Polyaniline/mesoporous tungsten trioxide composite as anode electrocatalyst for high-performance microbial fuel cells

► Polyaniline/mesoporous tungsten trioxide composite was used as an anode electrocatalyst of microbial fuel cells. ► The tungsten trioxide provides the anode with biocompatibility. ► The electrochemical activity of polyaniline can be improved through its combination with the tungsten trioxide. ► The composite electrocatalyst exhibits a comparable activity to platinum in microbial fuel cells.