Article
Chemistry, Physical
Maedeh Pahlevaninezhad, Elizabeth Esther Miller, Lixin Yang, Lauren Sarah Prophet, Ashutosh Singh, Thomas Storwick, Majid Pahlevani, Michael A. Pope, Edward P. L. Roberts
Summary: The use of ultrathin graphene coating on Nafion membranes significantly improves the performance of vanadium redox flow batteries, leading to higher energy efficiency (increased by 13%), power density (by 67%), and discharge capacity (by 17.5%) over 100 cycles.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hongli An, Run Zhang, Wenhao Li, Pan Li, Huidong Qian, Hui Yang
Summary: A chemically-modified Nafion membrane with aminopropyl isobutyl polyhedral oligosilses-quioxane (NH2-POSS) has been developed for vanadium redox flow batteries (VRFBs). The modified membrane shows enhanced ion selectivity, improved dimensional stability, and reduced vanadium ion crossover, resulting in higher efficiency and longer cycle life for the battery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Applied
Hyeon Jin Choi, Chulsang Youn, Seong Cheon Kim, Dasom Jeong, Sung Nam Lim, Duck Rye Chang, Jong Wook Bae, Jeasung Park
Summary: In this study, a nanoporous metal-organic framework was utilized as a membrane material for vanadium redox flow batteries to enhance the performance of conventional Nafion membranes. The addition of small amounts of an Al-based MOF with hydroxyl and sulfonic acid functional groups to the Nafion solution resulted in composite membranes with improved physicochemical properties and electrochemical performance. The proposed composite membrane showed better capacity retention and energy efficiency compared to commercial Nafion membranes, indicating potential economic advantages.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Amirreza Khataee, Hannes Nederstedt, Patric Jannasch, Rakel Wreland Lindstro
Summary: In this study, we synthesized two types of poly(p-terphenylene alkylene)s containing perfluoroalkylsulfonic acid and perfluorophenylsulfonic acid, respectively, through superacid-mediated polyhydroxyalkylations and made proton exchange membranes (PEMs) out of them. Compared to Nafion 212, the PEM with perfluorophenylsulfonic acid groups (PTPF-Phenyl-SA) showed higher ionic conductivity and eight times lower vanadium (IV) permeation rate. The VRFB based on PTPF-Phenyl-SA exhibited longer self-discharge duration, high average coulombic efficiency of 99.6%, and lower capacity fade of 0.24% per cycle compared to Nafion 212.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Jiaye Ye, Du Yuan, Mei Ding, Yong Long, Ting Long, Lidong Sun, Chuankun Jia
Summary: The Nafion/lignin composite membrane shows excellent performance in VRFB, with high conductivity, low vanadium ions permeability, and outstanding cycling stability. Compared to commercial counterparts, it exhibits higher Coulombic efficiency and energy efficiency.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Jun Su, Jiaye Ye, Zhenyu Qin, Lidong Sun
Summary: In this study, an ultrathin polytetrafluoroethylene (PTFE) film was deposited onto Nafion substrates using radio frequency magnetron sputtering to form PTFE@Nafion composite membranes. The PTFE layer improved the dimensional stability and ion selectivity of the Nafion membranes, resulting in better self-discharge property and discharge capacity retention in the VRFB single cell.
Article
Chemistry, Multidisciplinary
Sheeraz Mehboob, Ju-Young Lee, Jee Hun Ahn, Saleem Abbas, Xuan Huy Do, Jaewon Kim, Hyun-Jin Shin, Dirk Henkensmeier, Heung Yong Ha
Summary: In this study, multi-layered PANI-Nafion composite membranes with low vanadium ion permeability were successfully fabricated, which greatly improved the performance of VRFBs and preserved electric capacity almost perfectly. The fabricated membrane showed a high coulombic efficiency of 99% and an energy efficiency of 91% at 50 mA cm-2, outperforming the pristine Nafion 115 membrane. Moreover, it exhibited remarkable durability and capacity retention with a 100% discharge capacity retention over 100 cycles of charge/discharge operation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Chemical
Elias Lallo, Amirreza Khataee, Rakel Wreland Lindstroem
Summary: This study compared the performance of anion exchange membranes (AEMs) and cation exchange membranes in vanadium redox flow batteries (VRFBs). The results showed that AEMs exhibited lower vanadium crossover, but both membranes had comparable capacity losses. Aemion(TM) AEMs outperformed Nafion(R) cation exchange membranes in terms of cycling efficiency and rate performance.
