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论文类型：期刊论文

发表时间：2018-04-05

发表刊物：ADVANCED ENERGY MATERIALS

收录刊物：SCIE、EI

卷号：8

期号：10

ISSN号：1614-6832

关键字：electrocatalysts; FeOOH; metal-organic frameworks; oxygen evolution reaction; porous carbon

摘要：As a cost-effective catalyst for the oxygen evolution reaction (OER), the potential use of FeOOH is hindered by its intrinsic poor electron conductivity. Here, the significant enhancement of OER activity and long-term stability of electrodeposited FeOOH on zeolitic imidazolate framework-derived N-doped porous carbons (NPCs) are reported. In alkaline media, FeOOH/NPC supported on nickel foam as a 3D electrode delivers a current density of 100 mA cm(-2) at a small overpotential of 230 mV and exhibits a low Tafel slope of 33.8 mV dec(-1) as well as excellent durability, making it one of the most active OER catalysts. Such high performance is attributed to a combined effect of the excellent electron conductivity of NPC and the synergy between FeOOH and NiO derived from Ni substrate.