Title

Mesoporous Ni-Fe oxide multi-composite hollow nanocages for efficient electrocatalytic water oxidation reactions

RIS ID

112970

Publication Details

Kang, B. Kyun., Woo, M. Hyun., Lee, J., Song, Y., Wang, Z., Guo, Y., Yamauchi, Y., Kim, J., Lim, B. & Yoon, D. Ho. (2017). Mesoporous Ni-Fe oxide multi-composite hollow nanocages for efficient electrocatalytic water oxidation reactions. Journal of Materials Chemistry A, 5 (9), 4320-4324.

Abstract

Mesoporous NiO/NiFe2O4 multi-composite hollow nanocages via monodisperse Ni3[Fe(CN)6]2 prussian blue analogue nanocube precursors were successfully synthesized. The three-dimensional (3D) mesoporous and hollow structures provided an efficient electrolyte diffusion path and a high surface area, resulting in the enhancement of electrocatalytic activities for the oxygen evolution reaction. The overpotential and Tafel slope of mesoporous NiO/NiFe2O4 multi-composite hollow nanocages were as low as 303 mV at a current density of 10 mA cm−2 and 58.5 mV dec−1, respectively. In addition, the composite showed excellent durability at approximately 60 mA cm−2 for 12 h.

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Link to publisher version (DOI)

http://dx.doi.org/10.1039/c6ta10094e