Details

Autor(en) / Beteiligte

• Wang, Jing
• Zhong, Haihong
• Estudillo-Wong, Luis Alberto
• Li, Huiyu
• Alonso-Vante, Nicolas
• Li, Danqing
• Tang, Pinggui
• Feng, Yongjun

Titel

Synthesis and electrocatalytic performance of N-doped graphene embedded with Co/CoO nanoparticles towards oxygen evolution and reduction reactions

Ist Teil von

• Catalysis communications, 2022-04, Vol.164, p.106428, Article 106428

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• N-doped graphene decorated with cobalt-based nanoparticles (Co/CoO/NG-T) were obtained via a 1,10-phenanthroline assisted pyrolysis method. The optimized Co/CoO/NG-800 showed excellent performance with E1/2, ORR of 0.82 V vs. RHE and ηOER, 10 mA cm-2 of 407 mV. A good stability was obtained with only 20 mV negative drift in the half-wave potential after 2000 cycles, and a retention rate of 94% after 5 h. The prominent performance is attributed to the electronic interaction between Co-based species and N-doped graphene, and the presence of active pyridinic-N moieties. This work provides a revealing paradigm on the design of efficient non-precious metal-based electrocatalysts. [Display omitted] •N-doped graphene decorated with cobalt and cobalt oxide nanoparticles at different temperatures.•The optimized Co/CoO/NG-800 showed prominent ORR/OER performance.•The Co/CoO/NG-800 displayed a better cycle stability towards the ORR/OER.•The superb performance is attributed to the efficient electronic interaction.