by three orders of magnitude (1324 mF/cm2).Moreover,the hydrophobicity of CFCs can be transformed into superhydrophilicity.However,the electrochemical performance of CFCs does not show a positive correlation with specific surface area but have a strong relationship with the hierarchical pore distribution forged by the annealing treatment.Only moderate micropore and mesoporous ratio enables optimizing the electrochemical performance of CFCs.