Simple hydrothermal synthesis of mesoporous spinel NiCo2O4 nanoparticles and their catalytic behavior in CH3OH electro-oxidation and H2O2 electro-reduction

被引:109
作者
Ding, Rui [1 ,2 ,3 ]
Qi, Li [1 ]
Jia, Mingjun [3 ]
Wang, Hongyu [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
[3] Jilin Univ, State Key Lab Theoret & Computat Chem, Coll Chem, Changchun 130023, Peoples R China
关键词
WALLED CARBON NANOTUBES; BOROHYDRIDE FUEL-CELL; HYDROGEN-PEROXIDE; METHANOL ELECTROOXIDATION; NICKEL COBALTITE; FACILE SYNTHESIS; NANOWIRE ARRAYS; ANODE MATERIAL; PERFORMANCE; OXIDE;
D O I
10.1039/c3cy00590a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Mesoporous spinel NiCo2O4 nanoparticles were synthesized via a simple hydrothermal strategy. Their physicochemical properties were characterized by X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectra (SEM-EDS), X-ray photoelectron spectra (XPS) and nitrogen sorption measurements. Their electrocatalytic performances were investigated by cyclic voltammetry (CV), chronoamperomerty (CA) and electrochemical impedance spectroscopy (EIS) tests. The obtained NiCo2O4 materials exhibit a particle size of about 200 nm, a specific surface area (SSA) of 88.94 m(2) g(-1) and a mesopore volume of 0.195 cm(3) g(-1). The binary electroactive sites of Co and Ni species, high electron conductivity and intriguing mesoporous structures of the NiCo2O4 electrode favor its desirable electro-catalytic activity. A current density of 93 mA cm(-2) at 0.6 V in 1 M KOH and 0.5 M CH3OH electrolytes was obtained for CH3OH electro-oxidation, and a current density of 130 mA cm(-2) at -0.3 V in 3 M NaOH and 0.5 M H2O2 electrolytes was achieved for H2O2 electro-reduction. Moreover, the NiCo2O4 electrode exhibits a high stability for both catalytic reactions, showing the potential for further development of high performance non-Pt catalysts based alkaline fuel cells (AFCs).
引用
收藏
页码:3207 / 3215
页数:9
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