Poison tolerance of non-precious catalyst towards oxygen reduction reaction

Yang, Wei; Li, Jun; Lan, Linghan; Fu, Qian; Zhang, Liang; Zhu, Xun; Liu, Qiang

doi:10.1016/j.ijhydene.2018.03.135

Cited by 24 publications

(15 citation statements)

References 23 publications

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“…Despite enzymes such as laccase or bilirubin oxidases are the most active catalysts for ORR in neutral media, their elevated cost and low durability obstruct their utilization in large scale . Platinum is a very active catalyst, but it is extremely expensive and sensible to poisoning in the presence of anions . Carbonaceous‐based materials and transition metal‐containing catalysts have replaced platinum successfully.…”

Section: Introductionmentioning

confidence: 99%

“…[26] Platinum is a very active catalyst, but it is extremely expensive and sensible to poisoning in the presence of anions. [27][28][29][30] Carbonaceous-based materials [31][32][33] and transition metal-containing catalysts [34][35][36][37] have replaced platinum successfully. The addition of transition metals and especially FeÀ NÀ C active sites has improved significantly the performance almost doubling the MFCs output.…”

Section: Introductionmentioning

confidence: 99%

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Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

et al. 2020

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Microbial fuel cells (MFCs), despite representing a promising technology, suffer from low power generation that hinders, in most of the cases, their application as power sources. In fact, MFCs are usually coupled with supercapacitors or batteries and these storage units accumulate the energy harvested by MFCs and deliver it on demand. In this work, the electrodes of a MFC are used as electrodes of an internal supercapacitor and discharges and self‐recharges are performed and investigated. Discharges between 1.5 mA and 4 mA were presented producing a maximum power of 1.59 mW. Discharges between 1 mA and 100 mA and recharges are systematically studied for three commercial supercapacitors (SCs) with different capacitances of 1 F, 3 F, and 6 F. The MFC was also connected in parallel with external SCs and discharged galvanostatically. The SC was self‐recharged by the MFC without any additional external power sources. At lower current pulses, the MFC contributed to the overall capacitance, probably owing to its faradaic component. At higher current pulses, the use of SCs enables the energy to be harvested by MFCs at power levels that could not be achieved with the MFC alone. This study demonstrates that, through the proper connection and operation mode of the MFC and SC, it is possible to improve and maximize the performance of every single unit. Understanding the MFC−SC combination is important for identifying the right practical application for which the combination is suitable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

et al. 2020

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Section: Introductionmentioning

confidence: 99%

“…As a benchmark for ORR [8], one electrode was coated with Pt as the catalyst. Unfortunately, Pt is very expensive and susceptible to catalyst poisoning by S 2 − or NH 4 + [29], which are commonly present in municipal wastewater, and as a consequence Pt is not suitable for wastewater treatment applications. Several publications investigated MnO 2 as an ORR catalyst for MFCs, including the influence of its different modifications (alpha, beta, gamma), different mixing ratios, and varying manufacturing methods.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Improvement of Scalable Oxygen Reducing Cathodes for Microbial Fuel Cells by Spray Coating

Muddemann

Haupt²,

Jiang

et al. 2019

Processes

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This contribution describes the effect of the quality of the catalyst coating of cathodes for wastewater treatment by microbial fuel cells (MFC). The increase in coating quality led to a strong increase in MFC performance in terms of peak power density and long-term stability. This more uniform coating was realized by an airbrush coating method for applying a self-developed polymeric solution containing different catalysts (MnO 2 , MoS 2 , Co 3 O 4 ). In addition to the possible automation of the presented coating, this method did not require a calcination step. A cathode coated with catalysts, for instance, MnO 2 /MoS 2 (weight ratio 2:1), by airbrush method reached a peak and long-term power density of 320 and 200-240 mW/m 2 , respectively, in a two-chamber MFC. The long-term performance was approximately three times higher than a cathode with the same catalyst system but coated with the former paintbrush method on a smaller cathode surface area. This extraordinary increase in MFC performance confirmed the high impact of catalyst coating quality, which could be stronger than variations in catalyst concentration and composition, as well as in cathode surface area.

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“…A number of researches were focused on optimizing the electro-oxidation of the fuel at the anode side [5]. However, attention must also be directed in improving the oxygen reduction reaction (ORR) at the cathode compartment, which is controlled by slow reaction kinetics and high over potential that in turn limits the overall performance of the fuel cell [6]. Due to these limitations, researchers seek to develop novel electrocatalysts that are highly active towards the ideal four-electron route of the ORR [5,7].…”

Section: Introductionmentioning

confidence: 99%

Platinum-Free Electrocatalyst for Oxygen Reduction Reaction Derived from the Direct Pyrolysis of Watermelon Peels

Matibag

Geronimo

Garcia

et al. 2019

IJIE

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Carbon-based nanomaterials derived from the pyrolysis of heteroatom-containing carbonaceous precursor was shown to exhibit significant electrocatalytic activity towards oxygen reduction reaction (ORR). Biomass from agricultural waste could be seen as possible low-cost precursor for the preparation of carbon-based ORR electrocatalysts. In this study, watermelon peels (WP) were directly pyrolyzed under N2 atmosphere to produce novel carbon-based ORR electrocatalysts. WP were oven-dried and pulverized using a mechanical grinder to produce WP powder. A weighed amount of the resulting powder was then transferred into a ceramic boat and inside a quartz tube furnace. The WP powder was pyrolyzed from room temperature to pyrolysis temperature T at a rate of 5 °C/min under N2 atmosphere. The temperature was held at T for an hour, followed by natural cooling back to room temperature. The pyrolysis temperature was optimized, with T = 800 °C, 900 °C, and 1000 °C. The resulting pyrolysis products were characterized using cyclic voltammetry (CV), rotating disc electrode voltammetry (RDE), and scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDX). CV revealed that WP pyrolyzed at 1000 °C gave the most positive onset potential (Eonset = 0.40 V) and highest current density (j = 10.79 mA/cm 2), compared to those pyrolyzed at 800 °C (Eonset = 0.30 V; j = 2.047 mA/cm 2) and 900 °C (Eonset = 0.30 V; j = 3.494 mA/cm 2). Levich analysis from RDE data showed that the electrocatalysts prepared at 1000 °C proceeded closest to the ideal four-electron route, compared to those prepared at 800 °C and 900 °C. SEM-EDX analysis showed the changes WP underwent in terms of surface morphology and elemental composition, which are then correlated with the apparent electrocatalytic activities of pyrolyzed WP. These findings present the feasibility of using WP as low-cost precursor for ORR electrocatalysts, which could be utilized in fuel cells.

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Poison tolerance of non-precious catalyst towards oxygen reduction reaction

Cited by 24 publications

References 23 publications

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

Boosting Microbial Fuel Cell Performance by Combining with an External Supercapacitor: An Electrochemical Study

Investigation and Improvement of Scalable Oxygen Reducing Cathodes for Microbial Fuel Cells by Spray Coating

Platinum-Free Electrocatalyst for Oxygen Reduction Reaction Derived from the Direct Pyrolysis of Watermelon Peels

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