Results 91 to 100 of about 677,975 (315)

Reaction heat used in static water removal from fuel cells [PDF]

open access: yes, 1966
Reaction heat is used for removal of water formed at the hydrogen fuel electrode in a hydrogen-oxygen fuel cell. A portion of the heat inherent in the fuel cell current generation reaction is used to transfer excess water into water vapor and cause it to
Platner, J. L.
core   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Micro Thermocouple and Voltage Sensor for Fuel Cell Real Time Interior Monitoring

open access: yesInternational Journal of Electrochemical Science, 2014
The temperature and voltage distribution in membrane electrode assembly (MEA) importantly affect the performance of fuel cell. Conventional methods can only get the interior information of fuel cell by modeling or invasive measurement.
Chi-Yuan Lee   +3 more
doaj   +1 more source

Engineering model system study for a regenerative fuel cell: Study report [PDF]

open access: yes
Key design issues of the regenerative fuel cell system concept were studied and a design definition of an alkaline electrolyte based engineering model system or low Earth orbit missions was completed.
Chang, B. J.   +3 more
core   +1 more source

Regenerative Hydrogen-oxygen Fuel Cell-electrolyzer Systems for Orbital Energy Storage [PDF]

open access: yes, 1984
Fuel cells have found application in space since Gemini. Over the years technology advances have been factored into the mainstream hardware programs. Performance levels and service lives have been gradually improving.
Sheibley, D. W.
core   +1 more source

Alcohol Fuel Cells at Optimal Temperatures [PDF]

open access: yes, 2006
High-power-density alcohol fuel cells can relieve many of the daunting challenges facing a hydrogen energy economy. Here, such fuel cells are achieved using CsH2PO4 as the electrolyte and integrating into the anode chamber a Cu-ZnO/Al2O3 methanol steam ...
Boysen, Dane A.   +3 more
core   +1 more source

Oral Dosed Organo‐Silica Nanoparticles Restore Glucose Homeostasis and β‐Cell Function in Diabetes Rats

open access: yesAdvanced Functional Materials, EarlyView.
An oral nanoplatform, MOP@T@D, which can maintain glucose homeostasis and restore islet β cells in diabetic rats is developed. It achieves efficient intestinal absorption and liver‐targeted delivery. The nanoparticle disintegrates only in response to hyperglycemia to release insulin on demand and provides antioxidant protection through selenoprotein ...
Chenxiao Chu   +14 more
wiley   +1 more source

Study of fuel cell powerplant with heat recovery [PDF]

open access: yes
It was shown that heat can be recovered from fuel cell power plants by replacing the air-cooled heat exchangers in present designs with units which transfer the heat to the integrated utility system.
Clausi, J. V.   +2 more
core   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

In-situ Monitoring of Temperature, Flow and Pressure in Micro Methanol Reformer by Embedded Integrated Multifunction Micro Sensor

open access: yesInternational Journal of Electrochemical Science, 2013
Methanol can be used as the hydrogen source for the operation of fuel cells, given its features of safe storage and transportation management, as well as low reforming temperature (250~300°C).
Chi-Yuan Lee   +3 more
doaj   +1 more source

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