Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 3, Pages 2911-2915Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b00084
Keywords
Electronic structure; Flexible electrode; X-ray absorption spectroscopy; Oxygen evolution reaction
Categories
Funding
- MOST [2017YFA0303500, 2014CB848900]
- NSFC [U1532112, 11574280, 21706248]
- Innovative Research Groups of NSFC [11621063]
- China Postdoctoral Science Foundation [BH2310000033]
- CAS Interdisciplinary Innovation Team
- CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SLH018]
- Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology [2016FXCX003]
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University (111 project) [B12015]
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The integration of active components and conductive supports forming free-standing electrodes is highly desirable for a series of energy storage and conversion devices. Herein, a facile hydrothermal method is developed to achieve the coupling of NiFe layered double hydroxide (LDH) and single-walled carbon nanotubes (SWNT) film, forming an integrated flexible electrode for oxygen evolution reaction (OER). The electrode requires a low overpotential of 250 mV to reach a current density of 10 mA cm(-2) in 1 M KOH, and shows rapid reaction kinetics with a Tafel slope of 35 mV dec(-1). Advanced soft X-ray absorption near-edge structure measurements efficiently indicate strong interfacial electron coupling between the LDH and SWNT, which authentically contributes to superior OER performance. This work provides a new strategy to design binder-free and flexile electrodes for practical application.
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