生物质碳在直接碳固体氧化物燃料电池中的应用

研究活性炭和碳化的梧桐叶、橘子皮为直接碳燃料电池燃料时的物化性能和电化学性能.通过X射线衍射研究燃料中碳的形态结构，采用能谱及拉曼研究燃料中元素质量分数.BET测试燃料的比表面积及孔结构.结果表明，碳化的橘子皮燃料中含有钾元素和较高的无定形碳质量分数，有利于碳的Boudouard反应和电化学反应.碳化橘子皮燃料比表面积为74 m2·g-1，且具有较小的孔隙率和较大的堆积密度，与阳极的接触界面较大，作为燃料时，800℃燃料电池最大功率密度可达572.6 mW·cm-2.即非木质、水质量分数大的橘子皮经过高温碳化后得到的生物质碳，作为直接碳燃料燃料电池燃料时，具有优异的性能. 

Application of Biomass Carbon in Direct Carbon Solid Oxide Fuel Cell

In order to take activated carbon,carbonized paulownia leaves and orange peel as the fuel of direct carbon fuel cell,their physicochemical and electrochemical properties were investigated.The carbon type in fuel was characterized by X-ray diffraction method.And the energy dispersive spectrometer and Raman patterns were used to analyze the element content of fuel.The specific surface area and pore structure of the fuels were tested by BET.The results show that carbonized orange peel fuel contains potassium and high content of amorphous carbon,which is beneficial to the Boudouard reaction and electrochemical reaction of carbon.The carbonized orange peel possesses a specific surface area of 74 m2· g-1,a small porosity and a large bulk density,which indicate the large contact interface between the anode and fuel.When the carbonized orange peel is used as a fuel,the maximum power density of a fuel cell can reach up to 572.6 m W· cm-2 at 800 ℃.Obtaining from carbonization of non-woody orange peels with high water content,the biomass carbon can provide excellent performance for the fuel of direct carbon fuel cell.