Researchers report that wood-biochar supercapacitors can produce as much power as today's activated-carbon supercapacitors at a fraction of the cost – and with environmentally friendly byproducts. 
Read more at: http://phys.org/news/2013-10-team-forest-cheaper-greener-supercapacitors.html#jCp     

NUI Galway’s Geo-Environmental Engineering (GENE) Research Group is currently investigating the adsorption properties of biochar and other filter medias in protecting the environment from nutrient losses arisingfrom various Irish industries. Mre to come.....