石墨烯
氧化物
材料科学
甲醇
纳米复合材料
电解质
酞菁
化学工程
碳纤维
氧气
催化作用
电催化剂
化学
电化学
无机化学
电极
纳米技术
复合数
有机化学
物理化学
工程类
复合材料
作者
Kenichiro Irisa,Kazuto Hatakeyama,Soichiro Yoshimoto,Michio Koinuma,Shintaro Ida
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2021-01-01
卷期号:11 (26): 15927-15932
被引量:10
摘要
Electrocatalysts with metal-nitrogen-carbon (M-N-C) sites have recently attracted much attention as potential catalysts for the oxygen reduction reaction (ORR), and a hybrid of iron phthalocyanine (FePc) and reduced graphene oxide (rGO) is one of the promising candidates. Herein, a FePc/GO nanocomposite was synthesized by electrostatic deposition on the electrode. The electrochemically reduced FePc/GO nanocomposite (ER(FePc/GO)) contained Fe2+ centers in well reduced graphene sites without agglomeration. The ER(FePc/GO) exhibited high ORR activity with an ORR onset (Eonset) and half-wave potential (E1/2) of 0.97 and 0.86 V, respectively. Furthermore, the ORR activity successfully improved by adding an electrolyte such as KCl or KNO3. The small H2O2 yield of 2%, superior tolerance to methanol addition and high-durability indicate that the ER(FePc/GO) is a promising electrocatalyst. Theoretical studies, indicating that the presence of Cl- and NO3- ions lowered the conversion energy barrier, strongly supported the experimental results.
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