Article
Chemistry, Physical
Dawei Dong, Yafei Xiao, Minghua Zhang, Zhaojie Yang, Ke Wang, Minmin Fan
Summary: AEMs with regionally dense ion clusters were prepared by crosslinking QPSU with QBPEI. Among them, QPSU/QBPEI-3 AEM exhibited the best performance, with good ionic conductivity and stability at high temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Shuaijun Yu, Jiajie Zhu, Junbin Liao, Huimin Ruan, Arcadio Sotto, Jiangnan Shen
Summary: The trimethylamine quaternized crosslinked anion-exchange membranes prepared using an ultraviolet cross-linking method showed lower water uptake, improved mechanical stability, and higher tensile strength, making them suitable for enhancing electrodialysis efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Juanjuan Han, Wenfeng Song, Xueqi Cheng, Qiang Cheng, Yangyang Zhang, Chifeng Liu, Xiaorong Zhou, Zhandong Ren, Meixue Hu, Tianshu Ning, Li Xiao, Lin Zhuang
Summary: The study highlights the impact of different types of cations on AEMs performance, emphasizing the need to select suitable backbones to match the cations for improved membrane performance.
Article
Chemistry, Physical
Yi-cun Zhou, Rui-Ying Bao, Zhengying Liu, Ming-Bo Yang, Wei Yang
Summary: A polyketone resin-based anion exchange membrane was synthesized and processed using electrospinning and hot pressing techniques, demonstrating high ionic conductivity and mechanical properties. The electrospun membrane shows potential in various electrochemical devices under alkaline conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Chemical
Ruoxi Ma, Yufeng Kang, Tao Wang, Tao Jiang, Hao-yan Yin, Chao Liu, Haibing Wei, Yunsheng Ding
Summary: This article reports a simple design strategy that improves the conductivity of anion exchange membranes by modifying the backbone structure. By introducing dimethylfluorenylene units, the chain packing behavior and free volume of the membrane can be modulated. The optimized membrane, PFTPA-81, exhibits high ion conductivity, proper water absorption, and excellent alkaline stability. A fuel cell prototype made from PFTPA-81 achieved a high peak power density and demonstrated good durability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Yan Wang, Xiaoqin Qiao, Min Liu, Lei Liu, Nanwen Li
Summary: The effect of modifying polybenzimidazole anion exchange membranes with ?NH- was investigated, resulting in significantly improved hydroxide conductivity when cationic side chains were grafted onto the backbone. Ionic interactions between fixed cations and benzimidazolide rings were confirmed by chemical analysis, leading to enhanced membrane stability and fuel cell performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Jince Thomas, Bejoy Francis, Sabu Thomas, Alex Schechter, Flavio Grynszpan
Summary: This study presents a convenient method for fabricating robust anion exchange membranes using triazatriangulenium carbocation as the main component. The morphological analysis confirmed a phase separation casting process and the smooth transport of hydroxide anions with low activation energy value, substantial ion conductivity, and good ion exchange capacity in the membranes. The high stability of the carbocation contributes to the retention of membrane conductivity over time, making it a promising model for stable charge carriers in alkaline exchange membranes for electrochemical applications.
SOLID STATE IONICS
(2021)
Article
Green & Sustainable Science & Technology
C. Simari, M. H. Ur Rehman, A. Capri, I. Gatto, V. Baglio, I. Nicotera
Summary: 'Green' hydrogen production using anion exchange membrane (AEM) water electrolysis is a promising approach to address the energy crisis. In order to achieve commercially viable hydrogen generation, improvements in AEM technology, including membrane stability, operating temperature, ion conductivity, power performance, and cost reduction, are essential.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Materials Science, Multidisciplinary
Dawei Dong, Minghua Zhang, Yafei Xiao, Zhaojie Yang, Ke Wang, Minmin Fan
Summary: In this study, QBPEI@N-GQDs were introduced into the QPSU polymer matrix to prepare QQ-n-N-GQDs composite AEMs. The composite membranes showed improved performance due to the formation of a hydrophilic/hydrophobic microphase separation structure, resulting in higher water uptake, swelling ratio, ionic conductivity, and maximum power density of single fuel cell.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Energy & Fuels
Kai Yang, Hongzhe Ni, Xinming Du, Tianen Shui, Hongcheng Shen, Jingmei Xu, Yao Liu, Chenyang Li, Yepeng Gao, Zhe Wang
Summary: By preparing and analyzing the properties of poly (aryl ether ketone) based cross-linked anion exchange membranes, the study confirmed that the membrane has excellent conductivity and stability in alkaline fuel cells, providing new possibilities for the development of alkaline fuel cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Characterization & Testing
Lilian Olvera, Eugenia Aldeco-Perez, Arturo Rico-Zavala, Luis G. Arriaga, Jose A. Avila-Nino, Jorge Cardenas, Ruben Gavino, Karina S. Perez, Victor H. Lara
Summary: Novel anion exchange membranes with different cationic side chain lengths were synthesized and functionalized, showing high conductivity and stability for potential use in fuel cells and other electrochemical devices.
Article
Engineering, Chemical
Andrit Allushi, Thanh Huong Pham, Patric Jannasch
Summary: This study focused on developing anion exchange membranes (AEMs) with high alkaline stability and hydroxide conductivity by functionalizing fluorene units with dual pairs of quaternary piperidinium cations. The AEMs with bisPip side chains demonstrated superior conductivity and alkaline stability compared to AEMs with monoPip cations per fluorene unit, highlighting the advantage of locally concentrating the cations in the polymer structure.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Minhui Liang, Jinwu Peng, Kaiyue Cao, Cengliang Shan, Zhenchao Liu, Peng Wang, Wei Hu, Baijun Liu
Summary: By grafting bulky and hydrophilic beta-cyclodextrin onto a poly(phenylene oxide), a new family of high-performance polymer electrolytes for anion exchange membranes was developed. These membranes exhibited higher conductivity, suitable water uptake and swelling ratio, improved alkaline stability, and better cell performance compared to reference membranes. The incorporation of functional cyclodextrin groups also led to a threefold increase in power density, demonstrating an effective synthetic strategy for preparing high-performance anion exchange membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Polymer Science
Qun-Gao Chen, Ming-Tsung Lee
Summary: This study investigated the behavior of polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene (SEBS) triblock copolymers functionalized with butyl quaternary ammonium groups and alkyl side chains of different lengths. The hydrated membrane morphology was modeled and it was found that introducing alkyl side chains enhanced ion conductivity. The length and positioning of the side chains had a significant impact on the membrane morphology.
Article
Chemistry, Physical
Balakondareddy Sana, Anupam Das, Tushar Jana
Summary: The development of efficient alkaline anion exchange membranes (AAEMs) is important. Cross-linking the polybenzimidazole chains (PyPBI) can improve the physical properties of the polymer, especially the hydroxide ion conductivity, alkaline stability, and mechanical stability.
ACS APPLIED ENERGY MATERIALS
(2022)
