@article{371,
  abstract     = {The design and engineering of earth-abundant catalysts that are both cost-effective and highly active for water splitting are crucial challenges in a number of energy conversion and storage technologies. In this direction, herein we report the synthesis of Fe3O4@NiFexOy core-shell nanoheterostructures and the characterization of their electrocatalytic performance toward the oxygen evolution reaction (OER). Such nanoparticles (NPs) were produced by a two-step synthesis procedure involving the colloidal synthesis of Fe3O4 nanocubes with a defective shell and the posterior diffusion of nickel cations within this defective shell. Fe3O4@NiFexOy NPs were subsequently spin-coated over ITO-covered glass and their electrocatalytic activity toward water oxidation in carbonate electrolyte was characterized. Fe3O4@NiFexOy catalysts reached current densities above 1 mA/cm2 with a 410 mV overpotential and Tafel slopes of 48 mV/dec, which is among the best electrocatalytic performances reported in carbonate electrolyte.},
  author       = {Luo, Zhishan and Márti Sánchez, Sara and Nafria, Raquel and Joshua, Gihan and De La Mata, Maria and Guardia, Pablo and Flox, Christina and Martínez Boubeta, Carlos and Simeonidis, Konstantinos and Llorca, Jordi and Morante, Joan and Arbiol, Jordi and Ibanez Sabate, Maria and Cabot, Andreu},
  issn         = {1944-8252},
  journal      = {Applied Materials and Interfaces},
  keywords     = {nanoparticle, iron oxide, magnetite, core−shell nanostructure, electrocatalysts, oxygen evolution reaction, OER},
  number       = {43},
  pages        = {29461 -- 29469},
  publisher    = {American Chemical Society},
  title        = {{Fe3O4@NiFexOy nanoparticles with enhanced electrocatalytic properties for oxygen evolution in carbonate electrolyte}},
  doi          = {10.1021/acsami.6b09888},
  volume       = {8},
  year         = {2016},
}