Knowledge gaps

The exact mechanism of how biochar accumulates or donates electrons remains unknown as well as the factors which provoke it to act as either a sink or a source of electrons.

Ways to improve biochar’s electrical conductivity are unstudied.

The mechanism of hydrogen absorption by biochar remains to be an unaddressed research question.

Relationships between double layer capacitance manifestation and the methanogenesis process in the rumen remain undetermined.

Biochar’s electrochemical properties and their overall influence on the rumen environment are still of focus of further studies.