Fig. 1 | Nature Communications

Fig. 1

From: High-power hybrid biofuel cells using layer-by-layer assembled glucose oxidase-coated metallic cotton fibers

Fig. 1

Illustration of the metallic cotton fiber electrode-based biofuel cell. a Preparation of the metallic cotton fiber (MCF)-based cathode and the glucose oxidase (GOx)/MCF-based anode using small-molecule ligand-induced layer-by-layer assembly. At the first stage, bare cotton fiber was coated with poly(ethylenimine) (PEI, Mw ~800). b Redox process for an MCF-biofuel cell (BFC) composed of a cathode and an anode. n-MCF: (tetraoctylammonium bromide-stabilized Au nanoparticle (TOA-Au NP)/tris-(2-aminoethyl)amine (TREN))n, m-GOx: GOx/tris-(2-aminoethyl)amine (TREN)m. The redox process of MCF-BFC, the resistance (R) of the applied external load and the location of voltage (V) and current (A) measuring devices. At the anode, glucose is oxidized to gluconolactone, where the electrons are transferred from the GOx to MCF. At the cathode, electrons are transferred from MCF through the electrolyte with oxygen reduction reaction (ORR)

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