Electrode capable of storing hydrogen and a method for the production of the same
AssigneeDeutsche Automobilgesellschaft mbH
InventorsGabor Benczur-Uer-Moessy, Detlef Ohms, Dagmar Nowak
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Abstract
An electrode and a method of manufacturing an electrode with a capacity to store hydrogen, has a metallic substrate material to which an active compound is applied. The active compound is obtainable from a paste which comprises a dry fraction and a liquid fraction. The dry fraction comprises a mixture of a pulverulent storage alloy for hydrogen, soot and polytetrafluoroethylene (PTFE), the particles of the storage alloy being covered with PTFE in the manner of fibrils; and the liquid fraction comprising a mixture of water and a higher alcohol which has from 3 to 6 C atoms.
Claims19
An electrode with capacity to store hydrogen, comprising:
- a metallic substrate material;
- and
- an active compound applied to the substrate material;
- wherein,
- the active compound is fabricated from a paste comprising a dry fraction and a liquid fraction;
- the dry fraction comprises a mixture of particles of hydrogen storage alloy, soot and polytetrafluoroethylene (PTFE);
- the particles of the hydrogen storage alloy are covered with PTFE in the manner of fibrils;
- and
- the liquid fraction comprising a mixture of water and a higher alcohol which has from 3 to 6 C atoms.
A method for producing an electrode with capacity to store hydrogen, comprising:
- a metallic substrate material;
- and
- an active compound applied to the substrate material;
- wherein,
- the active compound is fabricated from a paste comprising a dry fraction and a liquid fraction;
- the dry fraction comprises a mixture of particles of hydrogen storage alloy, soot and polytetrafluoroethylene (PTFE);
- the particles of the storage alloy are covered with PTFE in the manner of fibrils;
- and
- the liquid fraction comprises a mixture of water and a higher alcohol which has from 3 to 6 C atoms, said method comprising:
- preparing a dry fraction comprising a mixture of particles of hydrogen storage alloy, soot and polytetrafluoroethylene (PTFE);
- preparing a liquid fraction comprising a mixture of water and a higher alcohol which has 3 to 6 C atoms;
- mixing the dry fraction and the liquid fraction in a kneading machine until a cohesive paste is formed;
- coating the resulting paste on the metallic substrate;
- and
- drying the paste.
A negative electrode in an alkaline storage battery with positive nickel oxide electrode, said electrode having a capacity to store hydrogen, and comprising:
- a metallic substrate material;
- and
- an active compound applied to the substrate material;
- wherein,
- the active compound is fabricated from a paste comprising a dry fraction and a liquid fraction;
- the dry fraction comprises a mixture of particles of hydrogen storage alloy, soot and polytetrafluoroethylene (PTFE);
- the particles of the storage alloy are covered with PTFE in the manner of fibrils;
- and
- the liquid fraction comprising a mixture of water and a higher alcohol which has from 3 to 6 C atoms.
Dependencies are inferred from the claim text.