Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 32, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202108681
Keywords
complex hollow nanostructures; composition regulation; structural modulation; water splitting
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Funding
- National Natural Science Foundation of China [21975015]
- Fundamental Research Funds for the Central Universities [buctrc201904]
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Complex hollow electrocatalysts are considered promising solutions to accelerate the kinetics of hydrogen/oxygen evolution reaction, due to their advantageous features like abundant active sites, increased contact area, and shortened transport length.
Electrochemical water splitting powered by renewable energy sources has been considered as an attractive hydrogen generation technology with high-purity product and zero carbon emission. However, the efficient realization of large-scale water splitting is severely hampered by the sluggish hydrogen/oxygen evolution reaction (HER/OER). As an important class of functional materials, complex hollow electrocatalysts provide promising solutions to accelerate the HER/OER kinetics owing to their advantageous features, such as abundant exposed active sites, increased contact area between catalysts and electrolyte, and shortened mass/charge transport length. Herein, the recent advances in the development of complex hollow electrocatalysts and their outstanding performances in water splitting are summarized. Beginning with the introduction of reaction mechanisms and design principles, achievements in engineering complex hollow HER/OER electrocatalysts are highlighted with the focus on structural modulation, composition control, and electrocatalytic evaluation. Finally, some present challenges and future perspectives for advanced complex hollow electrocatalysts toward water splitting are further discussed.
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