Results 31 to 40 of about 5,752 (206)

Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries

open access: yesMolecules, 2021
Currently, energy storage technologies are becoming essential in the transition of replacing fossil fuels with more renewable electricity production means.
Jacobus C. Duburg   +6 more
doaj   +1 more source

Greener and sustainable method for alkene epoxidations by polymer-supported Mo(VI) catalysts [PDF]

open access: yes, 2009
A polybenzimidazole supported Mo(VI) (PBI.Mo) catalyst has been prepared and characterised. The catalytic activities of the PBI.Mo catalyst in epoxidation of alkenes with tert-butyl hydroperoxide (TBHP) as an oxidant have been studied under different ...
Ambroziak, K.   +3 more
core   +2 more sources

Research progress of high temperature proton exchange membranes applied in fuel cells

open access: yesCailiao gongcheng, 2021
The fuel cell technology is a highly-efficient clean energy technology which can alleviate the power and environmental problems. Proton exchange membrane fuel cell (PEMFC) is an important type of fuel cell, of which proton exchange membrane is the key ...
SUN Peng   +6 more
doaj   +1 more source

Carbon-Nanotube-Polymer Nanofibers with High Thermal Conductivity [PDF]

open access: yes, 2013
Highly thermally conductive carbon nanotube/polybenzimidazole polymer nanofiber composites were produced by core–shell electrospinning. The in-plane thermal conductivity increased by factor of 50 for 1.94 wt.%.
Datsyuk, Vitaly   +2 more
core   +1 more source

The vertical architecture of parallel flow field high temperatures proton exchange membrane fuel cell and its effects on the consumption of reactants and products

open access: yesRevue des Énergies Renouvelables
In this paper, we investigate the efficiency and, to minimize the size of high-temperature polymer electrolyte membrane fuel cells (HT-PEMFC), the consumption and distribution of reactants O2 and H2 in channels, as well as the products of a vertical ...
Youcef Aouabdia   +2 more
doaj   +1 more source

polybenzimidazoles

open access: yes
Citation: 'polybenzimidazoles' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08888 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
Munmaya Mishra, Biao Duan
openaire   +2 more sources

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

open access: yesAdvanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He   +8 more
wiley   +1 more source

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

open access: yesAdvanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt   +11 more
wiley   +1 more source

Sulfonated PVA / PBI Based Crosslinked Composites Towards Anhydrous Proton Conductive Polymer Electrolyte Membranes for Fuel Cells

open access: yesInternational Journal of Electrochemical Science, 2012
Polymer electrolyte membrane fuel cells (PEMFCs) are being considered as highly promising future energy source due to their high-energy conversion efficiency and their ability to address the environmental concerns related to current energy production ...
Arfat Anis, S.M. Al-Zahrani
doaj   +1 more source

High‐performance conducting polybenzimidazoles nanohybrids

open access: yesPolymer Composites, 2017
The use of ionic liquids (IL) and nanoparticles in polymeric membranes is known to increase the electrochemical performance for heavy metal ions must be eliminated from water resources. In this study at first, NiFe2O4 and Fe3O4 nanoparticles were obtained using cationic surfactants cetyltrimethylammonium bromide (CTAB) at 120°C in autoclave.
I. Ozaytekin   +5 more
openaire   +3 more sources

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