Abstract: A method for producing a cathode (1) for a battery cell, including: pre-treating a cathode active material (4) with a first covalent linker; reacting the pre-treated active material with a monomer in the presence of a solvent, thereby obtaining a cathode mixture; pre-treating a cathode current collector (2) with a second covalent linker; applying the cathode mixture to the pre-treated cathode current collector; heating the pre-treated cathode current to a temperature between 50° C. and 150° C. to remove the solvent and polymerize the monomer into an electronically conductive redox polymer (5), thereby obtaining the cathode (1); wherein the polymer (5) is covalently bonded to the cathode active material (4) and to the cathode current collector (2) through the first (6) and the second (7) covalent linker, respectively. Also a cathode (1) including a coated cathode current collector (2) and a battery cell including the cathode (1).

Abstract: A device for measuring the glucose level in living tissue has electrodes (5, 6) for being brought into contact with the specimen and a voltage-controlled oscillator (31) as a signal source for generating an AC voltage in a given frequency range. The AC voltage is applied to the electrodes (5, 6). A voltage over the electrodes is fed to a processing circuitry (37, 38), which converts it to the glucose level using calibration data. The voltage-controlled oscillator (31) has a symmetric design with adjustable gain for generating signals in a large frequency range with low distortions at a low supply voltage. The processing circuit comprises a simple rectifier network with software-based correction. The electrodes (5, 6) are of asymmetric design and optimized for biological compatibility.

Abstract: A device for measuring the glucose level in living tissue has electrodes (5, 6) for being brought into contact with the specimen and a voltage-controlled oscillator (31) as a signal source for generating an AC voltage in a given frequency range. The AC voltage is applied to the electrodes (5, 6). A voltage over the electrodes is fed to a processing circuitry (37, 38), which converts it to the glucose level using calibration data. The voltage-controlled oscillator (31) has a symmetric design with adjustable gain for generating signals in a large frequency range with low distortions at a low supply voltage. The processing circuit comprises a simple rectifier network with software-based correction. The electrodes (5, 6) are of asymmetric design and optimized for biological compatibility.

Abstract: The invention relates to a polymeric electrolyte which is part of an electrochemical reference electrode and which is used in potentiometric and amperometric sensors. The polymeric electrolyte is a hydrogel which is stable in a large pH-range and stable against organic solvents.

Abstract: The invention relates to a polymeric electrolyte which is part of an electrochemical reference electrode and which is used in potentiometric and amperometric sensors. The polymeric electrolyte is a hydrogel which is stable in a large pH-range and stable against organic solvents.