Controlled growth cerium oxide nanoparticles on reduced graphene oxide for oxygen catalytic reduction

被引：49

作者：

Peng, Weidong ^{[1
]}

Zhao, Longyun ^{[1
]}

Zhang, Cuiling ^{[1
]}

Yan, Yinghan ^{[1
]}

Xian, Yuezhong ^{[1
]}

机构：

[1] E China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Dept Chem, 500 Dongchuan Rd, Shanghai 200241, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Oxygen reduction reaction; Non-precious electrocatalyst; Graphene; Cerium oxide nanoparticles; Thermal treatment; METAL-FREE ELECTROCATALYSTS; SURFACE-CHEMISTRY; CARBON NANOTUBES; PERFORMANCE; NITROGEN; VACANCY; NANOCRYSTALS; OXIDATION; COMPOSITE; PROGRESS;

D O I：

10.1016/j.electacta.2016.01.129

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper, a facile and simple strategy was developed for in-situ growth cerium oxide nanoparticles on reduced graphene oxide (rGO) through thermal treatment of the Ce3+-doped graphene oxide(GO) under nitrogen atmosphere. Through regulation the thermal treatment temperature, the growth of cerium oxide nanocrystals can be easily controlled in accompany with the reduction of GO. The morphology and chemical composition of the as-synthesized CeO2/rGO at different temperature are characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. The nanocomposites show electrocatalytic activity toward the oxygen reduction reaction (ORR) in alkaline solution. Especially, the cerium oxide nanoparticles/rGO nanocomposites treated at 750 degrees C possess excellent electrocatalytic ability with a dominating four-electron pathway, high tolerance of methanol and long-term operation stability due to the well exfoliation of graphene and perfect crystalline structure of cerium oxide. Compared to the commercial Pt/C catalyst, the synergistic effect of the fast electron transport of rGO and the high electrocatalytic activity of cerium oxide nanocrystals makes the nanocomposites as advanced, non-precious electrocatalysts for ORR. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：669 / 676

页数：8

共 60 条

[1] Nanostructured materials for advanced energy conversion and storage devices [J].