TY - JOUR
T1 - Hollow Multivoid Nanocuboids Derived from Ternary Ni–Co–Fe Prussian Blue Analog for Dual-Electrocatalysis of Oxygen and Hydrogen Evolution Reactions
AU - Ahn, Wook
AU - Park, Moon Gyu
AU - Lee, Dong Un
AU - Seo, Min Ho
AU - Jiang, Gaopeng
AU - Cano, Zachary P.
AU - Hassan, Fathy Mohamed
AU - Chen, Zhongwei
N1 - Funding Information:
W.A. and M.G.P. contributed equally to this work. The authors wish to acknowledge the support provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) through grants to Waterloo Institute for Nanotechnology at the University of Waterloo. This research was also supported by the Soonchunhyang University Research Fund.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/7/11
Y1 - 2018/7/11
N2 - Hydrogen generation from electrochemical water-splitting is an attractive technology for clean and efficient energy conversion and storage, but it requires efficient and robust non-noble electrocatalysts for hydrogen and oxygen evolution reactions (HER and OER). Nonprecious transition metal–organic frameworks (MOFs) are one of the most promising precursors for developing advanced functional catalysts with high porosity and structural rigidity. Herein, a new transition metal-based hollow multivoid nanocuboidal catalyst synthesized from a ternary Ni–Co–Fe (NCF)-MOF precursor is rationally designed to produce dual-functionality toward OER and HER. Differing ion exchanging rates of the ternary transition metals within the prussian blue analog MOF precursor are exploited to produce interconnected internal voids, heteroatom doping, and a favorably tuned electronic structure. This design strategy significantly increases active surface area and pathways for mass transport, resulting in excellent electroactivities toward OER and HER, which are competitive with recently reported single-function nonprecious catalysts. Moreover, outstanding electrochemical durability is realized due to the unique rigid and interconnected porous structure which considerably retains initial rapid charge transfer and mass transport of active species. The MOF-based material design strategy demonstrated here exemplifies a novel and versatile approach to developing non-noble electrocatalysts with high activity and durability for advanced electrochemical water-splitting systems.
AB - Hydrogen generation from electrochemical water-splitting is an attractive technology for clean and efficient energy conversion and storage, but it requires efficient and robust non-noble electrocatalysts for hydrogen and oxygen evolution reactions (HER and OER). Nonprecious transition metal–organic frameworks (MOFs) are one of the most promising precursors for developing advanced functional catalysts with high porosity and structural rigidity. Herein, a new transition metal-based hollow multivoid nanocuboidal catalyst synthesized from a ternary Ni–Co–Fe (NCF)-MOF precursor is rationally designed to produce dual-functionality toward OER and HER. Differing ion exchanging rates of the ternary transition metals within the prussian blue analog MOF precursor are exploited to produce interconnected internal voids, heteroatom doping, and a favorably tuned electronic structure. This design strategy significantly increases active surface area and pathways for mass transport, resulting in excellent electroactivities toward OER and HER, which are competitive with recently reported single-function nonprecious catalysts. Moreover, outstanding electrochemical durability is realized due to the unique rigid and interconnected porous structure which considerably retains initial rapid charge transfer and mass transport of active species. The MOF-based material design strategy demonstrated here exemplifies a novel and versatile approach to developing non-noble electrocatalysts with high activity and durability for advanced electrochemical water-splitting systems.
KW - bifunctional electrocatalysts
KW - hydrogen evolution reaction
KW - metal–organic-framework
KW - oxygen evolution reaction
KW - water-splitting
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U2 - 10.1002/adfm.201802129
DO - 10.1002/adfm.201802129
M3 - Article
AN - SCOPUS:85049597113
SN - 1616-301X
VL - 28
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 28
M1 - 1802129
ER -