Cover Picture
P-Ni
4Mo
Catalyst for Seawater Electrolysis with High Current Density and Durability

Gai Li, Suyang Feng, Jing Li*, Peilin Deng, Xinlong Tian, Chongtai Wang and Yingjie Hua* Submit a Manuscript

Coupling of NiFe-Based Metal-Organic Framework Nanosheet Arrays with Embedded Fe-Ni3S2 Clusters as Efficient Bifunctional Electrocatalysts for Overall Water Splitting

Xianbiao Hou, Tianyuan Jiang, Xiujuan Xu, Xingkun Wang, Jian Zhou, Huimin Xie, Zhicheng Liu, Lei Chu* and Minghua Huang*

Chin. J. Struct. Chem. 2022, 41, 2207074-2207080  DOI: 10.14102/j.cnki.0254-5861.2022-0145

July 18, 2022

metal-organic frameworks, metal sulfides, nanosheet arrays, electrocatalysts, water splitting

ABSTRACT

Developing highly efficient, easy-to-make and cost-effective bifunctional electrocatalysts for water splitting with lower cell voltages is crucial to producing massive hydrogen fuel. In response, the coupled hierarchical Ni/Fe-based MOF nanosheet arrays with embedded metal sulfide nanoclusters onto nickel foam skeleton (denoted as Fe-Ni3S2 @NiFe-MOF/NF) are fabricated, in which the Fe-Ni3S2 clusters could effectively restrain the aggregation of the layer metal-organic frameworks (MOF) nanosheets and adjust the local electronic structures of MOFs nanosheets. Benefiting from the rapid charge transfer and the exposure of abundant active sites, the well-designed Fe-Ni3S2@NiFe-MOF/NF displays excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance. More importantly, when equipped in the alkaline water electrolyzer, the Fe-Ni3S2@NiFe-MOF/NF enables the system with a mere 1.6 V for achieving the current density of 10 mA cm-2. This work offers a paradigm for designing efficient bifunctional HER/OER electrocatalysts based on the hybrid materials of nanostructured metal sulfide and MOF.





PDF Download PDF Download Supporting Information

Download Times 616 Article Views 672