Results 81 to 90 of about 184,163 (321)

Nafion/PBI Nanofiber Composite Membranes for Fuel Cells Applications

open access: yes, 2010
The PBI (poly(benzimidazole)) nano-fiber thin film with thickness of 18–30 μm is prepared by electro-spinning from a 20 wt% PBI/DMAc (N, N′-dimethyl acetamide) solution. The PBI nano-fiber thin film is then treated with a glutaraldehyde liquid for 24h at
Shih-Hao Liu   +3 more
core   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

open access: yesAdvanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Hydrogen production from liquid hydrocarbon fuels for PEMFC application

open access: yes, 2006
Lack of efficient hydrogen storage intermediate has boosted the development of fuel processor or economic onsite hydrogen production techniques for application to proton exchange membrane fuel cell promptly.
Chen, Yazhong   +5 more
core   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

open access: yesAdvanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil   +14 more
wiley   +1 more source

Water management and conductivity studies in novel polymer zirconium-based membranes for PEM fuel cells

open access: yesCase Studies in Chemical and Environmental Engineering
Proton exchange membrane fuel cells (PEMFCs) are among the promising alternatives for clean energy generation, especially when hydrogen is the fuel used. Their operation is still faced with several challenges, and one of them is water accumulation in the
Tallah Magdi Ahmed   +3 more
doaj   +1 more source

Mathematical modelling of the catalyst layer of a polymer-electrolyte fuel cell

open access: yes, 2007
In this paper we derive a mathematical model for the cathode catalyst layer of a polymer electrolyte fuel cell. The model explicitly incorporates the restriction placed on oxygen in reaching the reaction sites, capturing the experimentally observed fall ...
Shah, A., Promislow, K., Kim, G.S.
core  

Performance of composite catalysts in palm oil cracking for the production of liquid fuels and chemicals

open access: yesFuel Processing Technology, 2004
A composite material containing zeolite ZSM-5 and mesoporous molecular sieve was prepared by coating ZSM-5 crystals with a layer of mesoporous molecular sieve using cetyltrimethylammonium chloride as template. The ratio of mesophase was varied from 10 to 40 wt.% and the alumina content in the mesophase was varied from 0 to 15 wt.%.
Farouq A.A Twaiq   +2 more
openaire   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

open access: yesAdvanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón   +6 more
wiley   +1 more source

Proton-Exchanged Graphite oxide-incorporated CsXH3-XPMo12O40 with High Conductivity at Intermediate Temperatures

open access: yesInternational Journal of Electrochemical Science, 2017
Proton conductors operating at a high temperature condition have attracted great attention for intermediate temperature proton exchange membrane fuel cells (PEMFCs).
Min Huang   +6 more
doaj   +1 more source

Recent Advances in Structured Catalytic Materials Development for Conversion of Liquid Hydrocarbons into Synthesis Gas for Fuel Cell Power Generators

open access: yes, 2023
The paper considers the current state of research and development of composite structured catalysts for the oxidative conversion of liquid hydrocarbons into synthesis gas for fuel cell feeding and gives more detailed information about recent advances in ...
Dmitriy Potemkin   +7 more
core   +1 more source

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