A Highly Active CoFe Layered Double Hydroxide for Water Splitting | Zendy

Feng Lanxiang | Zendy; Li Airong | Zendy; Li Yuxuan | Zendy; Liu Jia | Zendy; Wang Leidanyang | Zendy; Huang Lieyuan | Zendy; Wang Yong | Zendy; Ge Xingbo | Zendy

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A Highly Active CoFe Layered Double Hydroxide for Water Splitting

Author(s) -

Feng Lanxiang,

Li Airong,

Li Yuxuan,

Liu Jia,

Wang Leidanyang,

Huang Lieyuan,

Wang Yong,

Ge Xingbo

Publication year - 2017

Publication title -

chempluschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.801

H-Index - 61

ISSN - 2192-6506

DOI - 10.1002/cplu.201700005

Subject(s) - tafel equation , oxygen evolution , hydroxide , catalysis , water splitting , materials science , electrocatalyst , inorganic chemistry , chemical engineering , substrate (aquarium) , electrode , reversible hydrogen electrode , porosity , chemistry , electrochemistry , working electrode , composite material , organic chemistry , oceanography , photocatalysis , engineering , geology

Highly active, cost‐effective, and durable catalysts for oxygen evolution reaction (OER) are required in energy conversion and storage processes. A facile synthesis of CoFe layered double hydroxide (CoFe LDH) is reported as a highly active and stable oxygen evolution catalyst. By varying the concentration of the metal ion precursor, the Co/Fe ratios of LDH products can be tuned from 0.5 to 7.4. The structure and electrocatalytic activity of the obtained catalysts were found to show a strong dependence on the Co/Fe ratios. The Co 2 Fe 1 LDH sample exhibited the best electrocatalytic performance for OER with an onset potential of 1.52 V (vs. the reversible hydrogen electrode, RHE) and a Tafel slope of 83 mV dec −1 . The Co 2 Fe 1 LDH was further loaded onto a Ni foam (NF) substrate to form a 3D porous architecture electrode, offering a long‐term current density of 100 mA cm −2 at 1.65 V (vs. RHE) towards the OER.

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