Journal
CHEMNANOMAT
Volume 6, Issue 7, Pages 1119-1126Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.202000238
Keywords
Hollow heterostructures; Tansition-metal phosphides (TMPs); CeOx; Two-dimensional Co-MOF; Electrocatalytic water splitting
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Funding
- National Natural Science Foundation of China [21871121]
- Fundamental Research Funds for the Central Universities [Lzujbky-2018-ot01]
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Constructing heterostructures has been identified as an efficient means to optimize the catalytic activity and boost electrocatalytic performances. Herein, we designed a novel hollow CeOx/CoP heterostructure supported on nickel foam (NF) through two-dimensional Co-metal-organic framework (Co-MOF) as template, which could be used in electrocatalytic water splitting The hollow CeOx/CoP/NF nanocatalyst demonstrated excellent activities toward oxygen evolution reaction (OER) in anode and hydrogen evolution reaction (HER) in cathode with relatively low overpotential (264 mV and 117 mV) at 10 mA cm(-2). Besides, the battery potential was only 1.63 V toward electrocatalytic water-splitting at 10 mA cm(-2), and demonstrated excellent operational durability for 60 h. In this work, introducing CeOx significantly enhanced the inherent activity of monophase transition-metal phosphides (TMPs). Thus, this work may provide a new standpoint for constructing heterostructures with high activity containing transition-metal compounds and rare earth species for electrocatalytic water splitting.
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