基于氮掺杂石墨烯/泡沫铁的三维复合阳极  

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

作　　者：武子杰 冯奕钰[1] 龙鹏 俞慧涛 封伟[1] WU Zijie;FENG Yiyu;LONG Peng;YU Huitao;FENG Wei(School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学材料科学与工程学院,天津300072

出　　处：《功能高分子学报》2023年第4期365-371,I0003,共8页Journal of Functional Polymers

基　　金：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)。

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(1534μg/cm^(2))。利用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/cm^(2))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/cm^(2)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。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 had 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(1534μg/cm^(2)).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/cm^(2) with the enhancement of the galvanic cell(0.3585 mW/cm^(2)).The results indicate that N-rGO/IF composite anode can be used for the design and fabrication of high-power hybrid microbial fuel cells.

关 键 词：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 

分 类 号：O614[理学—无机化学]