共 32 条
Bifunctional electrocatalysts for oxygen reduction/evolution reactions derived from NiCoFe LDH materials
被引:18
作者:
Oliver-Tolentino, M.
[1
]
Vazquez-Samperio, J.
[2
]
Tufino-Velazquez, M.
[3
]
Flores-Moreno, J.
[4
]
Lartundo-Rojas, L.
[5
]
Gonzalez-Huerta, R. de G.
[1
]
机构:
[1] ESIQIE IPN, Inst Politecn Nacl, Dept Ingn Quim, Lab Electroquim & Corros,GAM, UPALM Edif 7 PB Zacatenco, Mexico City 07738, DF, Mexico
[2] CICATA, Inst Politecn Nacl, Lab Nacl Convers & Almacenamiento Energia, Calzada Legaria 694, Mexico City 11500, DF, Mexico
[3] ESFM, Inst Politecn Nacl, Lab Fis Avanzada, UPALM Edif 9 Zacatenco, Mexico City 07738, DF, Mexico
[4] Univ Autonoma Metropolitana Azcapotzalco, Area Quim Mat, Av SanPablo180, Mexico City 02200, DF, Mexico
[5] UPALM, Inst Politecn Nacl, CNMN, GAM, Luis Enrique Erro S-N, Mexico City 07738, DF, Mexico
关键词:
Electrocatalysts;
Spinel;
Intermedia spin;
Basicity;
Oxygen reaction;
LAYERED DOUBLE HYDROXIDES;
NONSTOICHIOMETRIC CO3O4 FILMS;
HIGH-SPIN CONFIGURATION;
METAL-AIR BATTERIES;
FERRITE SPINELS;
ALKALINE MEDIA;
REDUCTION;
NICO2O4;
CATALYSTS;
EFFICIENT;
D O I:
10.1007/s10800-018-1210-6
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
Materials obtained from thermal treatment of thermally treated NiCoFe-layered double hydroxides (LDH) with different Ni:Co ratios were evaluated as bifunctional catalysts for Oxygen Reduction Evolution and Evolution Reduction Reactions in alkaline media. The structural properties of synthesized materials were characterized by X-ray diffraction, Fourier-transform infrared, Raman, and X-ray photoelectron spectroscopies, whereas the basicity of each material was evaluated by temperature-programmed desorption of carbon dioxide. The results revealed the presence of inverse spinel structure with different compositions and a NiO phase with different amounts in the sample, while the electrochemical results showed a high activity towards oxygen reactions. The sample with higher amount of NiO and the lowest substitution grade on tetrahedral sites in the spinel-type structure exhibited the best catalytic activity. [GRAPHICS] .
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页码:947 / 957
页数:11
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