Efficient synergistic effect of trimetallic organic frameworks derived as bifunctional catalysis for the rechargeable zinc-air flow battery

Xue, Jinling; Deng, Shipei; Wang, Rui; Li, Yinshi

doi:10.1016/j.carbon.2023.01.034

Cited by 35 publications

(19 citation statements)

References 57 publications

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“…(2) The coexistence of abundant different M-N x active species (M = Co, Fe, and Zn) not only increases the reaction sites for oxygen molecules but also promotes the adsorption of reaction intermediates (OH*, O*, OOH*), owing to the synergistic effect between the trimetallic active species. (3) The CoFe alloy NPs can interact with more OH – , which can either contact with the metal NPs encapsulated in the nanotubes or diffuse through the highly porous layered structure during the OER process . As a result, more truly reactive species, CoFe-OOH, was generated.…”

Section: Results and Discussionmentioning

confidence: 99%

Architecting N-doped Carbon Nanotube-Rich Carbon Nanofibers with Biomimetic Vine-Leaf-Whisker Structure as Robust Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries

Wang,

Chen,

Song

et al. 2024

Inorg. Chem.

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Efficient and durable bifunctional catalysts toward oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are urgently desirable but challenging for rechargeable Zn−air batteries (ZABs), especially flexible wearable ZABs. Inspired by the vine-leaf-whisker structure in nature, we proposed a three-dimensional (3D) hierarchical bifunctional catalyst (denoted as Co−Fe−Zn@N-CNT/CNF) consisting of N-doped carbon nanotubes embedded with abundant CoFe alloy nanoparticles, leaf-shaped N-doped carbon nanoflakes, and porous carbon fibers for rechargeable ZABs. The special biomimetic structure provides a large specific surface area, allowing for high exposure of the active site and ensuring fast mass transport/charge transfer. The close combination of CoFe bimetallic alloys and N-doped carbon nanotubes delivers high electrocatalytic activity, while the coexistence of various active sites such as metal nanoparticles (NPs), metal-N x , doped N species, and their synergistic interactions endows the catalysts with more active sites. As such, the Co−Fe−Zn@N-CNT/CNF catalyst achieves superior bifunctional catalytic activities for the ORR (a half-wave potential of 0.84 V) and the OER (an overpotential of 326 mV at 10 mA cm −2 ) in alkaline media, comparable to commercial Pt/C and RuO 2 . Remarkably, both aqueous and solid-state ZABs assembled with Co−Fe−Zn@N-CNT/CNF catalysts as air electrodes demonstrate excellent charging/discharging performance, high peak power density, and robust long-term cycling stability. More interestingly, the flexible ZAB performs well even under bending conditions, displaying satisfactory device stability and mechanical flexibility. This study presents a new collective morphological-composition-structural engineering strategy for exploiting the efficient bifunctional oxygen electrocatalysts, which is of great significance for high-performance rechargeable ZABs and wearable energy storage devices.

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Section: Results and Discussionmentioning

confidence: 99%

Architecting N-doped Carbon Nanotube-Rich Carbon Nanofibers with Biomimetic Vine-Leaf-Whisker Structure as Robust Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries

Wang,

Chen,

Song

et al. 2024

Inorg. Chem.

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“…Although electrocatalysts with improved utilization of precious metals have enabled ZAFBs with superior performance such as maximum power density exceeding 210 mW cm –2 , , alternative materials made of earth-abundant elements have been receiving more attention in the past decade because of the complete removal of the cost barrier. Tremendous single-component or composite bifunctional electrocatalysts, e.g., transition metals and their compounds, − doped carbon and organic materials, − and single-atom catalysts (SACs), − have been explored in ZAFBs. In 2021, Zhang and co-workers presented a very comprehensive review and “Big Data” analysis of precious-metal-free bifunctional ORR/OER electrocatalysts and revealed statistics-derived insights into the “genome” of a superior bifunctional electrocatalyst, revealing that carbon/transition metal (hydro)oxide composites, in which carbon could be doped nanocarbon or carbon-supported SACs, are among the state-of-the-art bifunctional ORR/OER electrocatalysts with a Δ E approaching 0.65 V (Figure b) .…”

Section: Materials Innovationmentioning

confidence: 99%

Zinc–Air Flow Batteries at the Nexus of Materials Innovation and Reaction Engineering

Liu,

Peng

2023

Ind. Eng. Chem. Res.

