【作者】 刘京； 宋平； 阮明波； 徐维林；

【Author】 Jing Liu;Ping Song;Mingbo Ruan;Weilin Xu;Changchun Institute of Applied Chemistry,Chinese Academy of Science;University of Chinese Academy of Sciences;

【机构】 中国科学院长春应用化学研究所； 中国科学院大学；

【摘要】 本工作中,我们基于廉价的炭黑,NH₄F和FeCl₃等材料制备了一类高性能的氟、铁共掺杂的氧还原电催化剂。我们对掺杂的氟、铁含量进行了最优化探索（图1a,b）,研究发现在NH₄F/C=11、铁含量在0.5wt%时制备的BP-FFe催化剂在碱性0.1M KOH中具有最好的氧还原催化性能,且其氧还原起始电位(E_onset=40 mV)和半波电位(E_1/2=-123 mV)皆超过了的商业Pt/C（图1c）,也超过了我们以前报道的BP-18F催化剂的性能^[1]。由于炭黑的价格低廉且资源丰富,BP-FFe催化剂具有目前较高的性价比。这种高催化性能的催化剂必定会替代Pt或者其他贵金属材料,在碱性电池的中有广泛应用。更多还原

【Abstract】 Here, on the basis of inexpensive carbon blacks（such as Black Pearls 2000（BP））, NH₄F and FeCl₃, we successfully fabricated a family of F, Fe-codoped inexpensive carbon-based electrocatalysts（BP-FFe） for ORR in alkaline medium. By tuning the Fe content and F content（Fig.1a, b）, we found the electrocatalysts synthesized in the initial mass ration of NH₄F/C of 11:1 and Fe content of 0.5 wt% show the best ORR catalytic performance in 0.1M KOH. The optimal electrocatalysts show a higher ORR onset potential（Eonset = 40 mV）and half-wave potential(E_1/2 =-123 mV) than that of commercial Pt/C and our previously reported BP-18 F catalysts（Fig. 1c） ^[5]. These novel non-precious metal electrocatalysts are the most promising alternatives with the best price/performance ratio to Pt for the application in alkaline fuel cells as a result of their superlow cost and superhigh performance.更多还原