Gourav Dhar Bhowmick, Sovik Das, Harshlata Verma et al.

Electrochimica Acta • 2019

Nan Xiao, P. Ravi Selvaganapathy, Rong Wu et al.

Bioresource Technology • 2020

Xiaotong Shen, Jian Zhang, Daoxing Liu et al.

Chemical Engineering Journal • 2018

Xiaoyuan Zhang, Weihua He, Rufan Zhang et al.

ChemSusChem • 2016

Microbial fuel cells (MFCs) can generate electricity from the oxidation of organic substrates using anodic exoelectrogenic bacteria and have great potential for harvesting electric energy from wastewater. Improving oxygen reduction reaction (ORR) performance at a neutral pH is needed for efficient energy production. Here we show a nitrogen doped (≈4 wt%) ionothermal carbon aerogel (NDC) with a high surface area, large pore volume, and hierarchical porosity, with good electrocatalytic properties for ORR in MFCs. The MFCs using NDC air cathodes achieved a high maximum power density of 2300 mW m -2 , which was 1.7 times higher than the most commonly used Pt/C air cathodes and also higher than most state-of-the-art ORR catalyst air cathodes. Rotating disk electrode measurements verified the superior electrocatalytic activity of NDC with an efficient four-electron transfer pathway (n=3.9). These findings highlight NDC as a better-performing and cost-efficient catalyst compared with Pt/C, making it highly viable for MFC applications.

Daniele Cecconet, Silvia Bolognesi, Daniele Molognoni et al.

Journal of Water Process Engineering • 2018

Junfeng Chen, Lihua Zhang, Yongyou Hu et al.

Bioresource Technology • 2017

Lizhen Zeng, Wenguang Zhang, Pan Xia et al.

Biosensors and Bioelectronics • 2017

Kyoung‐Yeol Kim, Wulin Yang, Yaoli Ye et al.

Bioresource Technology • 2016

Marcelinus Christwardana, Domenico Frattini, Grazia Accardo et al.

Journal of Power Sources • 2018

Peng Zhang, Jia Liu, Youpeng Qu et al.

Chemical Engineering Journal • 2017

Meng Li, Shaoqi Zhou, Yuting Xu

Journal of Power Sources • 2019

Gourav Dhar Bhowmick, Sovik Das, Koushik Adhikary et al.

International Journal of Hydrogen Energy • 2019

Xingwang Zhou, Xiaofen Chen, Hongying Li et al.

Electrochimica Acta • 2016

Carlos Munoz‐Cupa, Amarjeet Bassi

Journal of Water Process Engineering • 2023

Taehui Nam, Heunggu Kang, Soumya Pandit et al.

Journal of Cleaner Production • 2020

Siti Farah Nadiah Rusli, Mimi Hani Abu Bakar, Kee Shyuan Loh et al.

International Journal of Hydrogen Energy • 2018

Ruggero Rossi, Patrick Evans, Bruce E. Logan

Journal of Power Sources • 2018

Wei Zheng, Teng Cai, Manhong Huang et al.

Journal of Bioscience and Bioengineering • 2017

Hou-Yun Yang, Chen Jian, Yu Li et al.

Environmental Research • 2022

Chao Zhao, Yangfan Song, Hongwei Chen et al.

International Journal of Hydrogen Energy • 2024

Indrasis Das, Md Tabish Noori, Melad Shaikh et al.

ACS Applied Energy Materials • 2020

Porous catalysts with a higher activated surface area are strategic materials to enhance the oxygen reduction reaction (ORR) and improve the performance of the microbial fuel cells (MFCs). In this investigation, a highly porous cagelike zirconium metal–organic framework (Zr-MOF) was synthesized by the solvothermal method and used as the ORR catalyst in an air-cathode MFC. Raman spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy revealed the successful synthesis of Zr-MOF having a high specific surface area of 858 m2/g. Cyclic voltammetry analysis demonstrated a sharp ORR peak current at −0.38 V having a current value of 11 mA compared to the negligible amount of peak current observed for cathode having no catalyst. The MFC having Zr-MOF-catalyzed cathode could translate a power density of 131.2 ± 3.5 mW/m2 at a coulombic efficiency of 29.04 ± 1.54% from the organic matter present in wastewater; these values were comparable with the MFC having 10% Pt/C on cathode (128.7 ± 4.9 mW/m2 and 29.03 ± 2.76%, respectively). The cost of energy production by the Zr-MOF cathode was estimated to be ca. 4.4 times lower than that by the 10% Pt/C cathode. The performance of MFC indicates that Zr-MOF could be an excellent alternative cathode catalyst, to the costly Pt/C, upon ambitious scale-up of MFCs.

