Iron-based electrocatalysts derived from scrap tires for oxygen reduction reaction: Evolution of synthesis-structure-performance relationship in acidic, neutral and alkaline media

Muhyuddin, Mohsin; Testa, Davide; Lorenzi, Roberto; Vanacore, Giovanni Maria; Poli, Federico; Soavi, Francesca; Specchia, Vito; Giurlani, Walter; Innocenti, Massimo; Rosi, Luca; Santoro, Carlo

doi:10.1016/j.electacta.2022.141254

Cited by 17 publications

(15 citation statements)

References 86 publications

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“…In the first step, the char was impregnated with KOH solution (in 30 mL ethanol). The adjusted mass ratio of the KOH/char was 4 85 . Then, the solution was stirred for 12 h 86 .…”

Section: Methodsmentioning

confidence: 99%

“…The adjusted mass ratio of the KOH/char was 4. 85 Then, the solution was stirred for 12 h. 86 The mixture was dried in an Ar environment at 80 • C under continuous stirring. The obtained sludge was then subjected to a heat treatment (second pyrolysis) at 700 • C while keeping the dwell time at 1 h in a tube furnace under the controlled atmosphere (UHP Ar at 100 cm 3 min −1 ).…”

Section: Electrocatalyst Synthesismentioning

confidence: 99%

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Litchi‐derived platinum group metal‐free electrocatalysts for oxygen reduction reaction and hydrogen evolution reaction in alkaline media

Mirshokraee

Muhyuddin

Lorenzi

et al. 2023

SusMat

Self Cite

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Within the framework of the circular economy, the waste litchi's skins were upgraded and transformed into electrocatalysts for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER). The waste litchi's skins were pyrolyzed, activated, and then used as carbon support for fabricating metal–nitrogen–carbons (M–N–Cs) which belong to a promising class of platinum group metal‐free electrocatalysts. The activated char was functionalized with transition metal (Fe, Ni, and Co)‐ phthalocyanine (Pc) in monometallic and bimetallic fashion by subjecting it to a thermal treatment at 600 and 900°C. The samples functionalized at 900°C showed higher performance for HER due to the formation of metal nanoparticles, whereas the samples functionalized at 600°C showed higher performance for ORR. Particularly, sample Ni–Co 900 had an overpotential of −0.38 V for HER, while the sample Fe 600 was the most active electrocatalyst for ORR by demonstrating the onset potential of ∼0.9 V (a half‐wave potential of ∼0.81 V) with the least production of unwanted peroxide anion.

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“…In the first step, the char was impregnated with KOH solution (in 30 mL ethanol). The adjusted mass ratio of the KOH/char was 4 85 . Then, the solution was stirred for 12 h 86 .…”

Section: Methodsmentioning

confidence: 99%

Section: Electrocatalyst Synthesismentioning

confidence: 99%

Litchi‐derived platinum group metal‐free electrocatalysts for oxygen reduction reaction and hydrogen evolution reaction in alkaline media

Mirshokraee

Muhyuddin

Lorenzi

et al. 2023

SusMat

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, one problem with fuel cells is that they rely heavily on expensive platinum. Non-platinum-group metal (NPGM) catalysts, such as iron and nitrogen co-doped carbon materials, are good contenders to platinum-based catalysts for the oxygen reduction reaction (3,(6)(7)(8)(9)(10). Porous carbon materials are often used as a main precursor to provide electrical conductivity and oxygen mass transport to active sites.…”

Section: Introductionmentioning

confidence: 99%

“…Waste tires contain over 200 components, mainly natural and synthetic rubbers (~46%), carbon black (5-22%), steel (16.5-25%), textiles (~5%), ZnO (~1%), sulfur (~1%), TiO 2 , and SiO 2 . The total carbon content in waste tires is therefore quite high (68-75%), making it a good source of carbon (2,3,11). As waste tires are abundant and hard to recycle, finding new uses for end-of-life tires is important from an environmental point of view (5).…”

Section: Introductionmentioning

confidence: 99%

“…As waste tires are abundant and hard to recycle, finding new uses for end-of-life tires is important from an environmental point of view (5). A lot of research has been done on obtaining activated carbon from waste tires and using them for different applications ranging from wastewater treatment to battery materials (4,11), but using such carbon to synthesize fuel cell catalysts remains relatively unexplored, with only a few examples discussed in the literature (3,10,12). Synthesizing porous carbon materials for more economically viable NPGM fuel cell catalysts could provide one way to use waste tires more sustainably and lower the cost of efficient fuel cell catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Laanemäe¹,

Jäger²,

Teppor³

et al. 2023

ECS Trans.

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A porous carbon material was synthesized using waste tire granules via pyrolysis. Six non-platinum-group metal catalyst materials were synthesized based on this carbon material, Fe(NO3)3 · 9H2O, and either dicyandiamide or guanidine carbonate as the nitrogen source. Synthesis parameters such as pyrolysis temperature, precursor mass ratios, and acid washing time were varied for each material. All catalysts were characterized physically using HR-SEM, SEM-EDX, and N2 sorption analyses as well as electrochemically using the rotating disk electrode method in 0.1 M KOH. The materials were rich in nanofibers, and exhibited moderate porosity and specific surface area (S BET = 77-194 m2 g-1). By modifying the synthesis parameters of the materials, the electrochemical properties were successfully improved, achieving E onset = 0.92 V vs RHE and E 1/2 = 0.82 V vs RHE (Fe-guan III 900). The number of transferred electrons in the ORR was n = 4 for the more active materials.

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Recent Development and Future Frontiers of Oxygen Reduction Reaction in Neutral Media and Seawater

Vo,

Gao,

Liu

2024

Adv Funct Materials

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The oxygen reduction reaction (ORR) in neutral media is of great importance due to its potential to optimize energy generation and storage application. With the increasing urgency for sustainable and efficient energy solutions, comprehensively understanding and enhancing ORR performance in such media have become crucial. This review aims to shed light on this critical yet challenging area. This review encapsulates the fundamental principle of ORR and the latest breakthrough in the field of electrocatalysts, with a distinct focus on innovative synthesis strategies for creating novel, efficient, and robust electrocatalysts. A succinct evaluation of the strengths, limitations, performance, and reaction mechanism is presented. The essential findings are analyzed and their implications for future research directions. Finally, an outlook on current advances, challenges, and future research recommendations is provided. This review serves as a stepping‐stone toward harnessing the underutilizing energy potential within the extensive aquatic environment.

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Iron-based electrocatalysts derived from scrap tires for oxygen reduction reaction: Evolution of synthesis-structure-performance relationship in acidic, neutral and alkaline media

Cited by 17 publications

References 86 publications

Litchi‐derived platinum group metal‐free electrocatalysts for oxygen reduction reaction and hydrogen evolution reaction in alkaline media

Litchi‐derived platinum group metal‐free electrocatalysts for oxygen reduction reaction and hydrogen evolution reaction in alkaline media

Waste Tire Derived Carbon Support for Non-Platinum-Group Metal Catalyst Materials for Oxygen Reduction Reaction in Alkaline Medium

Recent Development and Future Frontiers of Oxygen Reduction Reaction in Neutral Media and Seawater

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