Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 279, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.119367
Keywords
Transition metal phosphide; Wood framework; Hierarchical structure; Efficiency and durability; Oxygen evolution reaction
Funding
- National Science Foundation of China [31922057, 31890771, 21905307]
- Young Elite Scientists Sponsorship Program from National Forestry and Grassland Administration of China [2019132614]
- Hunan Provincial Technical Innovation Platform and Talent Program in Science and Technology [2018RS3092, 2018WK4028]
- Outstanding Innovative Youth Training Program of Changsha [KQ1905060]
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Architecture design and optimization are regarded as essential approaches for improving the catalytic performance toward oxygen evolution reaction. Inspired by the natural porosity and directional micro-channels of wood, a universal strategy that N-doped carbon nanotube encapsulated active nanoparticles rooted into carbonized wood framework is proposed. The as-prepared catalysts show ultrahigh activity and robust stability. Representatively, the FeNi-P encapsulated in N-doped carbon nanotubes grown on the carbonized wood frameworks (denoted as FeNi-P@NCNT/CW) exhibit an outstanding OER activity with an overpotential of 180 mV to reach 50 mA cm(-2). As comparison, such catalysts integrated in nickel foam and carbon paper require higher overpotentials with 251 and 249 mV, respectively. Furthermore, a steady OER overpotential is maintained even tested for more than 200 h (4.2 % decay). The referred construction will open a new road to adopting renewable resources for preparing efficient electrocatalysts and other electrochemical energy-conversion devices.
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