Influence of CO2 on the stability of bifunctional oxygen electrodes for rechargeable zinc/air batteries and study of different CO2 filter materials

2001 ◽  
Vol 3 (3) ◽  
pp. 368-371 ◽  
Author(s):  
J.-F. Drillet ◽  
F. Holzer ◽  
T. Kallis ◽  
S. Müller ◽  
V. M. Schmidt
Keyword(s):  
Filter Materials ◽  
Oxygen Electrodes ◽  
The Stability ◽  
Zinc Air Batteries

Active Salt/Silica-Templated 2D Mesoporous FeCo-N x -Carbon as Bifunctional Oxygen Electrodes for Zinc-Air Batteries

2018 ◽  
Vol 57 (7) ◽  
pp. 1856-1862 ◽  
Author(s):  
Shuang Li ◽  
Chong Cheng ◽  
Xiaojia Zhao ◽  
Johannes Schmidt ◽  
Arne Thomas
Keyword(s):  
Oxygen Electrodes ◽  
Active Salt ◽  
Zinc Air Batteries

Water-Filter Ratio on Heat Resistance of Condensate Polishing Filter Material in Water

2014 ◽  
Vol 484-485 ◽  
pp. 141-145
Author(s):  
Yuan Chun Yu ◽  
Bai Qing Zhou ◽  
Chen Chen
Keyword(s):  
High Temperature ◽  
Influencing Factor ◽  
Filter Material ◽  
Heating Time ◽  
Exchange Capacity ◽  
Material Degradation ◽  
Water Filter ◽  
Filter Materials ◽  
The Stability ◽  
Temperature Water

In air-cooled condenser, high temperature condensing water in summer which approaching and exceed 60°C, which may result in filter materials degradation and release impurities. This paper discusses an influencing factor, water-filter ratio (soaking solution and filter quality ratio), on leachable dissolution rate and filter material degradation rate in high temperature water. The UV absorption at 254nm (A254) and the exchange capacity ware measured after heat test as composite indicators. In addition, the trends of A254 variation with heating time were measured in different water-filter ratio. The stability is probably due to the effect of water-filter ratio. This has been further borne out that, water-filter ratio increases, leachable concentration decreases exponentially and tends to a fixed value.

Active Salt/Silica-Templated 2D Mesoporous FeCo-N x -Carbon as Bifunctional Oxygen Electrodes for Zinc-Air Batteries

2018 ◽  
Vol 130 (7) ◽  
pp. 1874-1880 ◽  
Author(s):  
Shuang Li ◽  
Chong Cheng ◽  
Xiaojia Zhao ◽  
Johannes Schmidt ◽  
Arne Thomas
Keyword(s):  
Oxygen Electrodes ◽  
Active Salt ◽  
Zinc Air Batteries

scholarly journals Improved stability of reversible solid oxide cells with a nickelate-based oxygen electrode

2016 ◽  
Vol 4 (4) ◽  
pp. 1446-1453 ◽  
Author(s):  
M. A. Laguna-Bercero ◽  
H. Monzón ◽  
A. Larrea ◽  
V. M. Orera
Keyword(s):  
High Temperature ◽  
Fuel Cell ◽  
Oxygen Electrode ◽  
Solid Oxide ◽  
Oxygen Electrodes ◽  
Improved Stability ◽  
Electrode Interface ◽  
And Performance ◽  
The Stability ◽  
Fuel Cell Operation

Mixed praseodymium, cerium and gadolinium oxides (PCGO) at the electrolyte–oxygen electrode interface enhance the stability and performance of nickelate based oxygen electrodes in high temperature electrolysis and fuel cell operation modes.

