Sorption and transport properties of 2-acrylamido-2-methyl-1-propanesulfonic acid-grafted bacterial cellulose membranes for fuel cell application

► This work pioneers the exploration of bacterial cellulose-based proton-conducting membranes for DMFCs. ► An effective modification of BC membrane with high conductivity is proposed. ► The modified BC membrane exhibits exceptional methanol-inhibiting behavior. ► The AMPS10-g-BC membrane used in DMFC is advantageous to be operated under higher methanol concentration.