Journal
ADVANCED MATERIALS
Volume 34, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202104405
Keywords
electrocatalysts; heterostructures; nanostructures; oxygen evolution reaction; topochemical reactions
Categories
Funding
- Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang [2020R01002]
- National Natural Science Foundation of China [21902144, 11904317, 51722210]
- Natural Science Foundation of Zhejiang Province [LD18E020003]
- Ministry of Education of Singapore via the Academic Research Fund (AcRF) Tier-1 grant [RG3/20]
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Constructing catalytically active heterostructures with novel composition and architecture for boosting water splitting efficiency remains a challenge, but this work demonstrates a rational synthetic route for creating a novel Ni-based OER electrocatalyst with enhanced performance.
Exploiting effective electrocatalysts based on elaborate heterostructures for the oxygen evolution reaction (OER) has been considered as a promising strategy for boosting water splitting efficiency to produce the clean energy-hydrogen. However, constructing catalytically active heterostructures with novel composition and architecture remains poorly developed due to the synthetic challenge. In this work, it is demonstrated that unique Ni(CN)(2)/NiSe2 heterostructures, composed of single-crystalline Ni(CN)(2) nanoplates surrounded by crystallographically aligned NiSe2 nanosatellites, can be created from nickel-based Hofmann-type coordination polymers through stepwise topochemical pathways. When employed as the OER electrocatalyst, the Ni(CN)(2)/NiSe2 heterostructures show enhanced performance, which could be attributed to optimized geometric and electronic structures of the catalytic sites endowed by the synergy between the two components. This work demonstrates a rational synthetic route for creating a novel Ni-based OER electrocatalyst that possesses nanoscale heterostructure, whose composition, spatial organization, and interface configuration can be finely manipulated.
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