Article
Biochemistry & Molecular Biology
Takeru Wakiya, Manabu Tanaka, Hiroyoshi Kawakami
Summary: Novel nanofiber framework (NfF)-based composite membranes composed of phytic acid (Phy)-doped polybenzimidazole nanofibers (PBINf) and Nafion matrix electrolyte were fabricated through the compression process, showing higher proton conductivity and lower activation energy at low relative humidity.
Article
Chemistry, Inorganic & Nuclear
Kai-ming Zhang, Yu-ling Lou, Feng-yun He, Hai-bao Duan, Xin-qi Huang, Ying Fan, Hai-rong Zhao
Summary: The synthesized 1D open framework inorganic-organic hybrid metal phosphate compound showed high stability in storage, aqua and thermal conditions, as well as significant temperature and humidity dependent proton conductivity. It can be potentially used for proton conducting materials research.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Yue Zhao, Hongbin Liu, Xianhe Meng, Anmin Liu, Yun Chen, Tingli Ma
Summary: Solid electrolytes show promise as alternatives to liquid electrolytes for lithium/sodium ion batteries, but suffer from low ionic conductivity and poor interface properties. By constructing a porous 3D network structure and optimizing the electrolyte, the researchers were able to enhance the ion conductivity and form a stable interface, resulting in improved battery performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Physical
Xinrun Yu, Jun Ma, Chunbo Mou, Guanglei Cui
Summary: With the increasing demand for safe and high energy density energy storage systems, solid-state lithium metal batteries have attracted extensive attention. In this paper, the progress on high lithium-ion conductive organic-inorganic composite electrolytes is summarized, and the importance of vertically aligned inorganic fillers for enhancing the ion conductivity is highlighted. This research is of great significance for the development of high-performance solid-state lithium metal batteries.
ACTA PHYSICO-CHIMICA SINICA
(2022)
Article
Polymer Science
Alexandra I. Cernencu, Andreea I. Dinu, Sorina Dinescu, Roxana Trusca, Mircea Istodorescu, Adriana Lungu, Izabela C. Stancu, Horia Iovu
Summary: In tissue engineering, the selection of a suitable biomaterial is crucial for tissue regeneration. This study developed a hydrogel composed of gelatin and a pectin derivative, and utilized inorganic/biopolymer hybrid filling for double-reinforcement. The dual cross-linking strategy was employed to create innovative scaffolding materials.
Article
Chemistry, Physical
Shingo Ohta, Hiroshi Nozaki, Liang Wang, Hongfei Jia, Nikhilendra Singh, Timothy Arthur, Daniel Hashemi, Hideo Iizuka
Summary: Inorganic solid ion conductors are important electrolytes for high-performance lithium-ion batteries and fuel cells. Previously developed inorganic ion conductors from natural minerals have low conductivity due to strong bonding between mobile ions and anions. In this study, a two-dimensional van der Waals inorganic proton conductor with higher conductivity by inserting protons into halogen vdW layers is presented. This provides a new pathway for the development of high-performance LIBs and FCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Md Abdul Aziz, Sangaraju Shanmugam
Summary: In this study, a Nafion/TiZrO4NT composite membrane was proposed for H-6[CoW12O40] RFB, achieving higher proton conductivity and ion selectivity, as well as higher discharge capacity, voltage efficiency, and energy efficiency. Furthermore, the composite membrane improved battery cycling efficiency and open-circuit voltage.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
M. Raja Pugalenthi, Konlayutt Punyawudho, M. Anbu Arasi, A. A. Shah, M. Ramesh Prabhu, M. Kouthaman, K. Velsankar, R. Gayathri
Summary: The electrospinning approach is used to fabricate dense continuous sulfonated poly (ether ether ketone) nanofiber mat, which is then impregnated with SPEEK solution to construct pore filled composite membranes for proton exchange membranes fuel cells. The suitable control of voltage, viscosity, flow rate, and collector distance is critical for obtaining a uniform dense fiber structure without bead formation. The embedded nanofibers improve the properties of the composite membranes, indicating their potential as materials for PEMFC.
