Review
Nanoscience & Nanotechnology
Kaiqi Wang, Zhenpeng Zhang, Su Li, Haibo Zhang, Nailin Yue, Jinhui Pang, Zhenhua Jiang
Summary: A series of side-chain-type poly(arylene ether sulfone)s were designed and synthesized to obtain anion exchange membranes with high ionic conductivity and good dimensional stability. One specific membrane, PAES-QDTPM-0.30, showed excellent conductivity and stability due to the concentration of ion clusters and the side-chain-type structure. The membranes all maintained over 82% of their conductivity after alkali treatment.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Aruna Kumar Mohanty, Young-eun Song, Jung-rae Kim, Nowon Kim, Hyun-jong Paik
Summary: The synthesized AEMs exhibited good mechanical strength and thermal stability, along with distinct hydrophobic/hydrophilic phase-separated morphology, resulting in higher conductivity and lower water uptake. The AEM materials showed superior performance compared to commercial membranes in microbial fuel cell applications, with maximum power density reaching 310 mW/m2.
Article
Polymer Science
Zhen Wang, Shu Feng Zhou, Yi Zhi Zhuo, Ao Nan Lai, You Zhong Lu, Xiao Bin Wu
Summary: In this study, adamantane groups were introduced into the anion exchange membranes for fuel cells, resulting in a comb-shaped structure. By adjusting the ratio of hydrophobic to hydrophilic segments, the membranes exhibited improved mechanical properties and ionic conductivity. The resulting membranes showed well-defined microphase separation between the hydrophilic and hydrophobic segments, leading to high ionic conductivity and excellent mechanical properties. Therefore, these membranes have great potential for application in fuel cells.
Article
Polymer Science
Hoda Shokrollahzadeh Behbahani, Husain Mithaiwala, Horacio Lopez Marques, Winston Wang, Benny D. Freeman, Matthew D. Green
Summary: We synthesized ammonium-functionalized copolymers and investigated their potential as sorbents for direct air capture (DAC) of CO2. The copolymers exhibited a moisture-mediated capture and release of atmospheric CO2, with the capacity increasing with the ion exchange capacity (IEC). When the relative humidity was increased, the samples released CO2.
Article
Chemistry, Physical
Ping-Yen Chen, Tse-Han Chiu, Jyh-Chien Chen, Kai-Pin Chang, Shih-Huang Tung, Wei-Tsung Chuang, Kuei-Hsien Chen
Summary: Poly(ether sulfone)-based anion exchange membranes containing dense quaternary ammonium cations were prepared for fuel cell applications. The membranes showed hydroxide conductivity ranging from 13 to 45 mS/cm at 80 degrees C, with properties such as water uptake, dimensional stability, and alkaline stability being controllable based on the composition of monomers used. Additionally, the membranes demonstrated improved performance compared to commercially available AEMs under the same testing conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Prem P. Sharma, Yeeun Jeon, Dukjoon Kim
Summary: Alkaline stable anion exchange membranes based on cross-linked poly(arylene ether sulfone) grafted with dual quaternary piperidine units (XPAES-DP) were synthesized. The XPAES-DP membrane showed higher ionic conductivity and tensile strength compared to linear PAES based membranes. The chemical stability and consistent ionic conductivity of XPAES-DP membrane make it suitable for anion exchange membrane fuel cell applications. The single-cell assembled with XPAES-DP membrane exhibited high power density.