Article
Engineering, Chemical
Jiwoo Lee, Jongmin Q. Kim, Hansol Ko, Inhyeok Hwang, Yoonki Lee, Kihyun Kim, Soonyong So, Siyoung Q. Choi
Summary: This study demonstrates a sub-20 nm ultrathin PFSA-g-GO/PFSA composite membrane with highly aligned ion channel morphology, which shows significant improvement in proton/vanadium ion selectivity and energy efficiency compared to traditional Nafion 211.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Y. Lei, B. W. Zhang, B. F. Bai, X. Chen, T. S. Zhao
Summary: The study introduces a transient model of VRFB with a bipolar membrane, which improves the Poisson equation to describe the Donnan effect between the two layers for a full description of charge and ion transport. Numerical results demonstrate that bipolar membranes with thin anion exchange layers exhibit higher energy efficiency at large current densities.
JOURNAL OF POWER SOURCES
(2021)
Article
Electrochemistry
Alexandros Pasadakis-Kavounis, Funda Arslan, Mads Radmer Almind, David Aili, Johan Hjelm
Summary: In this study, a series of polybenzimidazole-polyvinylchloride polymer blends decorated with different quaternary ammonium groups were investigated. The blend with 90% polybenzimidazole content and decorated with DABCO showed superior performance, including low polarization resistance, low swelling, and high stability in acidic media. This suggests that quaternary ammonium functionalized polybenzimidazole-polyvinylchloride systems are excellent candidates for modification or fabrication of thinner membranes to reduce membrane resistance without compromising vanadium blocking properties.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Physical
Jun Liu, Haorui Duan, Wenjie Xu, Jun Long, Wenheng Huang, Huan Luo, Jinchao Li, Yaping Zhang
Summary: A novel sulfonated multi-wall carbon nanotubes filler was synthesized and prepared for application in vanadium redox flow batteries. The optimized composite membrane showed improved barrier properties and selectivity, leading to higher coulombic and energy efficiencies compared to commercial Nafion 212 membrane.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Qiang Li, Qing Dong, Junnan Wang, Zhichao Xue, Jie Li, Mingfu Yu, Tianyu Zhang, Ye Wan, Hong Sun
Summary: This paper presents a reduced graphene oxide/Super-P aerogel composite electrode with controllable porous structure based on direct ink writing (DIW), which shows promising potential in vanadium redox flow battery (VRFB). The optimized electrode exhibits superior discharge capacity and energy efficiency due to its high conductivity, high specific area, and reasonable hierarchical porous structure.
JOURNAL OF POWER SOURCES
(2022)
Article
Polymer Science
Chien-Hong Lin, Ming-Yen Chien, Yi-Cih Chuang, Chao-Chi Lai, Yi-Ming Sun, Ting-Yu Liu
Summary: The addition of graphene oxide nanosheets significantly improves the mechanical properties of the PSF membrane, enhances the coulombic efficiency of the VRFB, and demonstrates long-term chemical stability.
Review
Polymer Science
Gowthami Palanisamy, Tae Hwan Oh
Summary: In recent years, vanadium redox flow batteries (VRFB) have gained significant attention due to their long cycle life, flexibility, high-energy efficiency, and reliability. Polymer membranes, such as Nafion, used in VRFB play a crucial role in proton transport and act as barriers between electrodes/electrolytes. However, the high cost and vanadium ions permeability of commercial membranes limit their commercial application. Therefore, various modified perfluorinated and non-perfluorinated membranes, including hybrid polymer composite membranes with TiO2 nanofillers, have been developed to improve the performance of VRFB.
