Open AccessEffect of Different Quaternary Ammonium Groups on the Hydroxide Conductivity and Stability of Anion Exchange Membranes
Author(s) -
Muhammad Imran Khan,
Xiaofang Li,
Javier Fernández-García,
Mushtaq Hussain Lashari,
Aziz ur Rehman,
Noureddine Elboughdiri,
Lioua Kolsi,
Djamel Ghernaout
Publication year - 2021
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.0c05134
Subject(s) - membrane , hydroxide , ion exchange , ammonium hydroxide , conductivity , alkaline fuel cell , fourier transform infrared spectroscopy , chemistry , ammonium , materials science , chemical engineering , nuclear chemistry , inorganic chemistry , polymer chemistry , ion , organic chemistry , biochemistry , engineering
Anion exchange membrane fuel cells (AEMFCs) are encouraging electrochemical structures for the competent and complaisant conversion of energy. Herein, the development of brominated poly(2,6-dimethyl phenylene oxide) (BPPO)-based anion exchange membranes (AEMs) with different quaternary ammonium groups for AEMFCs was reported. The successful preparation of AEMs was proved by utilizing proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. They were explored in terms of water uptake ( W R ), ion exchange capacity (IEC), hydration number (λ), linear swelling ratio (LSR), morphology, tensile strength (TS), and elongation at break ( E b ). The alkaline stability of the prepared AEMs was assessed and compared with each other. The experimental outcomes demonstrated that the N -methylpyrrolidinium-based membrane (MPyPPO) exhibited higher alkaline stability, whereas the N -methylimidazolium-based membrane (MImPPO) showed the lowest alkaline stability among the prepared AEMs. Similarly, the hydroxide conductivity of the prepared AEMs was measured and compared with each other. The pyrrolidinium-based membrane (MPyPPO) exhibited higher hydroxide conductivity among the prepared AEMs.