摘要:
A fuel cell supply device that generates hydrogen for fuel cells in an aircraft includes a reaction chamber which reacts hydrogenated polysilanes or mixtures thereof with water; a feed device that feeds at least one reactant into the reaction chamber; and a discharge device that leads hydrogen formed in the reaction to a fuel cell.
摘要:
A method for producing high-purity silicon is described. SiCl4 is produced from Si02-containing starting materials in a carbochlorination process, and the high-purity silicon is obtained from said SiCl4 in further steps of the method. No elemental silicon is added in any of the steps, resulting a particularly efficient and inexpensive method.
摘要:
A process for preparing hydrogenated polygermasilane as a pure compound or mixture of compounds includes hydrogenating halogenated polygermasilane.
摘要:
A chlorinated polysilane has the formula SiClx wherein x=0.01−0.8 and which can be produced by thermolysis of a chloropolysilane at a temperature below 600° C.
摘要:
The invention relates to a method for the catalytic hydrogenation of halogenated silanes or halogenated germanes, according to which halogenated monosilanes, oligosilanes or polysilanes, or monogermanes, oligogermanes or polygermanes, are hydrogenated or partially hydrogenated with hydrogenated Lewis acid-base pairs, and the partially halogenated Lewis acid base pairs can be rehydrogenated, especially with further addition of H2 and the heterolysis thereof on the Lewis acid-base pairs, releasing hydrogen halide.
摘要:
The invention is based on the aim of developing a device and a method for the plasma-enhanced synthesis of halogenated polysilanes and polygermanes, wherein at least one reaction partner is present in a gaseous form and is excited by reactive particles from a plasma zone, and is subsequently reacted by means of at least one further reaction partner which is present in the reaction chamber in vaporous or gaseous form. Reactions of halogen silanes or germanes of the group SiCl4, SiF4, GeCl4, GeF4 with H2 are possible.
摘要:
The invention describes a process for removing nonmetallic impurities from metallurgical silicon. A melt is produced from metallurgical silicon and halide-containing silicon. As a result, the impurities are sublimed out and removed from the melt in the form of nonmetal halides. Compared with the known process, in which gaseous halogen is blown through an Si melt, the novel process can be carried out in a particularly simple and efficient manner.
摘要:
The invention relates to nanowires which consist of or comprise semiconductor materials and are used for applications in photovoltaics and electronics and to a method for the production thereof. The nanowires are characterized in that they are obtained by a novel method using novel precursors. The precursors represent compounds, or mixtures of compounds, each having at least one direct Si—Si and/or Ge—Si and/or Ge—Ge bond, the substituents of which consist of halogen and/or hydrogen, and in the composition of which the atomic ratio of substituent:metalloid atoms is at least 1:1.
摘要:
A storage material for obtaining H-silanes which is present in the form of a hydrogenated polysilane (HPS), as a pure compound or as a mixture of compounds having on average at least six direct Si—Si bonds, the substituenis of which predominantly consist of hydrogen and in the composition of which the atomic ratio of sabstitueot to silicon is at least 1:1.
摘要:
The invention relates to a method for producing fluorinated polysilanes. Hydrogen fluoride and/or hexafluorosilicic acid, which are obtained in particular during acid digestion of mineral phosphates in the production of phosphate fertilisers, are used for the production of SiF4. The SiF4 obtained is thermally or plasma-chemically converted to fluorinated polysilane. The method is particularly efficient and cost-effective.