Journal
APPLIED SURFACE SCIENCE
Volume 396, Issue -, Pages 1146-1154Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2016.11.102
Keywords
Graphite paper; Ni-Fe hydroxide; Mn oxide; Electrodeposition; Electrocatalysis; Oxygen evolution reaction
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Funding
- National Natural Science Foundation of China [21163001]
- Guangxi Natural Science Foundation [2015GXNSFAA139028]
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Designing highly efficient electrocatalysts for oxygen evolution reaction is important to meet the requirement of various renewable energy storage and conversion devices. Generally, the performance of OER catalysts can be significantly improved by synergistic action of the underlying conductive substrate. In this work, a commercial graphite paper was used as a facile substrate with catalytic activity. Graphite paper produced 10 mA cm(-2) at an overpotential of 447 mV with a Tafel slope of 62 mV dec(-1). By depositing NiFe hydroxide or Mn oxide film onto the graphite paper, the electrode presented a superior activity for water oxidation, which was believed to be synergistically contributed by their available electrochemically active sites associated with the deposited film and the active substrate. High activities were also accompanied by remarkable durability at large current density levels. Our results illustrated a guideline to the design of inexpensive and highly active composite electrode for water oxidation. (C) 2016 Elsevier B.V. All rights reserved.
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