Article
Engineering, Chemical
Mamta Kumari, John C. Douglin, Dario R. Dekel
Summary: A series of mechanically robust and highly conducting crosslinked anion-exchange membranes were synthesized using quaternary phosphonium-functionalized poly(ether ether ketone) (QPPEEK) as the base polymer and poly(ethylene glycol) (PEG) as the crosslinker. Among different compositions, the QPPEEK-PEG 20 membrane showed the best properties with high hydroxide conductivity, good mechanical strength, and flexibility. This crosslinked membrane was chemically stable in alkaline environment and performed well in anion-exchange membrane fuel cell applications, indicating the potential of PEEK-based membranes for such applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yunji Xie, Su Li, Jinhui Pang, Zhenhua Jiang
Summary: This study reports two types of micro-block copolymer modified anion exchange membranes (AEMs), which contain densely benzyl-N-methylpiperidinium and benzyl-trimethyl-ammonium cations, respectively. The content and arrangement of the two types of cations in the polymer backbones were the same. The microscopic morphology of the membranes and the nature of the cations resulted in two types of AEMs with different advantages in macroscopic properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Jan Wieczorek, Mathias Ulbricht
Summary: Amphiphilic PAES multiblock copolymers with quaternary ammonium groups were used as tunable barrier materials in TFC nanofiltration membranes, showing improved performance with increasing IEC while achieving a trade-off between permeability and selectivity. The membranes demonstrated stability under oxidative disinfection conditions, making them promising for water treatment applications.
Article
Chemistry, Physical
Yao Lu, Lili Liu, Na Li, Zhaoxia Hu, Shouwen Chen
Summary: Issues of unsatisfactory ionic conductivity and chemical stability of anion exchange membranes (AEMs) need to be addressed for practical fuel cell applications. This study introduces a series of flexible multi-cationic cross-linked poly(aryl ether sulfone) (CQPAES) AEMs, fabricated using designed and synthesized flexible spacers with different lengths. The CQPAES membranes exhibit improved membrane performance due to the distinct nano-phase separation morphology and well-developed ion transfer channels, which are attributed to the higher mobility and hydrophilicity of the flexible long-chain multi-cationic segments. Furthermore, the CQPAES membranes show enhanced alkali stability compared to conventional benzyl-substituted quaternary ammonium group type AEMs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Lingxin Meng, Mengchi Ju, Jingmei Xu, Xuan Chen, Pengyun Zhao, Jinxuan Lei, Tian Lan, Fenglong Chen, Ziyi Hu, Zhe Wang
Summary: In this study, fluorenyl-containing sulfonated poly(arylene ether ketone sulfone)s were synthesized and hybrid membranes with high proton conductivity and low swelling ratio were successfully prepared. By adding specific fillers, the proton conductivity and water absorption of the membranes were improved. The obtained hybrid membranes showed promising potential for application in proton exchange membrane fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Polymer Science
Yi Yang, Hoda Shokrollahzadeh Behbahani, Brian F. Morgan, Frederick L. Beyer, Alexis Hocken, Matthew D. Green
Summary: Charge-containing polymeric materials were studied for various applications. A series of thermoplastic poly(arylene ether sulfone) (PAES) copolymers with controllable charge contents were prepared. The incorporation of charge density led to a decrease in Tg and mechanical strength, indicating a plasticization effect. The absence of microphase separation in the ion-containing copolymer system further confirmed by electron microscopy and X-ray scattering. The hydrophilicity of the samples was evaluated by water uptake measurements, and the copolymers showed potential for applications requiring a balance between hydrophilicity, processibility, and thermomechanical performance.
Article
Engineering, Chemical
Wenke Xia, Yimou Yang, Xingjie Shang, Xuan Yang, Shu Wang, Feixiang Gong, Lei Wang, Xudong Wang, Xinbing Chen
Summary: In this study, a series of cardopoly(arylene ether sulfone) membranes with different physicochemical structures were prepared. These membranes exhibited high permselectivities during diffusive dialysis (DD) and electrodialysis (ED) processes. The high permselectivities were attributed to the rigid and contorted structures containing cardo groups and pendant N-cyclic QA cations, enabling the formation of unique nano ion channels. Microphase separation and the distance between the AEMs and CEMs were found to influence the ED performance of the membranes. The results suggest new designs for high-performance ED and DD membranes.
Article
Polymer Science
Joseph Jang, Min-Kyoon Ahn, Su-Bin Lee, Cheong-Min Min, Beom-Goo Kang, Jae-Suk Lee
Summary: In this study, crosslinked poly(arylene ether sulfone) AEMs containing quaternary ammonium and triazolium cations were utilized to enhance the ion exchange capacity and stability of anion exchange membranes. The water uptake and swelling ratio of the membranes were increased with the higher ion exchange capacity. Additionally, the hydroxide conductivity and membrane stability were improved by crosslinking, resulting in enhanced performance of the membranes in AEMFCs.
