Synthesis and characterization of main-chain type polyimidazolium-based alkaline anion exchange membranes

Interaction Regulation Between Ionomer Binder and Catalyst: Active Triple‐Phase Boundary and High Performance Catalyst Layer for Anion Exchange Membrane Fuel Cells

“…[ 59 ] All the calculations were operated by double numerical plus polarization (DNP) and generalized gradient approximation with BLYP function (GGA‐BLYP) basis set. [ 60 , 61 ]…”

“…[59] All the calculations were operated by double numerical plus polarization (DNP) and generalized gradient approximation with BLYP function (GGA-BLYP) basis set. [60,61] To explore the adsorption energy calculations, the electronic structure calculations were performed using the Cambridge serial total energy package program module (CASTEP). [62] The simulated Pt (111) catalyst surface was modeled utilizing four layers of metal atoms with the dimensions of 16.62 × 16.65 Å and an additional vacuum region of 20 Å, resulting in 192 metal atoms in each unit cell.…”

Poly(ionic liquid)‐Based Energy and Electronic Devices

“…While the AEMs based on poly(1‐dodecyl‐2‐phenyl‐ 4,5‐dimethyl‐imidazolium exhibited the best alkaline stability in strong base solution at 80°C, indicating the promising practical application of main‐chain type AEMs in alkaline fuel cells. [ 37 ] Main‐chain type pyrrolidinium polymers were further prepared. The results showed that the cation charge density of the pyrrolidinium compounds was positively correlated to the alkaline stability, while the long spacer between adjacent pyrrolidinium cations was negatively correlated to the alkaline stability, increasing spacer between adjacent pyrrolidinium cations would accelerate the degradation of the cations (Figure 2).…”

“…As for aprotic solvent, the SN2 degradation reaction of "naked" organic cations would be accelerated. [36] Figure 1 Photograph and chemical structure of the produced AEM. Isosurface and LUMO energy of the synthesized imidazolium cations.…”

Improvement the hydroxide conductivity and alkaline stability simultaneously of anion exchange membranes by changing quaternary ammonium and imidazole contents

“…[7][8][9][10][11] There are many kinds of fuel cells, among which anion exchange membrane fuel cells (AEMFCs) have the advantages of non-precious metal as catalyst, low fuel permeability, flexibility of fuel and corrosion resistance of electrodes. [12][13][14][15][16] Therefore, it has attracted the attention of scientists all over the world, and it has broad application prospect. [17][18][19] AEMs are the core material of AEMFCs, and its properties directly affect the properties of AEMFCs.…”