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- Title
Homologous Catalysts Based on Fe-Doped CoP Nanoarrays for High-Performance Full Water Splitting under Benign Conditions.
- Authors
Ma, Min; Zhu, Guilei; Xie, Fengyu; Qu, Fengli; Liu, Zhiang; Du, Gu; Asiri, Abdullah M.; Yao, Yadong; Sun, Xuping
- Abstract
The design and development of earth-abundant electrocatalysts for efficient full water splitting under mild conditions are highly desired, yet remain a challenging task. A homologous Fe-doped Co-based nanoarray incorporating complementary catalysts is shown to effect high-performance and durable water splitting in near-neutral media. Iron-doped cobalt phosphate borate nanoarray on carbon cloth (Fe-Co-Pi-Bi/CC) derived from iron-doped cobalt phosphide on CC (Fe-CoP/CC) through oxidative polarization behaves as a highly active bimetallic electrocatalyst for water oxidation with an overpotential of 382 mV to afford a catalytic current density of 10 mA cm−2 in 0.1 m potassium borate (K-Bi, pH 9.2). Fe-CoP/CC is also highly active for the hydrogen evolution reaction, capable of driving 10 mA cm−2 at an overpotential of only 175 mV in 0.1 m K-Bi. A two-electrode water electrolyzer incorporating Fe-Co-Pi-Bi/CC as anode and Fe-CoP/CC as cathode achieves 10 mA cm−2 water-splitting current at a cell voltage of 1.95 V with strong long-term electrochemical durability.
- Subjects
ELECTROCATALYSTS; WATER electrolysis; IRON catalysts; PHOSPHATES; POLARIZATION (Electricity)
- Publication
ChemSusChem, 2017, Vol 10, Issue 16, p3188
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201700693