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- W2782170892 abstract "Application of a bifunctional electrocatalyst for simultaneously producing H2 and O2 is still a great challenge, which is important for the enhancement of the overall efficiency of water electrolysis. Taking advantages of the superior conductivity of N-doped graphite carbon, the good electrocatalytic performance of Co-based alloys for HER and excellent performance of cobalt-based oxide for OER, herein, we prepare a CoFex-CoFe2O4/N-doped carbon nanocomposite with a hierarchical porous structure used to HER and OER by pyrolysis of a new single source precursor {[Co(H2O)6][Fe(Hedta)Cl]2·4H2O]}. CoFex-CoFe2O4/N-doped carbon displays high activity with small overpotentials of respective 159 and 257 mV required to achieve a current density of 20 mA cm−2 as well as catalytic durability for HER and OER in 1.0 M KOH. Furthermore, this bifunctional electrocatalyst enables an alkaline electrolyzer with 20 mA cm−2 at a cell voltage of ∼1.68 V. The good performance of CF-CFO/NC for HER and OER can be attributed to the low charge transfer impedance, a porous structure and the synergistic role of cobalt-based alloy and cobalt-based mixed metal oxide. This work may provide a new approach to prepare an efficient, cost-effective and superior electrocatalyst in large scale using earth-abundant elements." @default.
- W2782170892 created "2018-01-12" @default.
- W2782170892 creator A5013659117 @default.
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- W2782170892 date "2018-02-01" @default.
- W2782170892 modified "2023-10-13" @default.
- W2782170892 title "CoFe -CoFe2O4/N-doped carbon nanocomposite derived from in situ pyrolysis of a single source precursor as a superior bifunctional electrocatalyst for water splitting" @default.
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- W2782170892 doi "https://doi.org/10.1016/j.electacta.2018.01.008" @default.
- W2782170892 hasPublicationYear "2018" @default.
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