Results 71 to 80 of about 69,894 (304)

Nafion-layered silicate nanocomposite membrane for fuel cell application [PDF]

open access: yes, 2004
Direct methanol fuel cells (DMFCs) using a proton exchange membrane as electrolyte is an attractive option for electricity generation. The most widely used membrane in the DMFC system is based on a perfluorinated polymer bearing sulfonic acid functions ...
Bizzari, Didier   +5 more
core   +1 more source

Radiation‐Resistant Aluminum Alloy for Space Missions in the Extreme Environment of the Solar System

open access: yesAdvanced Materials, EarlyView.
A novel ultrafine‐grained aluminum crossover alloy exhibits unprecedented radiation resistance and mechanical stability under extreme irradiation doses up to 100 dpa. The exceptional resilience arises from thermodynamically stable T‐phase precipitates, enabling lightweight structural materials for next‐generation spacecraft and extraterrestrial ...
Patrick D. Willenshofer   +9 more
wiley   +1 more source

Ni Modified MCM-41 as a Catalyst for Direct Methanol Fuel Cells

open access: yesInternational Journal of Electrochemical Science, 2014
Electrodes made from Mobil catalytic materials number 41 (MCM-41) modified with nickel were successfully prepared by mixing Ni-MCM-41 powders with conducting carbon black in an appropriate ratio.
H.B. Hassan   +3 more
doaj   +1 more source

The Entrance Effect of Pin Type Flow Channel on Direct Methanol Fuel Cells [PDF]

open access: yes
[[abstract]]This research alters the traditional single inlet/outlet opening of the pin type flow channel of direct methanol fuel cells (DMFCs). Multi-inlet/outlet openings are designed with the aim to distribute the methanol solution evenly and ...
[[corresponding]]Chen, T.-Y.   +1 more
core   +1 more source

Fabrication of Electrically Conductive, Fluid Impermeable Direct Methanol Fuel Cell (DMFC) Graphite Bipolar Plates by Indirect Selective Laser Sintering (SLS) [PDF]

open access: yes, 2008
Graphite bipolar plates are highly desirable due to their properties of high electrical conductivity and low weight but are associated with prohibitive machining costs arising from poor mechanical properties.
Alayavalli, Kaushik, Bourell, David L.
core   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

open access: yesAdvanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong   +3 more
wiley   +1 more source

Lightweight Stacks of Direct Methanol Fuel Cells [PDF]

open access: yes
An improved design concept for direct methanol fuel cells makes it possible to construct fuel-cell stacks that can weigh as little as one-third as much as do conventional bipolar fuel-cell stacks of equal power.
Narayanan, Sekharipuram, Valdez, Thomas
core   +1 more source

Biomimetic flow fields for proton exchange membrane fuel cells: A review of design trends [PDF]

open access: yes, 2020
Bipolar Plate design is one of the most active research fields in Polymer Electrolyte Membrane Fuel Cells (PEMFCs) development. Bipolar Plates are key components for ensuring an appropriate water management within the cell, preventing flooding and ...
Arredondo, C. H.   +3 more
core  

Cross-linked CoMoO4/rGO nanosheets as oxygen reduction catalyst [PDF]

open access: yes, 2017
Development of inexpensive and robust electrocatalysts towards oxygen reduction reaction (ORR) is crucial for the cost-affordable manufacturing of metal-air batteries and fuel cells. Here we show that cross-linked CoMoO4 nanosheets and reduced graphene
Fu, Jiaqi   +7 more
core   +2 more sources

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

open access: yesAdvanced Materials, EarlyView.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin   +3 more
wiley   +1 more source

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