Microparticles with high consistency and surface area per volume are fabricated.

P(DADMAC) microparticles facilitate microorganism accumulation and charge transfer.

Microbes in microparticles are capable of proliferation and electricity generation.

Microparticles increase limiting current/power output to more than 200% of biofilm.

Microparticles decrease the anode charge-transfer resistance to 44% of biofilm.