MACROMOLECULAR RESEARCH
(2021)
Article
Energy & Fuels
Hazlina Junoh, Juhana Jaafar, Nik Abdul Hadi M. Nordin, Ahmad F. Ismail, Mohd H. D. Othman, Mukhlis A. Rahman, Farhana Aziz, Norhaniza Yusof, Syarifah Noor S. Sayed Daud
Summary: Porous poly ether sulfone (PES) membranes were prepared using two different solvents via dry/wet non-solvent phase inversion techniques, with membranes prepared using DMAc at 3 minutes solvent evaporation time showing desirable properties for proton conduction and methanol resistance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Polymer Science
Zhaoxia Hu, Weifen Tang, Xulue Zhang, Huiping Bi, Shanshan Chen, Hui Geng, Ying Gao, Shouwen Chen
JOURNAL OF POLYMER RESEARCH
(2016)
Article
Chemistry, Physical
Zhaoxia Hu, Yao Lu, Xulve Zhang, Qi Gao, Xiaobo Yan, Shouwen Chen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Polymer Science
Qi Gao, Xueting Pan, Providence Ingabire Buregeya, Yao Lu, Xulve Zhang, Xiaobo Yan, Zhaoxia Hu, Shouwen Chen
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Polymer Science
Xuan Zhang, Zhaoxia Hu, Sha Zhang, Shouwen Chen, Shanshan Chen, Jianmei Liu, Lianjun Wang
JOURNAL OF APPLIED POLYMER SCIENCE
(2011)
Article
Engineering, Chemical
Xuan Zhang, Shanshan Chen, Jianmei Liu, Zhaoxia Hu, Shouwen Chen, Lianjun Wang
JOURNAL OF MEMBRANE SCIENCE
(2011)
Article
Chemistry, Physical
Shouwen Chen, Xuan Zhang, Kangcheng Chen, Nobutaka Endo, Mitsuru Higa, Ken-ichi Okamoto, Lianjun Wang
JOURNAL OF POWER SOURCES
(2011)
Article
Chemistry, Physical
Xuan Zhang, Zhaoxia Hu, Yanli Pu, Shanshan Chen, Jiani Ling, Huiping Bi, Shouwen Chen, Lianjun Wang, Ken-ichi Okamoto
JOURNAL OF POWER SOURCES
(2012)
Article
Polymer Science
Xuan Zhang, Zhaoxia Hu, Linqiang Luo, Shanshan Chen, Jianmei Liu, Shouwen Chen, Lianjun Wang
MACROMOLECULAR RAPID COMMUNICATIONS
(2011)
Article
Polymer Science
Shouwen Chen, Kangcheng Chen, Xuan Zhang, Ryousuke Hara, Nobutaka Endo, Mitsuru Higa, Ken-ichi Okamoto, Lianjun Wang
Article
Chemistry, Physical
Yao Lu, Xueting Pan, Na Li, Zhaoxia Hu, Shouwen Chen
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Alphonse Haragirimana, Providence Buregeya Ingabire, Yue Liu, Na Li, Zhaoxia Hu, Shouwen Chen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
Yue Liu, Yao Lu, Alphonse Haragirimana, Ingabire Providence Buregeya, Na Li, Zhaoxia Hu, Shouwen Chen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Green & Sustainable Science & Technology
Providence Buregeya Ingabire, Xueting Pan, Alphonse Haragirimana, Na Li, Zhaoxia Hu, Shouwen Chen
Article
Engineering, Environmental
Ming -Chao Zhu, Yong-Ze Lu, Shou-Wen Chen, Zhao-Xia Hu, Jing-Wei Wang, Na Li, Raymond Jian-Xiong Zeng
Summary: Carbon nano-onions were used in an anaerobic membrane bioreactor to treat chloramphenicol wastewater, effectively degrading chloramphenicol and enhancing the growth of methanogens.
CHEMICAL ENGINEERING JOURNAL
(2023)
