Electrically conductive polymer adhesives with complex dimensional filters

An electrically conductive polymer comprising:

• from about 5 vol % to about 15 vol % of at least one conductive metal filler material comprising silver flakes having a first aspect ratio of from about 1 to about 10 and a particle size of from about 1 μm to about 1000 μm;
• from about 0.001 wt % to about 8 wt % of one or more carbon-based filler material comprising at least one of multi-walled carbon nanotubes having a second aspect ratio of from about 1000 to about 108 and a particle size of from about 1 to about 50 nm and an edge-functionalized exfoliated natural graphite having a third aspect ratio of from about 1000 to about 108 and a particle size in a shortest dimension of from about 0.3 nm to about 20 nm;
• and
• from about 75 vol % to about 95 vol % of a polymer matrix selected from the group consisting of polydimethylsiloxane, epoxies, polyacrylates, polymethacrylates, polyurethanes, and combinations thereof;
• wherein said conductive metal filler material comprising silver flakes and said at least one of multi-walled carbon nanotubes or edge-functionalized exfoliated natural graphite are substantially homogeneously distributed throughout said polymer matrix, and
• wherein said second or third aspect ratio is at least 10 times larger than said first aspect ratio.