CARBON FIBRIL AGGREGATES

摘要

In one aspect, a fibril aggregate that includes a multiplicity of carbon fibrils whose longitudinal axis have substantially the same relative orientation, each of the fibrils characterized as having graphitic layers that are substantially parallel to its longitudinal axis and being free of a continuous thermal carbon overcoat and a method for preparing such aggregates. In another aspect, an improved battery (10) having an anode (12), a cathode (14) that includes a chemically reducible material into which is incorporated an amount of electrically conductive carbon microfibers sufficient to enhance the electrical conductivity of the chemically reducible material and an electrolyte. In another aspect, an improved electrochemical cell having a catalytic electrode on which an electrochemical reaction occurs which has incorporated therein carbon microfibers having diameters less ~ n 0.1 micron in an amount sufficient to enhance the electrical conductivity of the electrode.