Performance and Byproduct Analysis of Coal Gas Solid Oxide Fuel Cell
Performance and Byproduct Analysis of Coal Gas Solid Oxide Fuel Cell
复制标题
煤气固体氧化物燃料电池性能及副产物分析
DOI：
10.1021/ef9009636
复制
发表时间：
2010
期刊：
影响因子：
5.3
通讯作者：
S. Chuang
中科院分区：
文献类型：
--
作者：
Rahul Singh;F. Guzman;Rajesh A. Khatri;S. Chuang
以俄亥俄州5号煤为原料，在700、800、900和950 °C的流动氩气中进行热解，并将热解产物输送到950 °C的Cu（铜）阳极固体氧化物燃料电池（SOFC）中，研究了煤气的直接电化学氧化。煤在700 °C下的热解产生含有89%H2、4%CO、6%CH4、1%CO2和硫化合物（即，1%COS和1%SO2），其在0.5V下产生320 mA/cm 2的最大电流密度。将热解温度从700 ℃升高到950 ℃增加了煤气中的CO浓度（即，42体积% CO），这又降低了燃料电池的最大电流密度。在高于700 °C的温度下生产的煤气中不存在硫化合物。煤气燃料操作没有降低燃料电池的性能。在0.5V电压下，含25vol%CH4的氦气燃料产生的电流密度为340 mA/cm ~ 2。这些结果表明，铜阳极是有效的电化学氧化含硫燃料。
The direct electrochemical oxidation of coal gas was studied by pyrolyzing a sample of Ohio #5 coal in flowing Ar at 700, 800, 900, and 950 °C and transporting the resulting gaseous products to a Cu (Copper) anode solid oxide fuel cell (SOFC) operated at 950 °C. Pyrolysis of coal at 700 °C produced a H2-rich coal gas containing 89% H2, 4% CO, 6% CH4, 1% CO2, and sulfur compounds (i.e., 1% COS and 1% SO2), which yielded a maximum current density of 320 mA/cm2 at 0.5 V. Raising the pyrolysis temperature from 700 to 950 °C increased the CO concentration in the coal gas (i.e., 42 vol % CO), which in turn reduced the fuel cell maximum current density. No sulfur compounds were present in the coal gas produced at temperatures higher than 700 °C. Coal gas fuel operation did not degrade the fuel cell performance. A fuel composition of 25 vol % CH4 in He generated a current density of 340 mA/cm2 at 0.5 V. These results demonstrated that the Cu anode is effective for the electrochemical oxidation of sulfur-containin...