“…(4)(5)(6)(7) However, these electrodes suffer from carbonaceous poisoning during the oxidation process, which results in the blocking of the active site available for the reaction. (4)(5)(6)(7) Recently, research has been devoted to using nonprecious transition metal oxides such as NiO x , CoO x , and MnO x as alternative catalysts for glucose oxidation in an alkaline medium (1)(2)(3)8,9) Among the aforementioned transition metal oxides, NiO x is considered one of the most promising catalysts for glucose oxidation owing to its extremely high activity and stability as well as easy preparation in many structures. (1,3) Although tremendous effort has been devoted to replacing the conventional carbon black support materials in many electrochemical technologies, e.g., polymer electrolyte membrane fuel cells (PEMFCs) and supercapacitors with large-surface-area carbon materials such as reduced graphene oxide, CNFs, and carbon nanotubes, (1,2,(9)(10)(11)(12)(13) few studies were focused on the use of CNFs for nonenzymatic glucose electrooxidation.…”