科研之友
微信
新浪微博
Facebook
分享链接
摘要
In the present work, nitric and sulfuric acids were used for the chemical conversion of asphalt to activated carbon (AC) powder. An extremely high cation exchange capacity was obtained under the following conditions: no airflow rate injection and ratio of acid/asphalt, 30 wt%. When the pH was ca. 3 (initial pH range of 3 to 10), a stable zero point of charge was observed for the obtained product. The final composites showed the following integrated advantages: the effectiveness of the oxygen reduction reaction (ORR) active sites and the excellence of the electrical conductivity. The final material can be used not only as an effective metal-free electrode material but also as a competitive substitute material for the recently discovered Pt/C catalyst given the remarkable electrochemical activity toward ORR observed under alkaline conditions.
- 出版日期2018-4
- 单位东北林业大学; 黑龙江工程学院
