Low-cost nanowired α-MnO2/C as an ORR catalyst in air-cathode microbial fuel cell

Majidi, Mir Reza; Farahani, Fatemeh Shahbazi; Hosseini, Mir Ghasem; Ahadzadeh, Iraj

doi:10.1016/j.bioelechem.2018.09.004

Cited by 97 publications

(26 citation statements)

References 52 publications

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“…A plain CB/CC electrode then makes a battery with satisfactory performance, but it enjoys an even better performance when manganese oxide is mixed with carbon black. This result justifies the employment of MnO2 as oxygen reduction electrocatalyst both in the present case as well as in other fuel cell applications, as already discussed [13][14][15][16][17][18][19]. The appearance of the polarization curve, more specifically, the fact that current density continuously increased with voltage decrease and did not demonstrate an extremum is a rough index of the state of the electrolyte in the device.…”

Section: Electric Characteristics Of the Thin Film Al-air Batterysupporting

confidence: 82%

“…With this in mind, in the present work we studied the addition of MnO 2 as non-noble-metal electrocatalyst to operate the thin film Al-air battery. MnO 2 has been previously successfully employed as oxygen reduction electrocatalyst in several types of fuel cell devices including Al-air battery [13], Na-air battery [14], microbial fuel cells [15][16][17][18], and other types of fuel cells [19]. The present work will then also deal with the study of MnO 2 -loaded cathode electrodes which will be applied to thin film Al-air batteries.…”

Section: Introductionmentioning

confidence: 99%

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Study of a Thin Film Aluminum-Air Battery

et al. 2020

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A thin film aluminum-air battery has been constructed using a commercial grade Al-6061 plate as anode electrode, an air-breathing carbon cloth carrying an electrocatalyst as cathode electrode, and a thin porous paper soaked with aqueous KOH as electrolyte. This type of battery demonstrates a promising behavior under ambient conditions of 20 °C temperature and around 40% humidity. It presents good electric characteristics when plain nanoparticulate carbon (carbon black) is used as electrocatalyst but it is highly improved when MnO2 particles are mixed with carbon black. Thus, the open-circuit voltage was 1.35 V, the short-circuit current density 50 mA cm−2, and the maximum power density 20 mW cm−2 in the absence of MnO2 and increased to 1.45 V, 60 mA cm−2, and 28 mW cm−2, respectively, in the presence of MnO2. The corresponding maximum energy yield during battery discharge was 4.9 mWh cm−2 in the absence of MnO2 and increased to 5.5 mWh cm−2 in the presence of MnO2. In the second case, battery discharge lasted longer under the same discharge conditions. The superiority of the MnO2-containing electrocatalyst is justified by electrode electrochemical characterization data demonstrating reduction reactions at higher potential and charge transfer with much smaller resistance.

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Section: Electric Characteristics Of the Thin Film Al-air Batterysupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Study of a Thin Film Aluminum-Air Battery

et al. 2020

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“…Accordingly, to address these above issues, numerous non-Pt materials have been studied as cathode catalysts alternative to Pt-based catalysts for ORR (Banham et al, 2015;Shao et al, 2016). Cuurently, biomass-derived materials, such as active carbon (Deng et al, 2010), enzyme (Qiao et al, 2010), microorganism (Majidi et al, 2019;Papiya et al, 2019), transition metal porphyrins (Zheng et al, 2016), NiIn 2 S 4 /CNFs (Fu et al, 2019), and phthalocyanines (Kaare et al, 2016;Bhowmick et al, 2019) have potential capability to replace Pt. Therefore, the method of producing ORR catalyst from biomass has attracted extensive attention of researchers in many aspects (Liu et al, 2016;Sawant et al, 2016;Zhao et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Carbon-Based Electrocatalysts Derived From Biomass for Oxygen Reduction Reaction: A Minireview

Wang

Yang

et al. 2020

Front. Chem.

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Oxygen reduction reaction (ORR) electrocatalysts derived from biomass have become one of the research focuses in hetero-catalysis due to their low cost, high performance, and reproducibility properties. Related researches are of great significance for the development of next-generation fuel cells and metal-air batteries. Herein, the preparation methods of various biomass-derived catalysts and their performance in alkaline, neutral, and acidic media are summarized. This review clarifies the research progress of biomass carbon-based electrocatalysts for ORR in acidic, alkaline and neutral media, and discusses the future development trends. This minireview can give us an important enlightenment to practical application in the future.

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“…12 The performance of an ⊍-MnO 2 :rGO/C (synthesized by a reflux method) cathode was studied in a MFC and the obtained maximum power density was 32.5 mW m −2 . 13 In the same direction, ⊍-MnO 2 and ⊍-MnO 2 /C cathodes were synthesized (hydrothermal method) and used in MFCs, giving power densities of 111 and 180 mW m −2 for the former and latter cathode, respectively. 14 Conducting organics have also been used to improve MnO 2 performance as a cathode.…”

Section: Introductionmentioning

confidence: 99%

Improving the power density of a Geobacter consortium‐based microbial fuel cell by incorporating a highly dispersed birnessite/C cathode

Fuentes‐Albarrán

Juárez²,

Gamboa

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Microbial fuel cell (MFC) power production is limited by the cathodic oxygen reduction reaction (ORR). The quest for platinum-free materials for improving the cathodic ORR in MFCs is a challenging task. Birnessite-type MnO 2 /carbon cathodes in MFCs have been rarely reported so far. In this work, a birnessite/C cathode was tested in a MFC. RESULTS: A birnessite/C cathode was synthesized (using a rapid, facile and low-cost method) and its structural and morphological characteristics were assessed. The ORR on such a cathode was investigated using linear sweep voltammetry in a catholyte of 0.8 mol L-1 Na 2 SO 4 , pH 2 (same conditions as those of experimental MFCs). The current density values were higher than those for a plain C cathode. The volumetric power density improved from 224 to 6201 mW m −3 on replacing the plain C cathode with the birnessite/C cathode in a MFC. Deltaproteobacteria were found at the C anode and they were associated with the high power densities obtained. CONCLUSIONS: Birnessite/C is a promising cathodic electrode because its synthesis is straightforward, it is not expensive and it could promote the ORR and improve the power density in MFCs.

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Low-cost nanowired α-MnO2/C as an ORR catalyst in air-cathode microbial fuel cell

Cited by 97 publications

References 52 publications

Study of a Thin Film Aluminum-Air Battery

Study of a Thin Film Aluminum-Air Battery

Carbon-Based Electrocatalysts Derived From Biomass for Oxygen Reduction Reaction: A Minireview

Improving the power density of a Geobacter consortium‐based microbial fuel cell by incorporating a highly dispersed birnessite/C cathode

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