Results 11 to 20 of about 16,135 (207)

Developing abundant rare-earth iron perovskite electrodes for high-performance and low-cost solid oxide fuel cells

open access: yesiScience
Summary: The swift advancement of the solid oxide fuel cell (SOFC) sector necessitates a harmony between electrode performance and commercialization cost. The economic value of elements is frequently linked to their abundance in the Earth’s crust.
Kai Song   +9 more
doaj   +2 more sources

Earth-Abundant Materials for Solar Hydrogen Generation [PDF]

open access: yes, 2013
A critical challenge for the 21st century is shifting from the predominant use of fossil fuels to renewables for energy. Among many options, sunlight is the only single renewable resource with sufficient abundance to replace most or all of our current ...
McKone, James Robert
core   +1 more source

Calculation and control of DC bias current distribution in an AC power system around a typical ±800 kV DC grounding electrode

open access: yesThe Journal of Engineering, 2019
When the ultra-high-voltage direct current (UHVDC) transmission system operates in a monopolar ground return mode, an enormous DC current flows into earth via the DC grounding electrode in the converter station and then comes into the AC system around ...
Fangjie Wu   +3 more
doaj   +1 more source

Analysis of the effect of explosion grounding electrode on grounding resistance reduction

open access: yesThe Journal of Engineering, 2019
Developing cracks in the soil by means of explosions in the holes, as is called the explosion grounding electrode in this study, is a very effective way to reduce the grounding resistance in the area with high resistivity soil.
Yongli Wang   +4 more
doaj   +1 more source

Research on Earth Resistivity Measuring and Modeling of HVDC Deep-Well Grounding Electrode Sites

open access: yesIEEE Access, 2020
HVDC Deep-well grounding electrode covers a small area, which effectively alleviates the problem of difficulty in selecting the site of grounding electrode.
Maoheng Jing   +7 more
doaj   +1 more source

Topological study on electrode wells of vertical grounding electrodes of UHVDC

open access: yesThe Journal of Engineering, 2019
The main body of vertical grounding electrodes of an ultra-high-voltage direct current (UHVDC) converter station is dispersed electrode wells, due to the shielding effect between electrode wells, the arrangement of which is a problem that needs to ...
Wei Chen   +5 more
doaj   +1 more source

Effect of Ground Electrodes on the Susceptibility to Damage of Customer Premises Equipment (CPE) under Impulse Conditions

open access: yesEnergies, 2022
One of the requirements for the safe operation of customer premises equipment (CPE) is an adequate grounding system as a means to divert high fault currents to the ground.
Usman Muhammad   +3 more
doaj   +1 more source

Analysis on structural parameters and electrical performance of dc deep well grounding electrode

open access: yesThe Journal of Engineering, 2019
Deep well-grounding electrodes (DWGE) have advantage of smaller occupied area, and the number of sub-ground electrodes is less than that of the vertical grounding electrodes, thus has a good development prospects.
Yun Teng   +6 more
doaj   +1 more source

Origin of electrochemical activity in nano-Li2MnO3; Stabilization via a 'point defect scaffold' [PDF]

open access: yes, 2015
Molecular dynamics (MD) simulations of the charging of Li2MnO3 reveal that the reason nanocrystalline-Li2MnO3 is electrochemically active, in contrast to the parent bulk-Li2MnO3, is because in the nanomaterial the tunnels, in which the Li ions reside ...
Caddeo, F.   +5 more
core   +1 more source

Alternative strategy for manufacturing of all-solid-state reference electrodes for potentiometry [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2015
This paper presents an alternative strategy for manufacturing solid-state reference electrodes based on particles of graphite/silver/silver chloride synthesized by electroless deposition of metallic silver and silver chloride on graphite powder.
J. C. B. Fernandes, E. V. Heinke
doaj   +1 more source

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