Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Firma Carl Freudenberg

Peter Hartwig

Werner Weppner

Winfried Wichelhaus

Holger Buchwald

Werner Schafer

A jacket for a floppy disk consists essentially of a porous nonwoven material both for a writable cover function and a soft, fibrous liner function.

Jacket for floppy disk

The present invention provides a process for the production of solid in conductor materials based on the following formula:

Process for the production of thermodynamically stable solid ion

The present invention provides compounds of the general formula:

Ion conductor material

The present invention provides a method for the manufacture of solid electrolyte layers for galvanic cells. In accordance with the method of this application, a very thin, firmly adhering, coherent layer of a lithium nitride halogenide is deposited on a substrate by virtue of atomizing the lithium nitride halogenide in a cathode sputtering system. The sputtering system is characterized by a discharge voltage of at least 300 volts and a pressure less than 1.times.10.sup.-1 mb. The system further comprises a plasma-generating gas which should be at least 55% by weight, based on the total weight of gases, helium and/or nitrogen.

Method for the manufacture of solid electrolyte layers for galvanic cells

The present invention provides a process for the production of solid ion ductor materials (electrolytes) based on lithium or sodium compounds which stand in thermodynamic equilibrium with their alkali metal and have a high decomposition voltage, wherein two or more binary lithium or sodium compounds with an anion which is formed from one or more elements of the group consisting of nitrogen, phosphorus, arsenic, oxygen, sulphur, selenium, tellurium, hydrogen, fluorine, chlorine, bromine and iodine and which stand in thermodynamic equilibrium with their alkali metal are reacted together in such amounts and for such a period of time that a radiographically phase-pure product is formed. The present invention also provides ion conductor materials based on lithium or sodium compounds, which have the general formula:

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Weinheim, Germany

Peter Hartwig