| 第一作者： | Wang, XL (Wang, Xilong); Yang, C (Yang, Chen); Guo, P (Guo, Peng); Li, YD (Li, Yadong); Gao, NN (Gao, Nannan); Liang, HP (Liang, Han-Pu); |
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| 联系作者： | Wang, XL (Wang, Xilong); Yang, C (Yang, Chen); Guo, P (Guo, Peng); Li, YD (Li, Yadong); Gao, NN (Gao, Nannan); Liang, HP (Liang, Han-Pu); |
| 发表年度： | 2021 |
| 页： | - |
| 摘要： | Exploring nonprecious and highly efficient electrocatalysts for the oxygen reduction reaction (ORR) is critically important for the large scale application of metal-air batteries. Herein, iron oxides and Fe-N-4 moieties anchored on nitrogen doped porous carbon nanosheets (Fe2O3@C/FeNC-900) are designed and constructed by coordinating egg white with iron ions, followed by nitrogen doping and one-step pyrolysis under nitrogen atmosphere. The synthesis procedure, without the need of using any toxic materials or acid leaching post-treatment, is convenient and environmentally friendly. The unique structure of Fe2O3@C/FeNC-900 with atomically dispersed Fe-N-4 moieties and iron oxide nanoparticles confined in sheet-like porous carbon is revealed using XRD, TEM, XPS and X-ray absorption fine structure spectroscopy (XAFS). The multiple active centers and strong synergistic effects endow Fe2O3@C/FeNC-900 with excellent ORR catalysis performance in alkaline electrolyte. It exhibits a positive half-wave potential of 0.89 V in 0.1 M KOH and excellent long-term stability. Beyond that, the zinc-air battery (ZAB) using Fe2O3@C/FeNC-900 as the cathode material shows excellent electrochemical performance and remarkable cycling performance. This research provides a facile and environmentally friendly strategy for the synthesis of nonprecious electrocatalysts beneficial to practical metal-air battery applications. |
| 刊物名称： | NEW JOURNAL OF CHEMISTRY |
| 影响因子： | 3.069 |
| 全文链接： | https://pubs.rsc.org/en/content/articlelanding/2021/NJ/D1NJ02769G |
