Method for preparing composite flexible graphite material
AssigneeAdvanced Energy Technology Inc.
InventorsRobert Angelo Mercuri, Jeremy Klug, Matthew George Getz, Thomas William Weber
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Abstract
An improved method enables preparation of articles for a variety of applications, including embossing or otherwise shaping to form a variety of articles. A plurality of thin, preferably resin-impregnated, flexible graphite sheets are arranged to form zones in a composite material having a graded density or other characteristic. Variation of properties between zones in the stock material formed is useful for achieving a desired set of properties in the formation of articles such as those useful in electrochemical fuel cells and double-layer capacitors.
Claims11
A process for preparing an embossed graphite sheet, comprising a plurality of sheets of compressed particles of exfoliated graphite, wherein at least one of said plurality of sheets has a density at least about 5% higher than at least one other of said plurality of sheets, comprising;
- placing a first sheet of compressed particles of exfoliated graphite in contact with at least one other sheet of compressed particles of exfoliated graphite having a characteristic different from said first sheet to form a composite;
- subjecting the composite to consolidating pressure to form a consolidated composite;
- and
- embossing the consolidated composite to provide at least one shaped surface.
Dependencies are inferred from the claim text.