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Electrically rechargeable zinc–air flow batteries (ZAFBs) remain promising candidates for large-scale, sustainable energy storage. The implementation of a flowing electrolyte system could mitigate several inherent issues at static conditions, such as zinc dendrite and byproduct accumulation. This review focuses on two important aspects for the development of advanced ZAFBs, materials innovation and reaction engineering, and summarizes corresponding research efforts in improving the anode utilization and reversibility, designing air cathodes with superior bifunctional catalysis toward oxygen reduction and evolution reactions, and engineering/optimizing cell configurations and complementary operation parameters. Finally, an outlook on the remaining challenges and possible directions of codesign for ZAFBs is supplied. We anticipate this review to illuminate the development of modern ZAFBs and other analogous systems at the nexus of materials science and chemical engineering.

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“…Rechargeable zinc-air batteries (ZABs) are highly preferred for their high specific energy density, security, and low contamination. − However, their commercial application is constrained by the inefficiency of oxygen conversion processes at the air electrode. − Currently, Pt-based catalysts are widely applied to oxygen reduction reaction (ORR). − The atomic layer deposition (ALD) method was used to put the Pt nanoparticle load on CNTs by Gan et al, which obtained a Pt/CNT catalyst with excellent ORR catalytic activity. Meanwhile, Ru or Ir-based catalysts are applied to oxygen evolution reaction (OER). ,− A highly universal wet-chemical approach was used to prepare RuO 2 nanowires (NWs) by Yang et al, which showed a lower OER overpotential under acidic and alkaline conditions.…”

Section: Introductionmentioning

confidence: 99%

FeNiCrCoMn High-Entropy Alloy Nanoparticles Loaded on Carbon Nanotubes as Bifunctional Oxygen Catalysts for Rechargeable Zinc-Air Batteries

Cao

Gao

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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An efficient and stable bifunctional oxygen catalyst is necessary to complete the application of the rechargeable zincair battery. Herein, an economical and convenient process was adopted to successfully coat high-entropy alloy Fe 12 Ni 23 Cr 10 Co 55−x Mn x nanoparticles on carbon nanotubes (CNTs). In 0.1 M KOH solution, with a bifunctional oxygen overpotential (ΔE) of only 0.7 V, the catalyst Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT exhibits excellent bifunctional oxygen catalytic performance, exceeding most catalysts reported so far. In addition, the air electrode assembled with this catalyst exhibits high specific capacity (760 mA h g −1 ) and energy density (865.5 W h kg −1 ) in a liquid zinc-air battery, with a long-term cycle stability over 256 h. The density functional theory calculation points out that changing the atomic ratio of Co/Mn can change the adsorption energy of the oxygen intermediate (*OOH), which allows the ORR catalytic process to be accelerated in the alkaline environment, thereby increasing the ORR catalytic activity. This article has important implications for the progress of commercially available bifunctional oxygen catalysts and their applications in zinc-air batteries.

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Efficient synergistic effect of trimetallic organic frameworks derived as bifunctional catalysis for the rechargeable zinc-air flow battery

Cited by 35 publications

References 57 publications

Architecting N-doped Carbon Nanotube-Rich Carbon Nanofibers with Biomimetic Vine-Leaf-Whisker Structure as Robust Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries

Architecting N-doped Carbon Nanotube-Rich Carbon Nanofibers with Biomimetic Vine-Leaf-Whisker Structure as Robust Bifunctional Electrocatalysts for Rechargeable Zn–Air Batteries

Zinc–Air Flow Batteries at the Nexus of Materials Innovation and Reaction Engineering

FeNiCrCoMn High-Entropy Alloy Nanoparticles Loaded on Carbon Nanotubes as Bifunctional Oxygen Catalysts for Rechargeable Zinc-Air Batteries

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