材料科学
阴极
催化作用
氢氧化物
微生物燃料电池
石墨烯
化学工程
氧化物
基质(水族馆)
复合数
比表面积
热液循环
阳极
复合材料
化学
纳米技术
冶金
电极
有机化学
物理化学
工程类
地质学
海洋学
作者
Junfeng Chen,Jiaqi Yang,Xuemei Wang,Daoxin Yang,Muyi Yang,Jiarui Tian,Ran Tao,Yongle Wang,Qingying Wei,Renjun Wang,Yuewei Yang,Yanyan Liu
标识
DOI:10.1016/j.ijhydene.2022.03.107
摘要
In this study, a cathode catalyst for microbial fuel cells (MFCs) was successfully prepared by a simple step-by-step hydrothermal method. Graphene oxide (GO) and layered double hydroxide (LDH) composite substrate and three-dimensional covalent organic framework materials (COF-300) grown vertically on the surface were observed. (003), (006), (012), (018), (110) were the obvious crystal plane of the composite [email protected]/GO. C, O, N, Ni, Na, Al and other elements existed on the surface of the composite. The maximum power density produced by [email protected]/GO-MFC was 481.69 mW/m2, which was 1.22 times of Ti3AlC2/NiCoAl-LDH-MFC (393.82 mW/m2) and 2.21 times of Ti3AlC2-MFC (217.73 mW/m2). The maximum voltage of [email protected]/GO-MFC was 518 mV and it could remain stable within 8 days. GO was used as the substrate to improve the conductivity; LDH was used to enhance the catalytic activity and electron transfer rate; The three-dimensional bulk COF-300 attached to the surface enhanced the surface area and catalytic properties; The above jointly promoted oxygen reduction reaction of cathode, so as to improve MFC performances.
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