Article
Chemistry, Physical
Shubo Wang, Yuan Lin, Jian Yang, Lei Shi, Guang Yang, Xupin Zhuang, Zhenhuan Li
Summary: Composite PEMs with blend nanofibers of cellulose and UiO-66-NH2 embedded in sulfonated polysulfone matrix show high proton conductivity, low methanol permeability, and low swelling ratio. They have great potential for use as proton-conducting nanofillers in fuel cell PEMs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Paper & Wood
Iga Aleksandra Jankowska, Katarzyna Pogorzelec-Glaser, Pawel Lawniczak, Michal Matczak, Radoslaw Pankiewicz
Summary: The study successfully synthesized a new proton-conducting polymeric nanocomposite film with high electrical and thermal stability. The newly synthesized material showed the highest conductivity at 140 degrees Celsius, being four orders of magnitude higher than that of the non-functionalized matrix.
Article
Polymer Science
Qi Pei, Jianfa Liu, Hongchao Wu, Wenwen Wang, Jiaqi Ji, Keda Li, Chenliang Gong, Lei Wang
Summary: The introduction of basic groups in the polybenzimidazole (PBI) main chain or side chain is an effective approach to improve the properties of high temperature proton exchange membranes (HT-PEMs). In this study, ethyl imidazole is grafted on the side chain of PBI containing bipyridine in the main chain, resulting in a series of PBI composite membranes blended with poly(2,2'-[p-oxydiphenylene]-5,5'-benzimidazole). The results show that the introduction of imidazole and bipyridine groups enhances the proton conductivity and mechanical strength of the membranes, achieving higher output power density and tensile strength compared to the pure OPBI membrane.
Article
Nanoscience & Nanotechnology
Jie Yang, Longzhi Tong, Abdullah Saad Alsubaie, Khaled H. Mahmoud, Yanyan Guo, Lei Liu, Li Guo, Zhihua Sun, Chao Wang
Summary: This paper focuses on the preparation and fuel cell application of an organic-inorganic composite membrane. By introducing metal-organic framework as filler, the composite membrane shows enhanced peak stress intensity and proton conductivity, which can be attributed to the unique structure of the filler and the synergistic effect of amino modification.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Physical
Junghwan Kim, Kihyun Kim, Taeyun Ko, Jusung Han, Jong-Chan Lee
Summary: By using ImGO as a filler, the PBI composite membrane shows improved mechanical properties and proton conductivity compared to traditional filler GO. The compatibility of ImGO with PBI matrix is better, resulting in better overall performance of the membrane.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Polymer Science
Sadhasivam Thangarasu, Tae-Hwan Oh
Summary: Cellulose-based membranes have attracted attention as ion exchange membranes in proton exchange membrane fuel cells and alkaline fuel cells. The focus of research is on enhancing their functional properties and reducing production costs.
Article
Engineering, Chemical
Ke Liu, Xiaoqing Wei, Shu Hu, Qingquan Li, Weimin Gao, Dan Wu, Quantong Che
Summary: Carbon dots (CDs) were used to construct high temperature proton exchange membranes with multilayered microstructures, facilitating proton conduction. The CDs provided anchor points for phosphoric acid (PA) molecules, and the PVC nanofibers guided the proton conduction behavior. The presence of hydrophilic oxygenated functional groups surrounding the CDs also improved proton conduction. The (PVC/CDs/PVC)es/PA membrane showed higher proton conductivity compared to the PVC/CDs/PA membrane. Notably, the mechanical strength of the PA doped membrane was retained without microstructure expansion. Evaluation: 8/10.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Polymer Science
Rambabu Koyilapu, Suchismita Subhadarshini, Shuvra Singha, Tushar Jana
Summary: In this study, in-situ RAFT polymerization of poly(N-vinylimidazole) (PNVI) was successfully carried out in the intergalleries of Cloisite nanoclay to synthesize PNVI of different molecular weights. The PNVI modified clays were used to prepare nanocomposite membranes, with the results showing that the clay containing high molecular weight PNVI demonstrated the most effective enhancement of membrane properties.
Article
Engineering, Environmental
Margarita Ramirez-Carmona, Maria Paula Galvez-Gomez, Lina Gonzalez-Perez, Valentina Pinedo-Rangel, Tatiana Pineda-Vasquez, Dachamir Hotza
Summary: This study produced bacterial cellulose hydrogel membranes through fermentation and evaluated them as proton exchange membranes (PEMs). The effects of different culture media on the surface uniformity and formation speed of the membranes were assessed, and the membrane performance was characterized through measurements of thickness and various tests.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Engineering, Chemical
Bensheng Zhu, Yang Sui, Peng Wei, Jihong Wen, Hui Cao, Chuanbo Cong, Xiaoyu Meng, Qiong Zhou
Summary: By modifying pre-oxidized polyacrylonitrile nanofibers (PPNF) with NH2-UiO-66 (NU6), the dimensional stability and proton conductivity of PEM composite membranes were enhanced, while the mechanism of sulfuric acid-rich layer formation was revealed for the first time.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Hemraj M. Yadav, Jong Deok Park, Hyeong Cheol Kang, Jeonghun Kim, Jae-Joon Lee
Summary: A composite material consisting of cellulose nanofiber and cobalt-containing zeolite framework was prepared and showed superior electrochemical performance suitable for supercapacitor applications. The cellulose-based material has promising potential for developing electrodes for energy storage applications.
Article
Nanoscience & Nanotechnology
Nilanjan Mukherjee, Anupam Das, Tushar Jana
Summary: In this study, a simple and efficient method was developed to functionalize the surface of multiwalled carbon nanotubes (MWCNT) with precise functional polymer chains, which were covalently grafted on the surface of the MWCNT. These polymer-grafted MWCNTs were then used as nanofillers in developing proton conducting membranes with enhanced properties. The novelty of this work lies in successfully grafting a same N-heterocyclic block copolymer structure covalently on the surface of the MWCNT.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
A. Mukhopadhyay, Y. Yang, Z. Cheng, P. Luan, A. Natan, H. Zhu
Summary: This study developed a novel ion exchange membrane based on bacterial cellulose and hydrophobic copolymer, possessing high ionic selectivity and proton conductivity, along with high tensile strength and thermal stability. The vanadium redox flow battery assembled using this membrane demonstrated very high continuous cycles and energy efficiency.
MATERIALS TODAY NANO
(2021)
Review
Chemistry, Inorganic & Nuclear
Ya-Ru Liu, Yi-Yang Chen, Qi Zhuang, Gang Li
Summary: This review introduces the strategy of introducing proton-conducting MOFs with performance advantages into the PEM system and summarizes the properties of mixed-matrix membranes and PEMs formed by MOFs. It focuses on preparation strategies, stability, proton conductive properties, proton conduction mechanisms, and structure-activity relationship. The review highlights the prospects and challenges of future research.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Materials Science, Textiles
Jing Zhao, Xiangqing Duan, Di Song, Jing Jia, Ning Wang, Yangyang Jing, Quantong Che
Summary: This study proposed a novel strategy for constructing anhydrous proton conductive aramid membranes by grafting Kevlar micro-fibrils with phosphoric acid, ensuring fine performance in proton conduction processes. The introduction of PA molecules in the structure proved to be more effective in constructing conductive membranes compared to other strategies. This research shows promising potential in the preparation of membrane electrolytes and provides a facile method for developing efficient proton conductive aramid membranes.
FIBERS AND POLYMERS
(2021)
