In the past 20-25 years, biochar has been promoted as a valuable resource of
a carbon filler in polymer composites, sustainable agriculture, and environmental
quality protection given its improved porous structure and electrochemical properties in
comparison to other carbon-based materials. Recent works focusing on biochar and
biochar-based nanocomposites are highlighting such properties and are even enhanced
with nanotechnology. The higher porosity attributed to biochar is highlighted along
with its great electrochemical properties able to retain nutrients for longer and favors
their slow release. The use of biochar as a filler material to improve the electrical
conductivity properties of polymers and the emphasis on various parameters, such as
pyrolysis temperature, the type of feedstock, and compaction pressures on the electrical
conductivity of the resultant composites are discussed.
Keywords: Biochar, Electrical Conductivity, Polymer Composites, Percolation, Organic Conductors.
