title: Low-cost adsorbent derived and in situ nitrogen/iron co-doped carbon as efficient oxygen reduction catalyst in microbial fuel cells.
abstract: A novel low-cost adsorbent derived and in situ nitrogen/iron co-doped carbon (N/Fe-C) with three-dimensional porous structure is employed as efficient oxygen reduction catalyst in microbial fuel cells (MFCs). The electrochemical active area is significantly improved to 617.19m(2)g(-1) in N/Fe-C by Fe-doping. And N/Fe-C (4.21at.% N, 0.11at.% Fe) exhibits excellent electrocatalytic activity with the oxygen reduction potential of -0.07V (vs. Ag/AgCl) which is comparable to commercial Pt/C. In MFCs tests, the maximum power density and output voltage with N/Fe-C are enhanced to 745mWm(-2) and 562mV (external resistance 1kΩ), which are 11% and 0.72% higher than Pt/C (0.5mgPtcm(-2)), respectively. Besides, the long-term stability of N/Fe-C retains better for more than one week. Moreover, the charge transfer resistance (Rct) values are recorded by the impedance measurements, and the low Rct of N/Fe-C is also result in better catalytic activity.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Chun
authors.initials: C
authors.lastname: Cao
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China. Electronic address: weill@iccas.ac.cn.
authors.forename: Liling
authors.initials: L
authors.lastname: Wei
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Min
authors.initials: M
authors.lastname: Su
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Wang
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China.
authors.forename: Jianquan
authors.initials: J
authors.lastname: Shen
mesh_terms: D000327:Adsorption; D001674:Bioelectric Energy Sources / Q000191:economics*; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D003365:Costs and Cost Analysis; D004560:Electricity; D004563:Electrochemistry; D004566:Electrodes; D007501:Iron / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D013997:Time Factors
chemical_list: D002244:Carbon; D007501:Iron; D009584:Nitrogen; D010100:Oxygen
keywords: Low-cost adsorbent; Microbial fuel cells; N/Fe co-doped carbon; Oxygen reduction catalyst