title: Enzymeless multi-sugar fuel cells with high power output based on 3D graphene-Co3O4 hybrid electrodes.
abstract: Biofuel cells (BFCs), which use enzymes as catalysts to harvest energy from green and sustainable fuels abundantly producible from biological systems, are promising next-generation energy devices. However, the poor stability and high specificity to only one fuel type of these bio-catalysts largely limits the practical use of current BFCs. In this contribution, we demonstrate a unique fuel cell which, equipped with two identical enzyme-free electrodes based on Co3O4 coated 3D graphene, is able to efficiently harvest electricity from various sweet biofuels (glucose, sucrose, or lactose). Taking advantage of the dual catalytic ability of nanostructured Co3O4 for both glucose oxidation and oxygen reduction as well as the exceptional electrical and structural properties of 3D graphene, our glucose-powered fuel cell, with good long-term stability, offers high open circuit voltage (~1.1 V) and power density output (2.38 ± 0.17 mW cm(-2)).
authors: Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.
authors: Yun
authors: Y
authors: Chen
authors: Kenath Priyanka
authors: KP
authors: Prasad
authors: Xuewan
authors: X
authors: Wang
authors: Hongchang
authors: H
authors: Pang
authors: Ruyu
authors: R
authors: Yan
authors: Aung
authors: A
authors: Than
authors: Mary B
authors: MB
authors: Chan-Park
authors: Peng
authors: P
authors: Chen
mesh_terms: D001674:Bioelectric Energy Sources; D003035:Cobalt / Q000737:chemistry*; D004566:Electrodes; D004867:Equipment Design; D005947:Glucose / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D007785:Lactose / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D013395:Sucrose / Q000737:chemistry*
chemical_list: D010087:Oxides; D003035:Cobalt; D013395:Sucrose; D006108:Graphite; D005947:Glucose; D007785:Lactose; C060728:cobalt oxide