Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 877, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2020.114732
Keywords
Carbon nanosheets; Template-free; Electrocatalyst; Oxygen reduction reaction; Heteroatom doping
Categories
Funding
- Jiangxi Provincial Natural Science Foundation [20202BABL204019, 20181BAB203012]
- Foundation of Jiangxi Province Educational Committee [GJJ180365, GJJ170427]
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices [1410600834]
- Education Reform Project of ECUT [DHJG-19-18]
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Two-dimensional (2D) porous carbon nanomaterials are of great interest for various applications in the field of energy conversion and storage. The development of efficient metal-free electrocatalysts for oxygen reduction reaction (ORR) with cost-efficient and simple approach still remains a significant challenge. Herein, we report a facile and template-free strategy to construct N, P co-doped porous carbon nanosheets (NPPC) by pyrolysis of calcium gluconate as carbon support and phosphonitrilic chloride trimer as the source N and P. The resultant NPPC, as metal-free electrocatalyst for ORR, exhibits outstanding electrocatalytic performance with a more positive half-wave potential of 0.87 V, longer durability and superior tolerance to methanol than those of commercial Pt/C in alkaline solution. Excellent ORR properties are contributed from the synergistic effect of abundant active sites of N, P and defects distributed in the carbon framework and 2D hierarchical pore morphology. Impressively, it is promising to inspire a general route for large-scale and facile synthesis of 2D porous carbon nanomaterials for application in new energy devices.
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