Nitrogen-Doped Defect-Rich Graphitic Carbon Nanorings with CoOx Nanoparticles as Highly Efficient Electrocatalyst for Oxygen Electrochemistry
Abstrak
Low-cost and high-performance electrocatalysts for electrochemical reactions are of crucial importance for renewable and sustainable energy technologies including rechargeable metal-air batteries and fuel cells. Nanocarbon materials, as a promising alternative to replace the state-of-the-art noble metal electrocatalysts, have attracted much interest, whereas the balance of the defect engineering and electric conductivity for them is still challenging. This work reports a discrete CoOx nanoparticles (CoOx NPs) situated in N-doped graphitic carbon nanorings (CoOx@NGCR), featuring graphitic but defect-rich characteristics, through a facile process of hydrothermal synthesis and subsequent high-temperature pyrolysis with in situ catalytic graphitization. The synergy arising from defect engineering and enhanced electric conductivity as well as hollow ring-shaped nanostructure of the fabricated CoOx@NGCR significantly boost the electrocatalytic activity for oxygen reduction reaction (ORR) and oxygen evolution re...
Topik & Kata Kunci
Penulis (4)
Chenchen Weng
Jin-Tao Ren
Zhongpan Hu
Z. Yuan
Akses Cepat
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- 2018
- Bahasa
- en
- Total Sitasi
- 35×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1021/ACSSUSCHEMENG.8B04406
- Akses
- Open Access ✓