Cai Ning, Xia Sunwen, Zhang Xiong, Meng Zihan, Bartocci Pietro, Fantozzi Francesco, Chen Yingquan, Chen Hanping, Williams Paul T, Yang Haiping
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P.R. China.
ChemSusChem. 2020 Mar 9;13(5):938-944. doi: 10.1002/cssc.201903293. Epub 2020 Feb 11.
A novel method for the preparation of iron- and nitrogen-codoped carbon nanotubes (Fe-N-CNTs) is proposed, based on the catalytic pyrolysis of waste plastics. First, carbon nanotubes are produced from pyrolysis of plastic waste over Fe-Al O ; then, Fe-CNTs and melamine are heated together in an inert atmosphere. Different co-pyrolysis temperatures are tested to optimize the electrocatalyst production. A high doping temperature improves the degree of graphite formation and promotes the conversion of nitrogen into a more stable form. Compared with commercial Pt/C, the electrocatalyst obtained from pyrolysis at 850 °C shows remarkable properties, with an onset potential of 0.943 V versus RHE and a half-wave potential of 0.811 V versus RHE, and even better stability and anti-poisoning properties. In addition, zinc-air battery tests are performed, and the optimized catalyst exhibits a high maximum power density.
提出了一种基于废塑料催化热解制备铁氮共掺杂碳纳米管（Fe-N-CNTs）的新方法。首先，通过在Fe-Al₂O₃上热解塑料废料制备碳纳米管；然后，将Fe-CNTs和三聚氰胺在惰性气氛中一起加热。测试了不同的共热解温度以优化电催化剂的制备。较高的掺杂温度提高了石墨化程度，并促进氮转化为更稳定的形式。与商业Pt/C相比，在850℃热解得到的电催化剂表现出显著的性能，相对于可逆氢电极（RHE）的起始电位为0.943 V，半波电位为0.811 V，并且具有更好的稳定性和抗中毒性能。此外，进行了锌空气电池测试，优化后的催化剂表现出较高的最大功率密度。
