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Alkali metal

About: Alkali metal is a research topic. Over the lifetime, 22640 publications have been published within this topic receiving 291897 citations. The topic is also known as: alkali metals.


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Journal ArticleDOI
TL;DR: In this article, it is suggested that in practical nonaqueous battery systems the alkali and alkaline earth metals are always covered by a surface layer which is instantly formed by the reaction of the metal with the electrolyte.
Abstract: It is suggested that in practical nonaqueous battery systems the alkali and alkaline earth metals are always covered by a surface layer which is instantly formed by the reaction of the metal with the electrolyte. This layer, which acts as an interphase between the metal and the solution, has the properties of a solid electrolyte. The corrosion rate of the metal, the mechanism of the deposition‐dissolution process, the kinetic parameters, the quality of the metal deposit, and the half‐cell potential depend on the character of the solid electrolyte interphase (SEI).

2,331 citations

Journal ArticleDOI
TL;DR: In this article, the effect of different alkali elements in the post deposition treatment of CIGS solar cells was investigated and a diode analysis revealed an improved diode quality for cells treated-ed with heavier alkalis.
Abstract: We report on the use and effect of the alkali elements rubidium and caesium in the place of sodium and potassium in the alkali post deposition treatment (PDT) as applied to Cu(In,Ga)Se2 (CIGS) solar cell absorbers. In order to study the effects of the different alkali elements, we have produced a large number of CIGS solar cells with high efficiencies resulting in a good experimental resolution to detect even small differences in performance. We examine the electrical device parameters of these fully functional devices and observe a positive trend in the I –V parameters when moving from devices without PDT to KF-, RbF-, and eventually to CsF-PDT. A diode analysis reveals an improved diode quality for cells treat-ed with heavier alkalis. Furthermore, secondary ion mass spectrometry (SIMS) measurements reveal a competitive mechanism induced within the class of alkali elements in the CIGS absorber induced by the alkali post deposition treatment. (© 2016 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim)

1,264 citations

01 Jan 1989
TL;DR: Etude theorique de la conductivite des solides (NaCl, KCl, RbCl, LiF, NaF, NN, NaBr, NaI, KI, I, KB, KK, KBr, RBCl, NBr, NB, NCl, NaB, NaC, NC, NaD, NaE, NE, NaG, NG, NaX, NX, NaV, NaZ, NaY, NaO, NaW, NaN, N
Abstract: Etude theorique de la conductivite des solides (NaCl, KCl, KBr, RbCl, LiF, NaF, NaBr, NaI, KI, RbBr, RbI). Donnees numeriques

1,166 citations

Journal ArticleDOI
02 Jul 1999-Science
TL;DR: The high hydrogen-uptake capacity of these systems may be derived from the special open-edged, layered structure of the carbon nanotubes made from methane, as well as the catalytic effect of alkali metals.
Abstract: Lithium- or potassium-doped carbon nanotubes can absorb approximately 20 or approximately 14 weight percent of hydrogen at moderate (200 degrees to 400 degrees C) or room temperatures, respectively, under ambient pressure. These values are greater than those of metal hydride and cryoadsorption systems. The hydrogen stored in the lithium- or potassium-doped carbon nanotubes can be released at higher temperatures, and the sorption-desorption cycle can be repeated with little decrease in the sorption capacity. The high hydrogen-uptake capacity of these systems may be derived from the special open-edged, layered structure of the carbon nanotubes made from methane, as well as the catalytic effect of alkali metals.

1,086 citations

Book
31 Dec 1986
TL;DR: In this article, the authors propose a spin-orbit coupling for Harrison's theory of the diamond structure of groups III and IV of free-electron-like metals.
Abstract: Introduction.- Hydrogen and The Alkali Metals.- The Alkali Earth Metals.- The 3d Transition Metals.- The 4d Transition Metals.- The 5d Transition Metals.- Free-Electron-Like Metals of Groups III and IV.- The Diamond Structure.- Group 15 Elements: Pnictogens.- Group 16 Elements: Chalcogens.- Group 17 Elements: Halogens.- The Noble Gases.- Lanthanides.- Actinides.- Transactinides.- AI: Spin-Orbit Coupling.- AII: Modifications and Extensions to Harrison's Theory.- AIII: Alternative Structures.- AIV: Computer Programs.

1,082 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231,049
20221,985
2021311
2020397
2019462
2018440