| 铁硫氮共掺杂多孔碳阴极催化剂强化微生物燃料电池性能的研究 |
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| 引用本文： | 唐新华,贾煜瑒,崔杨,陈默禹,刘磊.铁硫氮共掺杂多孔碳阴极催化剂强化微生物燃料电池性能的研究[J].环境工程,2021,39(10):163-170. |
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| 作者姓名： | 唐新华 贾煜瑒 崔杨 陈默禹 刘磊 |
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| 作者单位： | 武汉理工大学土木工程与建筑学院,武汉430070 |
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| 基金项目： | 国家自然科学基金资助项目（21806126）。 |
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| 摘 要： | 以杨梅为生物质、Fe2（SO4）3为掺杂源，通过水合-热解-碳化的方法制备了FeSN-C复合催化材料，对其进行表征并应用于催化微生物燃料电池的阴极氧还原反应。结果表明:FeSN-C阴极在产能性能上表现优越，产生的峰值输出电压和功率密度为550 mV和854 mW/m2，分别为商业铂碳的98.6%和83.2%。同时FeSN-C阴极具有较低的过电位和高电子转移数（n=3.78），遵循1个由四电子主导的催化过程。FeSN-C阴极相比于铂碳阴极具有更好的稳定性，在电流衰减测试中，FeSN-C阴极的衰减为17.1%，明显低于铂碳阴极的23.5%。Fe、S、N等原子的掺杂使得碳骨架发生了大量塌陷，这有利于暴露出更多的活性位点，同时Fe、S、N之间的协同作用也是提高阴极氧还原反应性能的关键。
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| 关 键 词： | 微生物燃料电池 阴极催化剂 功率密度 活性位点 氧还原反应 |
| 收稿时间： | 2020-12-12 |
ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST |
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| TANG Xin-hua,JIA Yu-yang,CUI Yang,CHEN Mo-yu,LIU Lei.ENHANCEMENT OF MICROBIAL FUEL CELL PERFORMANCE BY Fe-S-N CO-DOPED POROUS CARBON CATHODE CATALYST[J].Environmental Engineering,2021,39(10):163-170. |
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| Authors: | TANG Xin-hua JIA Yu-yang CUI Yang CHEN Mo-yu LIU Lei |
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| Affiliation: | School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | FeSN-Ccomposite catalytic material was prepared by hydration-pyrolyzation-carbonization using baycherry as a biomass and Fe2(SO4)3 as the doping source. FeSN-C composite catalytic material was characterized and applied as a cathode of microbial fuel cells (MFC) to drive the oxygen reduction reaction(ORR). The results showed that FeSN-C cathode performed well in electricity generation, producing the peak output voltage and power density of 550 mV and 854 mW/m2, which were 98.6% and 83.2% of that of commercial platinum carbon (Pt/C),respectively. At the same time, FeSN-C cathode had a small overpotential and high electron transfer number for ORR (n=3.78), dominated by the four electronic transfer reaction process. Further compared to the commercial platinum carbon product, FeSN-C had stronger stability, which was reduced by 17.1% in the current attenuation test, lower than 23.5% of the Pt/C cathode. The doping of Fe, S and N atoms led to a large collapse of the carbon skeleton, where more active sites were exposed. Meanwhile, the synergy between Fe, S, N was the key to improve the ORR of the cathode. |
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