Results 11 to 20 of about 107,480 (290)

Proton Conduction Properties of Intrinsically Sulfonated Covalent Organic Framework Composites

Inorganics, 2023
The long–term stability of proton conductors is one of the most important factors in evaluating materials. Guest molecules can act as “bridges” for proton conduction channels and reside in the channels of covalent organic frameworks, but they are prone ...
Jianjian Yang, Zhihui Kong, Xinyu Li, Qinglei Guo, Zhen Wang, Zixi Kang, Rongming Wang, Daofeng Sun   +7 more
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Effect of hydrogen-bonding networks in water on the proton conductivity properties of metal–organic frameworks

Journal of Science: Advanced Materials and Devices, 2021
We study the proton conductivity properties of MOF-801. We find that MOF-801 possesses intrinsic proton carrier sites, μ3-OH groups, in clusters yielding the generation of hydrogen-bonding networks with guest water molecules at high relative humidity (RH)
My V. Nguyen, Hieu C. Dong, Duc Nguyen-Manh, Nam H. Vu, Thuat T. Trinh, Thang B. Phan   +5 more
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SPEEK and SPPO Blended Membranes for Proton Exchange Membrane Fuel Cells

Membranes, 2022
In fuel cell applications, the proton exchange membrane (PEM) is the major component where the balance among dimensional stability, proton conductivity, and durability is a long-term trail.
Muhammad Imran Khan, Abdallah Shanableh, Shabnam Shahida, Mushtaq Hussain Lashari, Suryyia Manzoor, Javier Fernandez   +5 more
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Fabrication and Characterization of Chitosan/N-Phthaloyl Composite Membrane for DMFC Application

Jurnal Riset Kimia, 2021
Modified chitosan membrane is one of the promising membranes for polymer electrolyte membrane. Chitosan/N-phthaloyl chitosan composite membranes were fabricated to obtain high proton conductivity and low methanol permeability.
Christine Dyta Nugraeni, Lukman Atmaja, Nur Hayati, Mochammad Purwanto, Mardi Santoso, Yuli Kusumawati   +5 more
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Suppression of Methanol and Formate Crossover through Sulfanilic‐Functionalized Holey Graphene as Proton Exchange Membranes

Advanced Science, 2023
Proton exchange membranes with high proton conductivity and low crossover of fuel molecules are required to realize advanced fuel‐cell technology. The selective transportation of protons, which occurs by blocking the transportation of fuel molecules ...
Samuel Jeong, Tatsuhiko Ohto, Tomohiko Nishiuchi, Yuki Nagata, Jun‐ichi Fujita, Yoshikazu Ito   +5 more
doaj   +1 more source

Role of acetyl group on proton conductivity in chitin system

Journal of Materiomics, 2019
Measurements of proton conductivity in chitin and chitosan have been carried out and proton conductivity is investigated. From the measurement of fuel cell based on the deacetylated chitin (chitosan) electrolyte, it was found that chitosan becomes the ...
Takashi Kawabata, Yasumitsu Matsuo
doaj   +1 more source

Polymer solid acid composite membranes for fuel-cell applications [PDF]

, 2000
A systematic study of the conductivity of polyvinylidene fluoride (PVDF) and CsHSO4 composites, containing 0 to 100% CsHSO4, has been carried out.
Boysen, Dane A., Chisholm, Calum R. I., Haile, Sossina M., Narayanan, Sekharipuram R.   +3 more
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Phosphoric Acid Doped Polybenzimidazole (PBI)/Zeolitic Imidazolate Framework Composite Membranes with Significantly Enhanced Proton Conductivity under Low Humidity Conditions

Nanomaterials, 2018
The preparation and characterization of composite polybenzimidazole (PBI) membranes containing zeolitic imidazolate framework 8 (ZIF-8) and zeolitic imidazolate framework 67 (ZIF-67) is reported.
Jorge Escorihuela, Óscar Sahuquillo, Abel García-Bernabé, Enrique Giménez, Vicente Compañ   +4 more
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Differences in Water Dynamics between the Hydrated Chitin and Hydrated Chitosan Determined by Quasi-Elastic Neutron Scattering

Bioengineering, 2023
Recently, it was reported that chitin and chitosan exhibited high-proton conductivity and function as an electrolyte in fuel cells. In particular, it is noteworthy that proton conductivity in the hydrated chitin becomes 30 times higher than that in the ...
Yuki Hirota, Taiki Tominaga, Takashi Kawabata, Yukinobu Kawakita, Yasumitsu Matsuo   +4 more
doaj   +1 more source

Proton and molecular permeation through the basal plane of monolayer graphene oxide

Nature Communications, 2023
Two-dimensional (2D) materials offer a prospect of membranes that combine negligible gas permeability with high proton conductivity and could outperform the existing proton exchange membranes used in various applications including fuel cells.
Z. F. Wu, P. Z. Sun, O. J. Wahab, Y. T. Tan, D. Barry, D. Periyanagounder, P. B. Pillai, Q. Dai, W. Q. Xiong, L. F. Vega, K. Lulla, S. J. Yuan, R. R. Nair, E. Daviddi, P. R. Unwin, A. K. Geim, M. Lozada-Hidalgo   +16 more
doaj   +1 more source