title: A Single-Use Paper-Shaped Microbial Fuel Cell for Rapid Aqueous Biosensing.
abstract: The traditional chamber-based microbial fuel cell (MFC) often has the disadvantages of high ohmic resistance, large volume requirements, and delayed start-up. In this study, paper-shaped MFCs utilizing a porous carbon anode, a solid Ag2 O-coated carbon cathode, and a micrometer-thin porous polyvinylidene fluoride (PVDF) separator are investigated to address the classical MFC issues. The Ag2 O-coated cathode has a low overpotential of 0.06 V at a reducing current of 1 mA compared to a Pt-air cathode. Rapid inoculation by filtration results in an instantaneous power density of 92 mW m(-2) with an internal resistance of 162 Ω. Integrated current over the first 30 min of operation has a linear relation with microbial concentration.
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084 (P.R. China).|School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States).
authors.forename: Kuichang
authors.initials: K
authors.lastname: Zuo
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States).
authors.forename: Han
authors.initials: H
authors.lastname: Liu
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States).
authors.forename: Qiaoying
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084 (P.R. China).
authors.forename: Peng
authors.initials: P
authors.lastname: Liang
authors.affiliation: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084 (P.R. China). xhuang@tsinghua.edu.cn.
authors.forename: Xia
authors.initials: X
authors.lastname: Huang
authors.affiliation: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States). vecitis@seas.harvard.edu.
authors.forename: Chad D
authors.initials: CD
authors.lastname: Vecitis
mesh_terms: D001674:Bioelectric Energy Sources; D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods*; D002244:Carbon / Q000737:chemistry; D004566:Electrodes; D008958:Models, Molecular; D008968:Molecular Conformation; D010087:Oxides / Q000737:chemistry; D010209:Paper; D011145:Polyvinyls / Q000737:chemistry; D016062:Porosity; D018030:Silver Compounds / Q000737:chemistry; D014867:Water / Q000737:chemistry*; D005465:Fluorocarbon Polymers
chemical_list: D002244:Carbon; D010087:Oxides; D011145:Polyvinyls; D018030:Silver Compounds; D014867:Water; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers; C040225:disilver oxide
keywords: biosensing; microbial fuel cells; separator; silver; single-use