| 任腾飞,朱竹军,董鸿波,袁志国,王超,吴光平.化学通报,2022,85(7):822-825. |
| 树脂包覆ZIF-67衍生物制备Co-基氮掺杂多孔碳材料作为ORR催化剂的研究 |
| Preparation of nitrogen-doped Co-based porous carbon materials with ZIF-67 derivatives coated resin as ORR catalysts |
| 投稿时间：2021-10-11 修订日期：2021-12-10 |
| DOI： |
| 中文关键词: 多孔碳材料，氧还原反应，ZIF-67，非贵金属催化剂 |
| 英文关键词:Porous carbon materials, Oxygen reduction reaction, ZIF-67, Non-precious electrocatalyst. |
| 基金项目:山西省留学基金委资助科研项目(2021-120)和山西格盟中美清洁能源研发中心有限公司横向项目(2021-12)资助 |
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| 中文摘要: |
| 寻找高稳定性、高性能、低成本的非贵金属氧还原（ORR）催化剂对碱性燃料电池的发展具有重大意义。本研究利用杂原子（N，S）掺杂多孔碳材料和ZIF-67中非贵金属的协同作用制备出性能优良的非贵金属催化剂Co-N/S@CET。物理表征得到炭化后的催化剂表面具有介孔结构，且Co和N进行了大量配位，并且通过XPS测试揭示了催化剂中具有大量Co-Nx活性位点。电化学测试结果表明，Co-N/S@CET具有良好的ORR活性和稳定性，极限电流密度达到5.0 mA/cm2，半波电位达到0.85V，且具有优异的稳定性（10000秒后仅衰减4%）。 |
| 英文摘要: |
| It is of great significance to find non-noble metal oxygen reduction (ORR) catalysts with high stability, excellent performance and low cost for the development of alkaline fuel cells. In this study, a good non-noble metal catalyst Co-N/S@CET was prepared by the synergistic action of heteroatom-doped porous carbon and non-noble metal in ZIF-67. Through physical characterization, it was found that the surface of the carbonized catalyst had a mesoporous structure, and a large number of Co and N coordinated, and XPS test revealed a large number Co-Nx active sites in the catalyst. The results of electrochemical tests showed the Co-N/S@CET had good ORR activity and stability. Its limit current density reaches 5.0 mA/cm2 and half wave potential reaches 0.85V. And it has excellent stability (only 4% attenuation after 10000 seconds). |
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