直接碳燃料电池活性炭制备的实验研究

以KOH为活化剂,采用化学活化法对橡木锯屑制取活性炭进行了实验研究。考察了活化温度、碱炭比和活化时间对活性炭比表面积的影响,得到了制取活性炭的最优工况,随后对此工况下的活性炭先后使用HNO3浸渍和乙酸镍Ni负载。结果表明,最优工况下制备的活性炭比表面积为1967m2/g。HNO3浸渍可以增加活性炭表面含氧官能团的种类和含量,也能较大程度地降低活性炭的灰分,乙酸镍Ni负载后,活性炭体积电阻率降低了很多。

Experimental Study of Active Carbon Preparation for Direct Carbon Fuel Cells

With KOH serving as an activation agent, experimentally studied was the active carbon prepared from oak wood sawdust by adopting a chemical activation method. The influence of the activation temperature, alkali/carbon ratio and activation time on the specific surface area of the active carbon was investigated. On this basis, the optimum operating condition for active carbon preparation was obtained. Subsequently, HNO3 soaking and nickel acetate loading were used successively to the active carbon under the a...