Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 243, Issue -, Pages 463-469Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2018.10.071
Keywords
Water splitting; Oxygen evolution reaction; Electrocatalysis; Nickel selenide; Graphitic carbon nitride
Funding
- Longshan Academic Talent Research Supporting Program of SWUST [18LZX322, 17LZX406]
- National Natural Science Foundation of China [41872039, 41831285]
- One-Thousand-Talents Scheme in Sichuan Province [2018JY0462]
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Oxygen evolution reaction is a significant half-reaction for water splitting, while its sluggish kinetics and high-cost catalyst hinder the commercial application. In this work, we report a novel nanocoral-like NiSe2/g-C3N4 composite as highly efficient catalyst for water oxidation in 1.0 M KOH solution. Based on the support of multi-layered g-C3N4, NiSe2/g-C3N4 composite exhibits favorable electrocatalytic performances with low overpotential of 290 mV at current density of 40 mA cm(-2) and low onset potential of 1.38 V (vs. RHE). In addition, NiSe2/g-C3N4 composite delivers higher current density (199 mA cm(-2)) than those of pure NiSe2 (142 mA cm(-2)) and multi-layered g-C3N4 (112 mA cm(-2)) at potential of 2.0 V (vs. RHE). Furthermore, NiSe2/g-C3N4 composite exhibits an excellent long-term electrochemical stability for 10 h. The outstanding electrocatalytic properties above suggest that NiSe2/g-C3N4 composite is a candidate for the substitution of noble metal based catalyst for oxygen evolution reaction.
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