New plant-growth medium for increased power output of the Plant-Microbial Fuel Cell

► Electron-acceptors in plant-growth medium negatively influence current density P-MFC. ► P-buffer in plant-growth medium hampers plant-growth. ► NH4HCO3 is suitable nitrogen-source for plant-growth and high current density. ► SO4-presence in plant-growth medium improves current density. ► Composition plant-growth medium has large influence on current density P-MFC.