Power generation using adjustable Nafion/PTFE mixed binders in air-cathode microbial fuel cells.
Nafion, poly(tetrafluoroethylene) (PTFE) and polymers made of Nafion-PTFE mixture (Nafion and PTFE ratios of 1:2 and 2:1) were examined as catalyst binders in air-cathode microbial fuel cells (MFCs). MFC tests showed that the maximum power density (from 549 to 1060 mW/m2) increased with the increase of Nafion percentage in binders (from 0% to 100%). Multi-cycle tests (25 cycles) showed that the maximum voltages decreased by 4-6% with simultaneous increase in Coulombic efficiency in all MFCs using various binders (from 20% to 29% with Nafion binder; from 17% to 26% with other binders), indicating that adjustable Nafion/PTFE mixed polymers were applicable in MFCs as catalyst binders when considering both cost and performance of cathodes.
Wang
Xin
X
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin 150090, China.
Feng
Yujie
Y
Liu
Jia
J
Shi
Xinxin
X
Lee
He
H
Li
Nan
N
Ren
Nanqi
N
D000388:Air; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D004560:Electricity; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005465:Fluorocarbon Polymers / Q000737:chemistry*; D011138:Polytetrafluoroethylene / Q000737:chemistry*
D005465:Fluorocarbon Polymers; C040402:perfluorosulfonic acid; D011138:Polytetrafluoroethylene