Rachnarin Nitisoravut, Cao Ngoc Dan Thanh, Roshan Regmi

International Journal of Green Energy • 2017

There is an increasing trend to conduct the researches related to Microbial Fuel Cells (MFCs) in the recent years. Limited power output has been the major obstacle for the practical application and upscaling of MFCs. Attempts have been made on electrode modifications such as anode treatments, cathode modifications with catalysts and bio cathodes developments to produce varying degrees of improved output current depending upon the types of modifications. Power density and Coulombic efficiency have been considered as the important parameters to analyze the system performances. This paper overviews on the advances made in MFCs’ researches focusing on different types of electrodes modifications along with the involved methodology. Furthermore, the system performances of different modified MFCs are compared in terms of the power density and the Coulombic efficiency.

Wulin Yang, Kyoung‐Yeol Kim, Pascal E. Saikaly et al.

Energy & Environmental Science • 2017

A review of the literature using cube-type microbial fuel cell reveals the extent in variability of power production.

J. Villaseñor Camacho, Luis Rodríguez Romero, Carmen M. Fernández‐Marchante et al.

Ecological Engineering • 2017

Amitap Khandelwal, Meenu Chhabra, Pallavee Yadav

Bioresource Technology • 2020

Junfeng Chen, Yongyou Hu, Lihua Zhang et al.

Bioresource Technology • 2017

Huong Viet Hoa Tran, Eojin Kim, Sokhee P. Jung

Journal of Industrial and Engineering Chemistry • 2021

Sokhee P. Jung, Eojin Kim, Bonyoung Koo

Chemosphere • 2018

Hongmei Jiang, Lu Yang, Wenfang Deng et al.

Journal of Power Sources • 2017

Carlo Santoro, Mounika Kodali, Sergio Herrera et al.

Journal of Power Sources • 2017

Platinum group metal-free (PGM-free) catalyst with different loadings was investigated in air breathing electrodes microbial fuel cells (MFCs). Firstly, the electrocatalytic activity towards oxygen reduction reaction (ORR) of the catalyst was investigated by rotating ring disk electrode (RRDE) setup with different catalyst loadings. The results showed that higher loading led to an increased in the half wave potential and the limiting current and to a further decrease in the peroxide production. The electrons transferred also slightly increased with the catalyst loading up to the value of ≈3.75. This variation probably indicates that the catalyst investigated follow a 2x2e - transfer mechanism. The catalyst was integrated within activated carbon pellet-like air-breathing cathode in eight different loadings varying between 0.1 mgcm -2 and 10 mgcm -2 . Performance were enhanced gradually with the increase in catalyst content. Power densities varied between 90 ± 9 μWcm -2 and 262 ± 4 μWcm -2 with catalyst loading of 0.1 mgcm -2 and 10 mgcm -2 respectively. Cost assessments related to the catalyst performance are presented. An increase in catalyst utilization led to an increase in power generated with a substantial increase in the whole costs. Also a decrease in performance due to cathode/catalyst deterioration over time led to a further increase in the costs.

Zhenyu Xing, Ningshengjie Gao, Yitong Qi et al.

Carbon • 2017

Marcelinus Christwardana, J. Joelianingsih, Linda Aliffia Yoshi

Journal of Applied Electrochemistry • 2022

Wei Chen, Huajun Feng, Dongsheng Shen et al.

The Science of The Total Environment • 2017

Namita Shrestha, Govinda Chilkoor, Joseph Wilder et al.

Bioelectrochemistry • 2018

Bonyoung Koo, Sokhee P. Jung

Chemical Engineering Journal • 2021

Pratiksha Srivastava, Saurabh Dwivedi, Naresh Kumar et al.

Bioresource Technology • 2017

Rong‐Bin Song, Cui‐e Zhao, Liping Jiang et al.

ACS Applied Materials & Interfaces • 2016

Promoting the performance of microbial fuel cells (MFCs) relies heavily on the structure design and composition tailoring of electrode materials. In this work, three-dimensional (3D) macroporous graphene foams incorporated with intercalated spacer of multiwalled carbon nanotubes (MWCNTs) and bacterial anchor of Fe3O4 nanospheres (named as G/MWCNTs/Fe3O4 foams) were first synthesized and used as anodes for Shewanella-inoculated microbial fuel cells (MFCs). Thanks to the macroporous structure of 3D graphene foams, the expanded electrode surface by MWCNTs spacing, as well as the high affinity of Fe3O4 nanospheres toward Shewanella oneidensis MR-1, the anode exhibited high bacterial loading capability. In addition to spacing graphene nanosheets for accommodating bacterial cells, MWCNTs paved a smoother way for electron transport in the electrode substrate of MFCs. Meanwhile, the embedded bioaffinity Fe3O4 nanospheres capable of preserving the bacterial metabolic activity provided guarantee for the long-term durability of the MFCs. With these merits, the constructed MFC possessed significantly higher power output and stronger stability than that with conventional graphite rod anode.

Panpan Liu, Peng Liang, Yong Jiang et al.

Applied Energy • 2018

Jiao Feng, Ying Qian, Zhen Wang et al.

Journal of Biotechnology • 2018

Marcelinus Christwardana, Gerald Ensang Timuda, Nono Darsono et al.

Journal of Power Sources • 2022