Yang Zhang

TL;DR: In this article, a flexible N-spirocyclic quaternary ammonium functionalized side chain is proposed, in which hydroxyl substituted Nspirocycle cation provides active grafting site with chloromethylated polysulfone through Williamson etherification.

TL;DR: In this article, N-spirocyclic cationic side chain with novel -NH-(CH2)x-NH- spacer is proposed to promote hydrogen bond networks and flexible aggregation of ionic clusters in AEMs.

TL;DR: In this article, a novel grafting strategy is proposed to pre-remove polybenzimidazole anions by fully grafting of non-cationic ether-containing side chains, and then attaches quaternary ammonium cations to the end of pendent side chains.

TL;DR: In this paper, an ion conductive highway network is constructed in quaternized polybenzimidazole (PBI) AEMs, in which OH− could break through the hydrophobic polymer backbone by forming dense hydrogen bond networks with pyridine nitrogen (n) in PBI repeating units, and a tri-cationic/noncationic ether pendant side chain is proposed to greatly improve ionic aggregation.

TL;DR: As critical triggers, both the electron-withdrawing links and neighboring cationic groups induce and accelerate the aryl ether cleavage in the widely used anion exchange membrane as mentioned in this paper.