TY - JOUR
T1 - Low-cost stainless-steel wool anodes modified with polyaniline and polypyrrole for high-performance microbial fuel cells
AU - Sonawane, Jayesh M.
AU - Patil, Sunil A.
AU - Ghosh, Prakash C.
AU - Adeloju, Samuel B.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - A conducting polymer coated stainless-steel wool (SS-W) is proposed for use as a low-cost anode for microbial fuel cells (MFCs). When coated with polyaniline (PANi) and polypyrrole (PPy), the pristine SS-W, SS/PANi-W and SS/PPy-W anodes produced maximum current densities of 0.30 ± 0.04, 0.67 ± 0.05, 0.56 ± 0.07 mA cm−2, respectively, in air-cathode MFCs. Also, based on achieved power density, both SS/PANi-W and SS/PPy-W achieved 0.288 ± 0.036 mW cm−2 and 0.187 ± 0.017 mW cm−2, respectively, which were superior to 0.127 ± 0.011 mW cm−2 obtained with pristine SS-W. Further, in comparison with SS-P based anodes, all SS-W based anodes gave improved power densities under similar experimental conditions by at least 70%. Moreover, the charge transfer resistance of the SS-W was much lower (240 ± 25 Ω cm−2) than for the SS-P (3192 ± 239 Ω cm−2). The j0(apparent) values obtained for SS/PANi-W (0.098 ± 0.007 mA cm−2) and SS/PPy-W (0.036 ± 0.004 mA cm−2) anodes were also much higher than that of the pristine SS-W (0.020 ± 0.005 mA cm−2), as well as than those of all SS-P based anodes. The observed enhancement of the bioelectrocatalytic performances were well supported by physicochemical and electrochemical characterisation.
AB - A conducting polymer coated stainless-steel wool (SS-W) is proposed for use as a low-cost anode for microbial fuel cells (MFCs). When coated with polyaniline (PANi) and polypyrrole (PPy), the pristine SS-W, SS/PANi-W and SS/PPy-W anodes produced maximum current densities of 0.30 ± 0.04, 0.67 ± 0.05, 0.56 ± 0.07 mA cm−2, respectively, in air-cathode MFCs. Also, based on achieved power density, both SS/PANi-W and SS/PPy-W achieved 0.288 ± 0.036 mW cm−2 and 0.187 ± 0.017 mW cm−2, respectively, which were superior to 0.127 ± 0.011 mW cm−2 obtained with pristine SS-W. Further, in comparison with SS-P based anodes, all SS-W based anodes gave improved power densities under similar experimental conditions by at least 70%. Moreover, the charge transfer resistance of the SS-W was much lower (240 ± 25 Ω cm−2) than for the SS-P (3192 ± 239 Ω cm−2). The j0(apparent) values obtained for SS/PANi-W (0.098 ± 0.007 mA cm−2) and SS/PPy-W (0.036 ± 0.004 mA cm−2) anodes were also much higher than that of the pristine SS-W (0.020 ± 0.005 mA cm−2), as well as than those of all SS-P based anodes. The observed enhancement of the bioelectrocatalytic performances were well supported by physicochemical and electrochemical characterisation.
KW - Anode
KW - Microbial fuel cells
KW - Polyaniline
KW - Polypyrrole
KW - Power density
KW - Stainless steel wool
UR - http://www.scopus.com/inward/record.url?scp=85041429528&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041429528&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2018.01.001
DO - 10.1016/j.jpowsour.2018.01.001
M3 - Article
AN - SCOPUS:85041429528
VL - 379
SP - 103
EP - 114
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -