The present specification relates to a block polymer and a polymer electrolyte membrane comprising the same, a membrane-electrode assembly comprising the polymer electrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polymer electrolyte membrane.

An electrolyte membrane is described that has improved bondability with a catalyst layer and that achieves good power generation performance, without the electrolyte membrane undergoing a physical treatment and without any loss of surface modification effect, where the electrolyte membrane comprises a polymer electrolyte and a nonionic fluorochemical surfactant.

polymeric ion-conducting membrane with an enhanced stability against attacks of free radicals for exteding its service time, which comprises (a) a polymer matrix, and (b) a redox stabilizer, where the redox stabilizer is attached to the polymer matrix by chemical or ligand bonding, or the redox stabilizer is physically mixed with the polymer matrix.

Disclosed herein is an electrolytic membrane with cationic ion or anionic ion conducting capability comprising crosslinked inorganic-organic hybrid electrolyte in a porous support, wherein the inorganic-organic hybrid crosslinked electrolyte is formed by chemical born formation between Linkers and Crosslinkers, wherein Linkers and/or Crosslinkers include at least one element from Si, P, N, Ti, Zr, Al, B, Ge, Mg, Sn, W, Zn, V, Nb, Pb or S.

A non crosslinked, covalently crosslinked and/or ionically crosslinked polymer, having repeating units of the general formula (1)
KR(1)
In which K is a bond, oxygen, sulfur, ##STR00001##
the radical R is a divalent radical of an aromatic or heteroaromatic compound.

A non crosslinked, covalently crosslinked and/or ionically crosslinked polymer, having repeating units of the general formula (1)
KR(1)
In which K is a bond, oxygen, sulfur, ##STR00001##
the radical R is a divalent radical of an aromatic or heteroaromatic compound.

The present invention relates to a membraneless direct-type fuel cell, which directly uses oxidizable phosphorus compound, sulphur compound or nitrogen compound as fuel.

The present invention relates to a membraneless direct-type fuel cell, which directly uses oxidizable phosphorus compound, sulphur compound or nitrogen compound as fuel.

The disclosure relates to a class of high and low phosphonated aliphatic fluoropolymer rubbers (pFKM) and perfluoropolymer rubbers (pFFKM) based on FKM and FFKM as well as the process for their preparation and their applications.

The disclosure relates to a class of high and low phosphonated aliphatic fluoropolymer rubbers (pFKM) and perfluoropolymer rubbers (pFFKM) based on FKM and FFKM as well as the process for their preparation and their applications.