Regulating the active species of Ni(OH)₂ using CeO₂: 3D CeO₂/Ni(OH)₂/carbon foam as an efficient electrode for the oxygen evolution reaction.

ABSTRACT: Three dimensional (3D) N, O and S doped carbon foam (NOSCF) is prepared as a substrate for in situ vertically grown Ni(OH)₂ nanosheets. As designed Ni(OH)₂/NOSCF possesses strong electrostatic interactions with OH^- ions due to many C[double bond, length as m-dash]O groups existing in NOSCF, which can facilitate the formation of crucial NiOOH intermediates during the OER process. CeO₂ nanoparticles (NPs) of ∼3.3 nm in size are decorated on Ni(OH)₂ nanosheets to design a highly efficient CeO₂/Ni(OH)₂/NOSCF electrocatalyst for the oxygen evolution reaction (OER). The CeO₂ NP decorated Ni(OH)₂/NOSCF not only exhibits a remarkably improved OER performance with an onset potential of 240 mV,

SUBMITTER: Liu Z 

PROVIDER: S-EPMC5414546 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature