Sewage sludge biochar as an efficient catalyst for oxygen reduction reaction in an microbial fuel cell

Recent advances in utilization of biochar

“…Yuan et al [69] built an air cathode with a catalytic layer that coated both sides of a wet-proofed carbon cloth for a microbial fuel cell. The catalytic layer was comprised of sewage sludge-derived biochar or Pt/C (as comparison).…”

Cellulose-derived nitrogen and phosphorus dual-doped carbon as high performance oxygen reduction catalyst in microbial fuel cell

“…Recently, some low-cost carbon materials had been developed for ORR catalysts in MFCs and showed efficient ORR electrocatalytic activities, such as activated carbon (AC), [10][11][12][13] biochar derived from sewage sludge. [14] However, the performances of the AC catalysts were varied with the preparing methods and raw materials, the biochar catalyst was likely to contain undefined components, such as pathogens and heavy metals, and would bring secondary pollution to the environment.…”

Nonactivated and Activated Biochar Derived from Bananas as Alternative Cathode Catalyst in Microbial Fuel Cells

“…Recently, carbon nanotubes (CNTs) [8, 9], carbon power [10], biochar [11], and activated carbon [12, 13] have been reported as promising cathode catalysts for fuel cell applications due to their high chemical stability, good electric conductivity, and enhanced mass transport capability. The power densities achieved from these cathodes were comparable to that from Pt cathodes, and the high ORR activity was attributed to the doping of electron-rich nitrogen to the carbon materials.…”