TY - JOUR
T1 - Bifunctional electrocatalysts for oxygen reduction/evolution reactions derived from NiCoFe LDH materials
AU - Oliver-Tolentino, M.
AU - Vazquez-Samperio, J.
AU - Tufiño-Velázquez, M.
AU - Flores-Moreno, J.
AU - Lartundo-Rojas, L.
AU - de, R.
N1 - Publisher Copyright:
© 2018, Springer Science+Business Media B.V., part of Springer Nature.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Abstract: 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. Graphical Abstract: [Figure not available: see fulltext.].
AB - Abstract: 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. Graphical Abstract: [Figure not available: see fulltext.].
KW - Basicity
KW - Electrocatalysts
KW - Intermedia spin
KW - Oxygen reaction
KW - Spinel
UR - http://www.scopus.com/inward/record.url?scp=85047209427&partnerID=8YFLogxK
U2 - 10.1007/s10800-018-1210-6
DO - 10.1007/s10800-018-1210-6
M3 - Artículo
SN - 0021-891X
VL - 48
SP - 947
EP - 957
JO - Journal of Applied Electrochemistry
JF - Journal of Applied Electrochemistry
IS - 8
ER -