TY - JOUR
T1 - Hierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysis
AU - Ming, Fangwang
AU - Liang, Hanfeng
AU - Shi, Huanhuan
AU - Mei, Gui
AU - Xu, Xun
AU - Wang, Zhoucheng
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank the National Natural Science Foundation of China (No. 51372212) for financial support.
PY - 2017/8/12
Y1 - 2017/8/12
N2 - In this work, we demonstrate that the electrocatalytic activity of transition metal chalcogenides can be greatly enhanced by simultaneously engineering the active sites, surface area, and conductivity. Using metal-organic frameworks-derived (Ni,Co)Se2/C hollow rhombic dodecahedra (HRD) as a demonstration, we show that the incorporation of Ni into CoSe2 could generates additional active sites, the hierarchical hollow structure promotes the electrolyte diffusion, the in-situ hybridization with C improves the conductivity. As a result, the (Ni,Co)Se2/C HRD exhibit superior performance toward the overall water-splitting electrocatalysis in 1M KOH with a cell voltage as low as 1.58V at the current density of 10mAcm−2, making the (Ni,Co)Se2/C HRD as a promising alternative to noble metal catalysts for water splitting.
AB - In this work, we demonstrate that the electrocatalytic activity of transition metal chalcogenides can be greatly enhanced by simultaneously engineering the active sites, surface area, and conductivity. Using metal-organic frameworks-derived (Ni,Co)Se2/C hollow rhombic dodecahedra (HRD) as a demonstration, we show that the incorporation of Ni into CoSe2 could generates additional active sites, the hierarchical hollow structure promotes the electrolyte diffusion, the in-situ hybridization with C improves the conductivity. As a result, the (Ni,Co)Se2/C HRD exhibit superior performance toward the overall water-splitting electrocatalysis in 1M KOH with a cell voltage as low as 1.58V at the current density of 10mAcm−2, making the (Ni,Co)Se2/C HRD as a promising alternative to noble metal catalysts for water splitting.
UR - http://hdl.handle.net/10754/625339
UR - http://www.sciencedirect.com/science/article/pii/S0013468617316869
UR - http://www.scopus.com/inward/record.url?scp=85027585800&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2017.08.047
DO - 10.1016/j.electacta.2017.08.047
M3 - Article
SN - 0013-4686
VL - 250
SP - 167
EP - 173
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -
