I'm doing my master master thesis on microbial fuel cells, and I'm facing a problem with finding suitable electrodes.
From literature I found that the following materials are the best materials that satisfies my goals, but I don't know a source that I can get them from except online shop that will take long time due to charge obstacles in my country: graphite rods, graphite brushes, carbon cloth, carbon paper, carbon felt and reticulated vitreous carbon.