Article
Green & Sustainable Science & Technology
Qingting Liu, Xiaohe Wang, Xiaoxiao Zhang, Zhiwei Ling, Wenzhuo Wu, Xudong Fu, Rong Zhang, Shengfei Hu, Xiao Li, Feng Zhao, Xujin Bao
Summary: Polyethyleneimine-filled sepiolite nanorods (PEI@SNR)-embedded poly(2,5-benzimidazole) composites (ABPBI/PEI@SNR) were synthesized to enhance the proton conductivity and stability of proton-exchange membrane fuel cells (PEMFCs). The composite membranes showed improved thermal stability and achieved high proton conductivities from room temperature to 200 degrees C. The cell performance of the composite membrane-based PEMFCs was significantly better than previously reported zeolite-embedded membranes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Physical
Sahng Hyuck Woo, So Young Lee, Young-Gi Yoon, Arnaud Rigacci, Jung-Je Woo, Christian Beauger, Hyoung-Juhn Kim
Summary: The incorporation of nanoclays into polymer matrixes improves the performance of proton exchange membranes (PEMs) in proton exchange membrane fuel cells (PEMFCs), especially at high temperatures and low relative humidity (RH). Nanoclays also enhance the mechanical properties and reduce the cost of composite membranes.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Shu-Hui Liu, Kun-Yan Lee
Summary: By synthesizing a proton exchange membrane (PEM) with low oxygen diffusivity and high proton conductivity through the production of composite membranes using different polyvinyl alcohol (PVA) and conductive carbon black (CCB) ratios, we were able to significantly enhance the PEM properties. The optimal concentrations of PVA and CCB were determined to be 10.04% and 0.82 m(3) g(-1) respectively, leading to a 20-fold increase in proton conductivity (PC) compared to unmodified PEM. Additionally, applying the modified PEM to a biotrickling filter-MFC (BTF-MFC) improved the removal efficiency of gaseous acetone to over 97%.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Kyungwhan Min, Abu Zafar Al Munsur, Sae Yane Paek, Soomin Jeon, So Young Lee, Tae-Hyun Kim
Summary: By coating N-doped carbon quantum dots (CQDs) with hydrophilic functional groups on Nafion-212 membrane, the morphology and ionic conductivity of the membrane are improved and hydrogen permeability is reduced. The Nafion membrane coated with 0.75 wt % of N-doped CQD (CQD-cNafion-0.75) exhibits better mechanical properties, higher oxidation stability, higher ionic conductivity of 240.3 mS cm-1 at 80 degrees C, and a reduction in hydrogen permeability (about 10%) compared to Nafion-212. In addition, the performance of single-cell PEMWE using the CQD-cNafion-0.75 membrane is approximately 1.2 times higher than Nafion-212.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Y. H. Wan, J. Sun, H. R. Jiang, X. Z. Fan, T. S. Zhao
Summary: The development of a composite PBI membrane, with a dense but thin PBI layer and a porous but thick layer made of electrospun nanofibers, exhibits higher energy efficiency and better stability compared to traditional PBI membranes, making it a promising alternative for vanadium redox flow battery applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Chemical
Kyu Ha Lee, Ji Young Chu, Ae Rhan Kim, Hwan Gyu Kim, Dong Jin Yoo
Summary: The study fabricated QPAEK/f-TiO2 composite membranes with varying contents of f-TiO2, and characterized their structure using different techniques. The addition of f-TiO2 enlarged the ion cluster and increased ion conductivity, with the maximum ion domain size and conductivity observed at 5wt% filler content.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Yongsheng Xia, Yan Wang, Lan Xiao, Yunhao Yu, Jinghui Ji, Yu Xia, Kai Qu, Kang Huang, Weihong Xing, Zhi Xu
Summary: This study successfully developed hybrid membranes with high ion selectivity and conductivity by incorporating functional molecular cross-linked two-dimensional zeolite nanosheets into a polymer matrix. These membranes show impressive performance in electrochemical energy conversion and storage devices.
