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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Salt-templated porous carbon-carbon composite electrodes for application in vanadium redox flow batteries
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Salt-templated porous carbon-carbon composite electrodes for application in vanadium redox flow batteries

机译：用于钒氧化还原流电池的盐模板型多孔碳复合电极

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The catalytic graphitization procedure was optimized by impregnating polyacrylonitrile-based felts with iron(III) chloride solution (0.5 wt% Fe) as the catalyst. By this approach, the graphitization temperature of the felts was reduced to 1000 degrees C and below. This allowed retaining higher nitrogen contents in the felts, most probably enhancing their electrocatalytic activity for utilization in redox flow batteries. Moreover, lower process temperatures will reduce the production costs of carbon felt (CF) electrodes in the future. Combining the catalytic graphitization with a salt-templating step, porous carbon-carbon composite electrodes with a 100 times increased surface area (126 m(2) g(-1)) were obtained. The structure, graphitization degree and porosity were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and nitrogen sorption (BET), whereas the electrochemical performance of the composite electrodes for application in all-vanadium redox flow batteries was evaluated by cyclic voltammetry (CV).
机译：通过用氯化铁（III）氯化物溶液（0.5wt％Fe）作为催化剂来优化催化石墨化方法。通过这种方法，毛毡的石墨化温度降低至1000℃和以下。这允许保留毛毡中的更高的氮含量，最可能提高其电催化活性以用于氧化还原流量电池的使用。此外，降低过程温度将来将降低未来碳毡（CF）电极的生产成本。将催化石墨化与盐模板相结合，获得具有100倍的表面积（126μm（2 )g（-1））的多孔碳 - 碳复合电极。使用X射线衍射（XRD），X射线光电子能谱（XPS），扫描电子显微镜（SEM）和氮吸附（BET）的结构，石墨化程度和孔隙率特征在于，扫描电子显微镜（BET），而复合电极的电化学性能通过循环伏安法（CV）评估全钒氧化还原流电池的应用。

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