Open discussion

1982 ◽  
Vol 99 ◽  
pp. 605-613
Author(s):  
P. S. Conti
Keyword(s):  
Buenos Aires ◽  
Large Mass ◽  
List Type ◽  
Common Phenomenon ◽  
Open Discussion ◽  
The Stability ◽  
Ring Nebulae

Conti: One of the main conclusions of the Wolf-Rayet symposium in Buenos Aires was that Wolf-Rayet stars are evolutionary products of massive objects. Some questions:–Do hot helium-rich stars, that are not Wolf-Rayet stars, exist?–What about the stability of helium rich stars of large mass? We know a helium rich star of ∼40 MO. Has the stability something to do with the wind?–Ring nebulae and bubbles : this seems to be a much more common phenomenon than we thought of some years age.–What is the origin of the subtypes? This is important to find a possible matching of scenarios to subtypes.

Symmetric Multistep Methods Revisited: II. Numerical Experiments

1999 ◽  
Vol 173 ◽  
pp. 309-314 ◽  
Author(s):  
T. Fukushima
Keyword(s):  
Multistep Methods ◽  
Computational Time ◽  
Integration Time ◽  
Implicit Methods ◽  
Symmetric Methods ◽  
Celestial Bodies ◽  
The Stability ◽  
Predictor Corrector ◽  
Symmetric Multistep Methods ◽  
Integration Errors

AbstractBy using the stability condition and general formulas developed by Fukushima (1998 = Paper I) we discovered that, just as in the case of the explicit symmetric multistep methods (Quinlan and Tremaine, 1990), when integrating orbital motions of celestial bodies, the implicit symmetric multistep methods used in the predictor-corrector manner lead to integration errors in position which grow linearly with the integration time if the stepsizes adopted are sufficiently small and if the number of corrections is sufficiently large, say two or three. We confirmed also that the symmetric methods (explicit or implicit) would produce the stepsize-dependent instabilities/resonances, which was discovered by A. Toomre in 1991 and confirmed by G.D. Quinlan for some high order explicit methods. Although the implicit methods require twice or more computational time for the same stepsize than the explicit symmetric ones do, they seem to be preferable since they reduce these undesirable features significantly.

Uniformity of Magnification from Different Electron Microscopes

1967 ◽  
Vol 25 ◽  
pp. 32-33
Author(s):  
Godfrey C. Hoskins ◽  
V. Williams ◽  
V. Allison
Keyword(s):  
Diffraction Grating ◽  
The Other ◽  
Carbon Replica ◽  
Electron Microscopes ◽  
The Stability

The method demonstrated is an adaptation of a proven procedure for accurately determining the magnification of light photomicrographs. Because of the stability of modern electrical lenses, the method is shown to be directly applicable for providing precise reproducibility of magnification in various models of electron microscopes.A readily recognizable area of a carbon replica of a crossed-line diffraction grating is used as a standard. The same area of the standard was photographed in Phillips EM 200, Hitachi HU-11B2, and RCA EMU 3F electron microscopes at taps representative of the range of magnification of each. Negatives from one microscope were selected as guides and printed at convenient magnifications; then negatives from each of the other microscopes were projected to register with these prints. By deferring measurement to the print rather than comparing negatives, correspondence of magnification of the specimen in the three microscopes could be brought to within 2%.

Effect of Improved ThO2 Particle Dispersion in Nickel on High-Temperature Strength

1970 ◽  
Vol 28 ◽  
pp. 444-445
Author(s):  
E. R. Kimmel ◽  
H. L. Anthony ◽  
W. Scheithauer
Keyword(s):  
High Temperature ◽  
Metal Matrix ◽  
Oxide Particle ◽  
Oxide Phase ◽  
Dislocation Motion ◽  
Particle Dispersion ◽  
High Temperature Strength ◽  
Strengthening Effect ◽  
Oxide Particles ◽  
The Stability

The strengthening effect at high temperature produced by a dispersed oxide phase in a metal matrix is seemingly dependent on at least two major contributors: oxide particle size and spatial distribution, and stability of the worked microstructure. These two are strongly interrelated. The stability of the microstructure is produced by polygonization of the worked structure forming low angle cell boundaries which become anchored by the dispersed oxide particles. The effect of the particles on strength is therefore twofold, in that they stabilize the worked microstructure and also hinder dislocation motion during loading.

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