Poly(Dibenzothiophene-Terphenyl Piperidinium) for High-Performance Anion Exchange Membrane Water Electrolysis.
Angew Chem Int Ed Engl
; 63(34): e202405738, 2024 Aug 19.
Article
em En
| MEDLINE
| ID: mdl-38850230
ABSTRACT
The anion exchange membrane water electrolysis is widely regarded as the next-generation technology for producing green hydrogen. The OH- conductivity of the anion exchange membrane plays a key role in the practical implementation of this device. Here, we present a series of Z-S-x membranes with dibenzothiophene groups. These membranes contain sulfur-enhanced hydrogen bond networks that link surrounding surface site hopping regions, forming continuous OH- conducting highways. Z-S-20 has a high through-plane OH- conductivity of 182±28â
mS cm-1 and ultralong stability of 2650â
h in KOH solution at 80 °C. Based on rational design, we achieved a high PGM-free alkaline water electrolysis performance of 7.12â
A cm-2 at 2.0â
V in a flow cell and demonstrated durability of 650â
h at 2â
A cm-2 at 40 °C with a cell voltage increase of 0.65â
mV/h.
Texto completo:
1
Bases de dados:
MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China