An enhanced proton conductivity of proton exchange membranes by constructing proton-conducting nanopores using PVP-UiO-66-NH-SO3H nanoparticles

Recent advances in non-perfluorinated sulfonic acid proton exchange membranes in the energy field

“…Consequently, this enhanced both the Grotthuss mechanism and carrier transport mechanism of proton transport in the membrane. Li et al 105 prepared PVP-UiO-66-NH-SO 3 H nanoparticles (PUNSNPs) filled with SPEEK and doped with phosphoric acid (PA) groups, resulting in PA/PUNSNPs/SPEEK = 20%, exhibiting the highest proton conductivity of 350 mS cm −1 . The high conductivity is attributed to the membrane material's unique continuous nanopore structure, which facilitates high absorbance of phosphoric acid (PA) and promotes inter-chain acid–base pairing interactions.…”

“…The multi-level interaction between the sulfonic acid group and the heterocyclic structure in the SPBPEK-Ps membrane, coupled with the tunable microphase structure derived from the side proton-conductive group regulated by the copolymer composition, enhanced the proton conductivity to 125.0 mS cm −1 . The aforementioned studies by Yang 102 and Li 105 et al successfully enhanced the conduction mechanism of proton-conductive membranes through structural and compositional modifications, providing valuable guidance and reference for the development of high-performance proton exchange membranes.…”

“…109 However, it is essential to control the amount of material incorporation during the process; otherwise, the mechanical properties of the membrane may be compromised. 105 Duan et al 29 utilized a one-step modification method to incorporate inorganic nano-filled MNCS into SNF-PAEK, resulting in the formation of MNCSS@NF-PAEK membranes (Fig. 11a).…”