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.

引用

页数：11

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