Free‐Standing Functionalized Graphene Oxide Solid Electrolytes in Electrochemical Gas Sensors |
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| Authors: | Gaopeng Jiang Maciej Goledzinowski Felix J. E. Comeau Hadis Zarrin Gregory Lui Jared Lenos Alicia Veileux Guihua Liu Jing Zhang Sahar Hemmati Jinli Qiao Zhongwei Chen |
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| Affiliation: | 1. Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Waterloo Institute of Sustainable Energy, University of Waterloo, Waterloo, Ontario, Canada;2. Alcohol Countermeasure Systems Corp, 60 International Boulevard, Toronto, Ontario, Canada;3. College of Environment Science and Engineering, Donghua University, Shanghai, P. R. China |
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| Abstract: | A free‐standing sulfonic acid functionalized graphene oxide (fSGO)‐based electrolyte film is prepared and used in an electrochemical gas sensor, an alcohol fuel cell sensor (AFCS), for the detection of alcohol. The fSGO electrolyte film‐based AFCS detects ethanol vapor with excellent response, linearity, and sensitivity, since it possesses a high proton conductivity (58 mS cm?1 at 55 °C). An ethanol detection limit level as low as 25 ppm is achieved and high selectivity for ethanol over acetone is demonstrated. These results do not only show the promising potential of fSGO films in an electrochemical gas sensors, specifically a portable breathalyzer, but also open an alternative pathway to investigate the application of graphene derivatives in the field of gas sensors. |
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| Keywords: | electrochemical gas sensors graphene oxide proton conductivity solid electrolytes |
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