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Green Solid Electrolyte with Cofunctionalized Nanocellulose/Graphene Oxide Interpenetrating Network for Electrochemical Gas Sensors
Author(s) -
Zhang Jing,
Jiang Gaopeng,
Goledzinowski Maciej,
Comeau Felix J. E.,
Li Kecheng,
Cumberland Timothy,
Lenos Jared,
Xu Pan,
Li Matthew,
Yu Aiping,
Chen Zhongwei
Publication year - 2017
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201700237
Subject(s) - graphene , electrolyte , materials science , cellulose , nanocellulose , oxide , vinyl alcohol , chemical engineering , membrane , electrochemistry , electrochemical gas sensor , nanofiber , conductivity , proton exchange membrane fuel cell , nanotechnology , electrode , chemistry , composite material , polymer , engineering , metallurgy , biochemistry
A cofunctionalized cellulose/graphene oxide (GO) proton‐conducting solid electrolyte with a 3D interpenetrating network structure is developed in an efficient and green strategy, and successfully applied in an electrochemical gas sensor for the detection of alcohol, namely an alcohol fuel‐cell sensor. With grafted sulfonic acid groups onto the surface of cellulose nanofibers and GO nanosheets, the membrane is endowed with proton conductivity along both the through‐plane and the in‐plane ion‐transport channels. The alcohol fuel‐cell sensor equipped with cofunctionalized cellulose/GO membrane demonstrates great responses to ethanol vapor at different concentrations, showing excellent linearity and sensitivity, as well as low ethanol‐detection limits approaching 25 ppm. This novel concept of developing a cofunctionalized cellulose/GO membrane opens a promising route for the application of ion‐conducting solid electrolyte in electrochemical devices, particularly in electrochemical gas sensors.