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Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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50/00
Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
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H01M50/40
Separators; Membranes; Diaphragms; Spacing elements inside cells
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H01M50/489
Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
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H01M50/491
Porosity
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