Electrophoretically fabricated nickel/nickel oxides as cost effective nanocatalysts for the oxygen reduction reaction in air-cathode microbial fuel cell

Choi, Yun-Jeong; Mohamed, Hend Omar; Park, Sung Gwan; Mayyahi, Riyam B. Al; Al‐Dhaifallah, Mujahed; Rezk, Hegazy; Ren, Xianghao; Yu, Hanchao

doi:10.1016/j.ijhydene.2019.05.091

Cited by 41 publications

(26 citation statements)

References 43 publications

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“…Conferring to, 78 the fabrication technique has a substantial effect on the catalytic movement of the PGM‐free catalyst electrode 78 . The techniques are mainly: (a) chemical vapor deposition, 79 (b) hydrothermal treatment, 80 (c) brushing, 81 (d) solgel techniques, 82 and (e) electrophoretic deposition (EPD) 83 …”

Section: Fuel Cellsmentioning

confidence: 99%

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Developments in fuel cells and electrochemical batteries using nanoparticles and nanofluids

Ghosh

Subudhi

2021

Energy Storage

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Section: Fuel Cellsmentioning

confidence: 99%

“…So, there has to be a perfect balance between the COD and CE. Ni/CF electrodes present the highest CE of 84.1%, 83 whereas the CNT‐Ppy has the highest COD.…”

Section: Fuel Cellsmentioning

confidence: 99%

Developments in fuel cells and electrochemical batteries using nanoparticles and nanofluids

Ghosh

Subudhi

2021

Energy Storage

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“…However, largescale application of these materials was restricted due to their cost ineffectiveness, easy dissolution of Pt, instability due to CO deactivation and fuel crossover effect. For these reasons, today, researchers are more inclined to develop electrocatalysts with the following priorities: minimization of the Pt metal loading; alloying of Pt with other transition metals to improve catalytic performance (Pt-Co, Pt-Ni, Pt-Fe, Pt-Ru, Pt-Pd, Pt-Rh, Pt-TiO 2 and Pt-Sn catalysts) [16][17][18]; advanced nonprecious metals and metal oxides [19][20][21][22][23]; metal-incorporated carbon materials [24][25][26][27]; and even metal-free catalysts [28][29][30] with remarkable electrocatalytic performance, enhanced durability and greater electrochemical stability with satisfying cost-effectiveness. The nonprecious metal-based catalysts always show lower catalytic activity in comparison to Pt/C, and they also show poor durability due to metal leaching during application.…”

Section: Introductionmentioning

confidence: 99%

Heteroatom-Doped Metal-Free Carbon Nanomaterials as Potential Electrocatalysts

Chattopadhyay

Pathak²,

Pak

2022

Molecules

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In recent years, heteroatom-incorporated specially structured metal-free carbon nanomaterials have drawn huge attention among researchers. In comparison to the undoped carbon nanomaterials, heteroatoms such as nitrogen-, sulphur-, boron-, phosphorous-, etc., incorporated nanomaterials have become well-accepted as potential electrocatalysts in water splitting, supercapacitors and dye-sensitized solar cells. This review puts special emphasis on the most popular synthetic strategies of heteroatom-doped and co-doped metal-free carbon nanomaterials, viz., chemical vapor deposition, pyrolysis, solvothermal process, etc., utilized in last two decades. These specially structured nanomaterials’ extensive applications as potential electrocatalysts are taken into consideration in this article. Their comparative enhancement of electrocatalytic performance with incorporation of heteroatoms has also been discussed.

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“…It was shown that these bacteria are capable of oxidising various simple and complex organic compounds, generating electricity as a by-product [ 11 , 12 ]. On the cathode, a reduction reaction occurs on a catalyst and an oxidant is reduced, thereby closing the circuit and electricity is produced [ [13] , [14] , [15] , [16] , [17] ]. Despite several oxidants being presented over the years [ 18 ], oxygen is the most commonly used because of its abundance and therefore does not need to be replaced, has high red-ox potential and is not harmful or expensive [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Scaling up self-stratifying supercapacitive microbial fuel cell

Walter

Santoro

Greenman

et al. 2020

International Journal of Hydrogen Energy

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Self-stratifying microbial fuel cells with three different electrodes sizes and volumes were operated in supercapacitive mode. As the electrodes size increased, the equivalent series resistance decreased, and the overall power was enhanced (small: ESR = 7.2 Ω and P max = 13 mW; large: ESR = 4.2 Ω and P max = 22 mW). Power density referred to cathode geometric surface area and displacement volume of the electrolyte in the reactors. With regards to the electrode wet surface area, the large size electrodes (L-MFC) displayed the lowest power density (460 μW cm −2 ) whilst the small and medium size electrodes (S-MFC, M-MFC) showed higher densities (668 μW cm −2 and 633 μW cm −2 , respectively). With regard to the volumetric power densities the S-MFC, the M-MFC and the L-MFC had similar values (264 μW mL −1 , 265 μW mL −1 and 249 μW cm −1 , respectively). Power density normalised in terms of carbon weight utilised for fabricating MFC cathodes-electrodes showed high output for smaller electrode size MFC (5811 μW g −1 -C- and 3270 μW g −1 -C- for the S-MFC and L-MFC, respectively) due to the fact that electrodes were optimised for MFC operations and not supercapacitive discharges. Apparent capacitance was high at lower current pulses suggesting high faradaic contribution. The electrostatic contribution detected at high current pulses was quite low. The results obtained give rise to important possibilities of performance improvements by optimising the device design and the electrode fabrication.

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Electrophoretically fabricated nickel/nickel oxides as cost effective nanocatalysts for the oxygen reduction reaction in air-cathode microbial fuel cell

Cited by 41 publications

References 43 publications

Developments in fuel cells and electrochemical batteries using nanoparticles and nanofluids

Developments in fuel cells and electrochemical batteries using nanoparticles and nanofluids

Heteroatom-Doped Metal-Free Carbon Nanomaterials as Potential Electrocatalysts

Scaling up self-stratifying supercapacitive microbial fuel cell

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