Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 11, Pages 3694-3698Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201511447
Keywords
electrocatalysts; FeOOH; hybrid nanotubes; oxygen evolution reaction
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Funding
- NSFC [51173212, 21476271, J1103305]
- National Basic Research Program of China [2015CB932304]
- NSFGP [S2013020012833]
- Fundamental Research Fund for the Central Universities [13lgpy51]
- SRF for ROCS, SEM [[2012]1707]
- New-Century Training Programme Foundation for the Talents by the State Education Commission [NCET-12-0560]
- Open-End Fund of Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education
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Herein, we developed FeOOH/Co/FeOOH hybrid nanotube arrays (HNTAs) supported on Ni foams for oxygen evolution reaction (OER). The inner Co metal cores serve as highly conductive layers to provide reliable electronic transmission, and can overcome the poor electrical conductivity of FeOOH efficiently. DFT calculations demonstrate the strong electronic interactions between Co and FeOOH in the FeOOH/Co/FeOOH HNTAs, and the hybrid structure can lower the energy barriers of intermediates and thus promote the catalytic reactions. The FeOOH/Co/FeOOH HNTAs exhibit high electrocatalytic performance for OER, such as low onset potential, small Tafel slope, and excellent long-term durability, and they are promising electrocatalysts for OER in alkaline solution.
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