基于氮掺杂石墨烯/泡沫铁的三维复合阳极

武子杰; 冯奕钰; 龙鹏; 俞慧涛; 封伟

doi:10.14133/j.cnki.1008-9357.20230413002

基于氮掺杂石墨烯/泡沫铁的三维复合阳极

doi: 10.14133/j.cnki.1008-9357.20230413002

天津大学材料科学与工程学院天津 300072

基金项目: 国家重点研发计划（2022YFB3805702）；天津市杰出青年科学基金（19JCJQJC61700）；国家自然科学基金面上项目（51973152，52130303）

详细信息

作者简介:
武子杰（1998—），男，硕士生，主要研究方向为微生物燃料电池阳极材料；E-mail：tjclwzj@163.com

通讯作者:
封　伟， E-mail：weifeng@tju.edu.cn

中图分类号: O614
计量
- 文章访问数: 11
- HTML全文浏览量: 4
- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2023-04-13
- 网络出版日期: 2023-05-22

A Three-Dimensional Composite Anode Based on Nitrogen-Doped Graphene/Iron Foam

School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

摘要

摘要: 利用浸渍和高温还原法制备了一种由氮掺杂石墨烯包覆泡沫铁（N-rGO/IF）复合阳极，该阳极为大比表面积的三维结构且亲水性良好，可实现高密度微生物负载（1534 μg/cm²）。利用该N-rGO/IF阳极，将原电池集成在微生物燃料电池装置中以增加新的产电方式，从而组成了混合微生物燃料电池。电化学测试结果显示，在原电池（功率密度0.3585 mW/cm²）的增强作用下，以N-rGO/IF为复合阳极的混合微生物燃料电池实现了0.6019 mW/cm²的最大功率密度。结果表明，N-rGO/IF复合阳极可用于设计和制造大功率混合微生物燃料电池。
- 混合微生物燃料电池 /
- 功率密度 /
- 亲水性 /
- 原电池 /
- 微生物负载密度
Abstract: Hybrid microbial fuel cells integrating different technologies and applications are becoming one of the effective ways to break the power density limitation of microbial fuel cells in recent years. However, the typical hybrid microbial fuel cell technology is complicated to manufacture and limited by various conditions, which is not conducive to its realization for large scale applications. Herein, a three-dimensional iron foam anode coated by nitrogen-doped graphene (N-rGO/IF) was prepared by impregnation and high-temperature reduction, which has a large specific surface area three-dimensional structure. Thanks to the super hydrophilic nature of nitrogen-doped graphene (static water contact angle of 0°), the N-rGO/IF anode has good biocompatibility for high-density microbial loading (1534 μg/cm²). In addition, based on the iron foam substrate, the galvanic cell is successfully integrated into a microbial fuel cell device to construct a hybrid microbial fuel cell. This hybrid microbial fuel cell is simple to fabricate and has no condition limitations. The electrochemical test results show that this hybrid microbial fuel cell achieves a maximum power density of 0.6019 mW/cm² with the enhancement of the galvanic cell (0.3585 mW/cm²).The results indicate that N-rGO/IF composite anode can be used for the design and fabrication of high-power hybrid microbial fuel cells.
- hybrid microbial fuel cell /
- power density /
- hydrophilic /
- galvanic cell /
- microbial load density

HTML全文

图 1 N-rGO/IF阳极在混合MFC中的电子转移过程

Figure 1. Electron transfer process of N-rGO/IF anode in hybrid MFC

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图 2 （a）IF和（b）N-rGO/IF的SEM照片

Figure 2. SEM images of (a) IF and (b) N-rGO/IF

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图 3 （a）GO和N-rGO的FT-IR谱图；N-rGO的XPS光谱图：（b）全谱图和（c）N1s精细谱及含氮官能团分布

Figure 3. (a) FT-IR spectra of GO and N-rGO; XPS spectra of N-rGO: (b) full spectrum and (c) N1s fine spectrum and distribution of nitrogen-containing functional groups

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图 4 N-rGO/IF的静态水接触角测试图

Figure 4. Static water contact angle test chart of N-rGO/IF

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图 5 以IF和N-rGO/IF为阳极的混合MFC的（a）极化曲线、（b）功率密度曲线和（c）输出电压-时间曲线

Figure 5. (a) Polarization curves, (b) power density curves and (c) output voltage-time curves for hybrid MFC using IF and N-rGO/IF anodes

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图 6 （a）IF和（b）N-rGO/IF阳极上MR-1微生物细胞的SEM照片

Figure 6. SEM images of the MR-1 bacterial cells: (a) IF and (b) N-rGO/IF

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图 7 IF和N-rGO/IF阳极的BCA蛋白检测结果

Figure 7. Results of BCA protein detection for IF and N-rGO/IF anodes

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图 8 以IF和N-rGO/IF为阳极原电池的（a）极化曲线、（b）功率密度曲线和（c）输出电压-时间曲线；（d）IF和（e）N-rGO/IF阳极反应前后的Fe2p精细谱

Figure 8. (a) Polarization curves, (b) power density curves, and (c) output voltage-time curves for primary cells using IF and N-rGO/IF anodes；Fe2p fine spectra before and after the reaction of (d) IF and (e) N-rGO/IF anode samples

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