Functionalized conductive activated carbon-polyaniline composite anode for augmented energy recovery in microbial fuel cells

被引：38
作者：
Yellappa, Masapogu [1 ,2 ]
Modestra, J. Annie [1 ]
Reddy, Y. V. Rami [2 ]
Mohan, S. Venkata [1 ]
机构：
[1] Indian Inst Chem Technol, CSIR, Dept Energy & Environm Engn, Bioengn & Environm Sci Lab,IICT, Hyderabad 500007, Andhra Pradesh, India
[2] Sri Venkateswara Univ, Dept Chem, Tirupati 517502, Andhra Pradesh, India
来源：
BIORESOURCE TECHNOLOGY | 2021年 / 320卷
关键词：
Nanocomposite; Electro catalyst; Bioelectrochemical systems; Nyquist plots; Capacitive bioanode; POWER-GENERATION; ELECTRODE; RESISTANCE; NANOTUBES; STORAGE;
D O I：
10.1016/j.biortech.2020.124340
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Internal resistance is one of the limiting factors for power production in microbial fuel cells (MFC). To overcome this, current study designed polyaniline functionalized activated carbon (PANi-FAC) composite as capacitive anode with strategic electrocatalytic capability, and was comparatively assessed with SSM-PANi and bare SSM as anodes in three double chambered MFCs respectively. Power output and COD removal efficiency of PANi-FAC coated on stainless steel mesh (SSM-PANi/FAC) is superior (322 mW/m(2); 87.6%) in comparison to SSM-PANi (273 mW/m(2); 62.4%) and bare SSM (169 mW/m(2); 54%). In addition, maximum specific capacitance of hybrid electrodes is relatively high with SSM-PANi/FAC (360.84 F/g) than SSM-PANi anode (128.26 F/g). Nyquist impedance plots showed less charge-transfer resistance (Rct) with SSM-PANi/FAC (29.9 Omega) than SSMPANi (206.8 Omega) and SSM anodes (678 Omega). Study infers that, development of electrochemical double layer capacitance makes SSM-PANi/FAC, a potential capacitive anode for augmenting bio-electrocatalytic activity and reducing Ohmic losses.
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页数：11
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