Green Solid Electrolyte with Cofunctionalized Nanocellulose/Graphene Oxide Interpenetrating Network for Electrochemical Gas Sensors

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...