球形富氮炭材料的制备及其电化学性能

The preparation of spherical nitrogen-enriched carbon material and its electrochemical performance

以吡咯为单体、FeCl3为氧化剂,通过低温水热法制备出球形聚吡咯(PPy),然后将PPy在N2保护下直接炭化获得球形富氮炭材料(SC).借助X射线衍射(XRD)、扫描电镜(SEM)、红外光谱(FT-IR)、元素分析及N2吸附-脱附对产物进行了表征.电化学测试结果显示,SC电极在6.0mol/L KOH的电解液中、-0.9～0.1V的电势范围内具有良好的电容行为,比电容高达235F/g.

A spherical polypyrrole was synthesized using as pyrrole monomer and FeCl3 as oxidant via a low temperature hydrothermal method,and then the polypyrrole was directly carbonized to prepare a spherical nitrogen-enriched carbon material （SC） at the atmosphere of N2. The samples were characterized by X-ray （XRD）,scan electron microscopy （SEM）,FT-IR spectrometer （FT-IR）,element analysis and N2 adsorption-desorption. The electrochemical measurement revealed the SC electrode exhibited good capacitance behavior in 6.0 mol/L KOH aqueous electrolyte from -0.9 to 0.1 V,and its specific capacitance reached as high as 235 F/g.