Jiang Xiao-Xiao, Xue Jiang-Yan, Zhao Zhong-Yin, Li Cong, Li Fei-Long, Cao Chen, Niu Zheng, Gu Hong-Wei, Lang Jian-Ping
College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 Jiangsu People's Republic of China
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 People's Republic of China.
RSC Adv. 2020 Mar 25;10(21):12145-12150. doi: 10.1039/d0ra00845a. eCollection 2020 Mar 24.
As an important two-dimensional material, layered double hydroxides (LDHs) show considerable potential in electrocatalytic reactions. However, the great thickness of the bulk LDH materials significantly limits their catalytic activity. In this work, we report ultrathin NiFe-LDH nanosheets with sulfate interlayer anions (NiFe(SO)(OH)·7HO) (U-LDH(SO )), which can be synthesized in gram-scale by a simple solvothermal method. The U-LDH(SO ) shows excellent stability and great electrocatalytic performance in OER with a current density of 10 mA cm at a low overpotential of 212 mV and a small Tafel slope of 65.2 mV dec, exhibiting its great potential for a highly efficient OER electrocatalyst.
作为一种重要的二维材料，层状双氢氧化物（LDHs）在电催化反应中显示出巨大潜力。然而，块状LDH材料的较大厚度显著限制了其催化活性。在本工作中，我们报道了具有硫酸根层间阴离子的超薄NiFe-LDH纳米片（NiFe(SO)(OH)·7HO）（U-LDH(SO)），其可通过简单的溶剂热法以克级规模合成。U-LDH(SO)在析氧反应（OER）中表现出优异的稳定性和出色的电催化性能，在212 mV的低过电位下电流密度为10 mA cm，塔菲尔斜率为65.2 mV dec，显示出其作为高效OER电催化剂的巨大潜力。
