Silver electrodeposition on the activated carbon air cathode for performance improvement in microbial fuel cells

Pu, Liangtao; Li, Kexun; Chen, Zhihao; Zhang, Peng; Zhang, Xi; Fu, Zhen‐Guo

doi:10.1016/j.jpowsour.2014.06.071

Cited by 94 publications

(40 citation statements)

References 37 publications

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“…The total resistance (10.2384 X) of the OHSNC (AC-N2) electrode was smaller compared to that of the electrode with silver electrodeposition on the activated carbon catalyst (12.2 X) and the R ct of the AC-N2 (0.9369 X) was almost decreased by 8.58 times compared with that of silver electrodeposition on the activated carbon catalyst (8.979 X) reported by Pu et al (2014). This demonstrated that the prepared cathodes had a greater charge transfer rate and could produce larger amount of exchange current.…”

Section: Electrochemical Characterizationmentioning

confidence: 87%

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

et al. 2015

Bioresource Technology

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Section: Electrochemical Characterizationmentioning

confidence: 87%

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

et al. 2015

Bioresource Technology

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“…Hence the characterizations of anode not only provide a suitable place for bacterial attachments but also enhance the conductivity of the whole MFC. Up to now, researches have been frequently carried out involving the anode of MFC (Logan and Cheng., 2007;Karra et al, 2012;Popov et al, 2012;Park et al, 2013;Su et al, 2012;Zou et al, 2008), but the explorations of MFC cathode catalysts have been relatively limited when comparing with the researches of anode (Pu et al, 2014;Yang et al, 2014;Zhang et al, 2014). The electrocatalysts with high oxygen reduction reaction (ORR) efficiency are the key electrode materials for MFCs (Feng et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Nickel oxide and carbon nanotube composite (NiO/CNT) as a novel cathode non-precious metal catalyst in microbial fuel cells

Huang

Zhu

Yang

et al. 2015

Biosensors and Bioelectronics

172

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“…This made ORR at the cathode to take place via four-electron pathway and the electrodes' total resistance were largely reduced due to the fact that silver has the highest conductivity than any metal [36]. The same method of electrodeposition was used to integrate MnO 2 into AC which left Carnation-like MnO 2 crystals bound to the surface of AC air cathode increasing mesopores thus boosting cathode performance with maximum power density of 1554 mWm -2 [29].…”

Section: Transition Metal/oxides Dopingmentioning

confidence: 99%

“…For instance, a MFC well fitted with an AC cathode bonded with a polytetrafluoroethylene (PTFE) and the current collected by nickel brought about 1220 mWm −2 greater to 1060 mWm −2 achieved using a Pt catalyst cathode (0.5 mg-Pt cm −2 ) and a Nafion binder [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] ) AC powder [50].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Catalyst Efficiency of Activated Carbon for Oxygen Reduction Reaction in Air Cathode Microbial Fuel Cell Application

Muhoza¹,

Ma²,

Kalakodio³

et al. 2017

Int J Waste Resour

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IntroductionMicrobial fuel cell (MFC) is a potential environmental friendly bioelectrochemical system as it combines treatment of organic wastes and electric energy generation [1][2][3][4]. In MFCs, the electrochemically active microorganisms' biofilm colonizes the anodic surface thus oxidizing organic pollutants producing electrons and protons. Electrons are transferred through an external circuit to the cathode where are received by the terminal electron acceptor while protons migrate through the membrane or solution to the cathode to keep electrical neutrality which creates potential difference [1,5]. Several applications of this technology such as hydrogen gas production [6], hydrogen peroxide generation [7], desalination [8][9][10], remote sensors and monitoring devices [11,12] metal recovery at cathode [13] and robots [12,14] to mention but few, have been studied and left researchers with more innovation ideas in the field. Having electrochemical processes catalyzed by biological processes in addition to some other design parameters such as engineering of microbial biofilm structure, decrypting electron transfer mechanisms, cell/reactor configuration, electrode materials and geometries, substrate concentration, retention time, and optimizing cathode catalysts [15,16] makes this system more sensitive to internal losses and gives it a certain level of complexity [17,18]. This and other challenges that are still unanswered are the bottlenecks for MFC application in real environment [15,19]. Therefore, current researches focus on limiting factors and ways to curb their effects thus increasing the performance [2,20,21]. Among others, is trying different MFC design configurations where MFC aircathode proved to more advantageous over double chamber for scaling up because of its simple structure, low cost and direct use oxygen in air, which could removes aeration from conventional wastewater treatment process [5,22]. Due to its high reduction potential and inexhaustible source, Oxygen is the most fairly used terminal electron acceptor and is considered to be competent for MFC air-cathode application and scale up as it plays a critical role in both organic oxidation and energy recovery at the cathode [23]. AbstractMicrobial fuel cell (MFC) air cathode present a great potential among other configurations due to its simple design, low cost and direct use oxygen from air as terminal electron acceptor which could help to save tremendous energy used for aeration in conventional wastewater treatment. However, at the cathode oxygen reduction reaction which is vital to generate high power density is naturally slow, therefore a catalyst is needed to overcome its reaction over-potential. Platinum (Pt) is the standard used catalyst in large number of oxidation reduction reactions whether in basic or acidic electrolytes. But, due to its high cost and limited resources it doesn't make it a sustainable candidate for scaling up of this juvenile technology. Activated carbon was found to be a low cost and environmental friendly Ox...

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Silver electrodeposition on the activated carbon air cathode for performance improvement in microbial fuel cells

Cited by 94 publications

References 37 publications

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

Nickel oxide and carbon nanotube composite (NiO/CNT) as a novel cathode non-precious metal catalyst in microbial fuel cells

Enhancing Catalyst Efficiency of Activated Carbon for Oxygen Reduction Reaction in Air Cathode Microbial Fuel Cell Application

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