异源黑色素/石墨烯复合材料对微生物燃料电池产电性能的影响及机制研究

董琪琪; 吴瑒; 龙敏; 郑雄; 陈银广

doi:10.13205/j.hjgc.202508011

异源黑色素/石墨烯复合材料对微生物燃料电池产电性能的影响及机制研究

doi: 10.13205/j.hjgc.202508011

董琪琪¹,
吴瑒¹,
龙敏¹,
郑雄^1,2, ,,
陈银广^1,2

1. 同济大学环境科学与工程学院水污染控制与资源绿色循环全国重点实验室, 上海 200092;
2. 上海污染控制与生态安全研究院, 上海 200092

基金项目:

国家自然科学基金项目（52470057）

详细信息

作者简介:
董琪琪（2003—），女，硕士研究生，主要研究方向为城市污水生物处理与资源化利用。2431492@tongji.edu.cn

通讯作者:
郑雄（1985—），男，教授，主要研究方向为城市污水生物处理与资源化利用。xiongzheng@tongji.edu.cn

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出版历程
- 收稿日期: 2025-03-24
- 录用日期: 2025-04-30
- 修回日期: 2025-04-15

Effects and mechanisms of heterogeneous melanin/graphene composite materials on power generation performance of microbial fuel cells

DONG Qiqi¹,
WU Yang¹,
LONG Min¹,
ZHENG Xiong^{1,2
, ,},
CHEN Yinguang^1,2

1. State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China

摘要

摘要: 微生物燃料电池（microbial fuel cell，MFC）作为一种新型清洁能源技术，其阴极电子传递效率是制约产电性能的关键因素之一。以黑色素为代表的氧化还原活性物质虽具有促进电子转移的潜力，但不同来源黑色素作为阴极催化剂，对MFC产电性能的影响及其作用机制尚未明确。为此，研究系统考察了生物源和化学源黑色素/石墨烯复合材料在MFC中的催化性能。结果表明：生物源黑色素较化学源黑色素表现出更优异的分散稳定性。与石墨烯复合时，尽管生物源黑色素/石墨烯复合材料的实际负载量较低，但其C—N键含量最高，且表面富集了Fe等有益微量元素。在不同碳源和温度条件下的性能评估中发现，以生物源黑色素/石墨烯复合材料为阴极催化剂的MFC表现出最佳的产电性能和环境适应性，在乙酸钠为碳源时最大输出电压达（0.254±0.003）V，较未修饰石墨烯和化学源黑色素/石墨烯复合材料分别提高了30.3%和33.7%。机理研究表明，生物源黑色素/石墨烯复合材料能够显著提升微生物细胞活力，增强微生物胞内的还原力和电子传递效率，从而实现MFC产电性能的显著提升。该研究为开发高效MFC阴极催化剂提供了新思路，同时也为深入理解电子传递过程中的关键影响因素奠定了理论基础。
- 黑色素 /
- 微生物燃料电池 /
- 阴极催化剂 /
- 石墨烯 /
- 产电性能
Abstract: Microbial fuel cells （MFCs）， as an emerging clean energy technology， are primarily limited by the efficiency of electron transfer at the cathode. Although redox-active substances such as melanin show potential in promoting electron transfer， the effects and mechanisms of melanin from different sources as cathode catalysts on MFC performance remain unclear. This study systematically investigated the catalytic performance of biological and chemical melanin/graphene composites in MFCs. The results showed that biological melanin exhibited superior dispersion stability compared to its chemical counterpart. Although the biological melanin/graphene composite had a relatively lower loading capacity， it demonstrated the highest C-N bond content and beneficial trace element enrichment， particularly Fe， on its surface. Performance evaluation under various carbon sources and temperature conditions revealed that MFCs with biological melanin/graphene composite materials as the cathode catalyst achieved optimal power generation and environmental adaptability. Using sodium acetate as the carbon source， the maximum output voltage reached （0.254±0.003） V， showing increases of 30.3% and 33.7% compared to unmodified graphene and chemical melanin/graphene composite materials， respectively. Mechanistic studies indicated that biological melanin/graphene composite materials significantly enhanced microbial cell viability and improved the relative reducing power and electron transfer levels within mixed microorganisms， leading to substantially improved MFC performance. This research not only provides new insights into developing efficient MFC cathode catalysts but also establishes a theoretical foundation for understanding key factors in electron transfer processes.
- melanin /
- microbial fuel cell /
- cathode catalyst /
- graphene /
- power generation performance

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