Article
Chemistry, Physical
Daishuang Zhang, Xiaoming Yan, Gaohong He, Le Zhang, Xinhong Liu, Fengxiang Zhang, Mengmeng Hu, Yan Dai, Sangshan Peng
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
Chemistry, Multidisciplinary
Sangshan Peng, Xiaoming Yan, Xuemei Wu, Daishuang Zhang, Yongliang Luo, Lei Su, Gaohong He
Article
Engineering, Environmental
Sangshan Peng, Xuemei Wu, Songlan Sun, Wanting Chen, Min Li, Jie Li, Gaohong He
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2018)
Article
Chemistry, Physical
Sangshan Peng, Xuemei Wu, Xiaoming Yan, Li Gao, Yangzhi Zhu, Daishuang Zhang, Jie Li, Qian Wang, Gaohong He
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Chemistry, Physical
Sangshan Peng, Leyuan Zhang, Changkun Zhang, Yu Ding, Xuelin Guo, Gaohong He, Guihua Yu
ADVANCED ENERGY MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Changkun Zhang, Zhihui Niu, Sangshan Peng, Yu Ding, Leyuan Zhang, Xuelin Guo, Yu Zhao, Guihua Yu
ADVANCED MATERIALS
(2019)
Article
Engineering, Chemical
Jie Li, Qi Zhang, Sangshan Peng, Daishuang Zhang, Xiaoming Yan, Xuemei Wu, Xue Gong, Qian Wang, Gaohong He
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Engineering, Chemical
Daishuang Zhang, Qian Wang, Sangshan Peng, Xiaoming Yan, Xuemei Wu, Gaohong He
JOURNAL OF MEMBRANE SCIENCE
(2019)
Review
Chemistry, Multidisciplinary
Ping Xiong, Leyuan Zhang, Yuyue Chen, Sangshan Peng, Guihua Yu
Summary: The development of redox flow batteries (RFBs) is hindered by the lack of appropriate ion-conducting membranes, which need to have high chemical stability and good resistance to meet strict requirements. The design of membranes for RFBs is crucial, with the chemistry and microstructure associated with ion transport channels playing a key role.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yuyue Chen, Ping Xiong, Sisi Xiao, Yangzhi Zhu, Sangshan Peng, Gaohong He
Summary: This review summarizes the recent progress on PBI-based membranes for redox flow batteries (RFBs). It presents the proposed ion conductive mechanisms in acid- and alkali-doped PBI membranes from the perspective of intermolecular interactions, highlights recent efforts in improving PBI-based membranes for RFBs, and elaborates on the challenges and future perspectives in this research field.
ENERGY STORAGE MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Sangshan Peng, Qing He, Gabriela I. Vargas-Zuniga, Lei Qin, Inhong Hwang, Sung Kuk Kim, Nam Jung Heo, Chang-Hee Lee, Ranjan Dutta, Jonathan L. Sessler
CHEMICAL SOCIETY REVIEWS
(2020)
Article
Chemistry, Multidisciplinary
Leyuan Zhang, Sangshan Peng, Yu Ding, Xuelin Guo, Yumin Qian, Hugo Celio, Gaohong He, Guihua Yu
ENERGY & ENVIRONMENTAL SCIENCE
(2019)
Review
Chemistry, Physical
Changkun Zhang, Leyuan Zhang, Yu Ding, Sangshan Peng, Xuelin Guo, Yu Zhao, Gaohong He, Guihua Yu
ENERGY STORAGE MATERIALS
(2018)
Article
Chemistry, Multidisciplinary
Sangshan Peng, Xiaoming Yan, Daishuang Zhang, Xuemei Wu, Yongliang Luo, Gaohong He