Nanocoral-like composite of nickel selenide nanoparticles anchored on two-dimensional multi-layered graphitic carbon nitride: A highly efficient electrocatalyst for oxygen evolution reaction

作者：Wang, Shuai; He, Ping^*; Jia, Lingpu^*; He, Mingqian; Zhang, Tinghong^*; Dong, Faqin; Liu, Mingzhang; Liu, Huanhuan; Zhang, Ying; Li, Caixia; Gao, Jun; Bian, Liang

来源：Applied Catalysis B: Environmental , 2019, 243: 463-469.

DOI：10.1016/j.apcatb.2018.10.071

• Water splitting
• Oxygen evolution reaction
• Electrocatalysis
• Nickel selenide
• Graphitic carbon nitride

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.

• 出版日期2019-4
• 单位西南科技大学