Facile synthesis of ultrathin Ni(OH)2-Cu2S hexagonal nanosheets hybrid for oxygen evolution reaction

作者：Yang, Duo; Gao, Li^*; Yang, Jing-He^*

来源：Journal of Power Sources, 2017, 359: 52-56.

DOI：10.1016/j.jpowsour.2017.05.034

• Oxygen evolution reaction
• Ni(OH)(2)
• Cu2S
• Nanosheets
• Nanocomposites

The development of non-noble metal water oxidation catalyst has been a challenge in oxygen evolution reaction. A two-dimensional (2D) ultrathin Ni(OH)(2)-Cu2S hexagonal nanosheet hybrid is in situ synthesized by hydrothermal reaction as electrocatalyst for oxygen evolution reaction. The 2D ultrathin hexagonal Ni(OH)(2)-Cu2S nanosheets are homogeneous in size with edge lengths of 20-30 nm. This catalyst exhibits a current density of 10 mA cm(-2) at an over-potential of 0.5 V and Tafel slope of 89 mV dec(-1) for water oxidation in 0.1 M KOH. Moreover, the nanosheets are stable and no deactivation is observed during the following cyclic voltammetry cycles, even up to 3500 cycles.

• 出版日期2017-8-15
• 单位河南大学; 郑州大学