Fe-N-C catalysts decorated with oxygen vacancies-rich CeOx to increase oxygen reduction performance for Zn-air batteries

Tu, Feng-Di; Wu, Zi-Yun; Guo, Pan; Shen, Lixiao; Zhang, Ziyu; Dai, Yun‐Kun; Ma, Ming; Liu, Jing; Xu, Bin; Zhang, Yun-Long; Zhao, Lei; Wang, Zhenbo

doi:10.1016/j.jcis.2023.01.057

Cited by 17 publications

(12 citation statements)

References 51 publications

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“…Lately, many precious-metal-free catalysts with outstanding catalytic activity and low cost have replaced Pt-based catalysts . Because of their affordability, availability, adjustable shape, sufficient electrical conductivity, high chemical stability, and easy doping characteristics, porous carbonaceous materials have received utmost attention as electrocatalysts for the ORR. − The catalytic activity of pure carbon compounds is still inadequate, nevertheless. Aside from enhancing the specific surface area (SSA), atom doping carbon materials can also enhance their catalytic activity .…”

Section: Introductionmentioning

confidence: 99%

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Duan,

Wang,

Sun

et al. 2023

ACS Appl. Nano Mater.

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The evolution of highly active dual-functional catalysts is critical to zinc–air batteries (ZAB). Herein, three-dimensional Fe–N/P-co-doped graphene (3D Fe–N/P-G) materials with a high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) response are prepared by a molten salt protection method with KCl. The 3D Fe–N/P-G exhibits a large Brunauer–Emmett–Teller (BET) surface area and a dense network of pores for improved mass transfer efficiency. The addition of P atoms is able to produce a synergistic effect that improves the ORR catalytic activity of the 3D Fe–N/P-G catalyst. Regarding electrical efficiency, the ORR half-wave potential (E 1/2) of 3D Fe–N/P-G catalytic is 0.860 V vs reversible hydrogen electrode (RHE) and the electron transfer number is 3.98 from 0.4 to 0.7 V vs RHE. The small overvoltage (ΔE = E j = 10 – E 1/2) of 3D Fe–N/P-G is 0.77 V. Additionally, the zinc–air battery with 3D Fe–N/P-G as a trigger for the cathode has high power density (170 mW cm–2), specific capacity (671 mAh g–1), small charge/discharge polarization, and outstanding prolonged stability. It is suggested that 3D Fe–N/P-G is a powerful bifunctional cathode ZAB catalyst.

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Section: Introductionmentioning

confidence: 99%

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Duan,

Wang,

Sun

et al. 2023

ACS Appl. Nano Mater.

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“…7,8 The use of 2D materials in catalysis has emerged as a natural application due to the high surface area-to-volume ratio and the potential to tune their properties through defect engineering. 9 For example, 2D materials have been employed as catalysts for diverse chemical reactions, 10 including but not limited to the oxygen reduction reaction (ORR), 11,12 hydrogen evolution reaction (HER), 13,14 and oxygen evolution reaction (OER). 15,16 For instance, Tu et al developed a highly efficient electrocatalyst for the ORR by decorating 2D carbon nanosheets with CeO x particles, 12 which led to a significant enhancement of the ORR performance.…”

Section: Introductionmentioning

confidence: 99%

“…Two-dimensional (2D) materials have attracted considerable attention as interesting candidates for numerous applications since the discovery of graphene. , Theoretical studies and experimental studies have contributed to expand the number of known 2D materials and improve our atomistic understanding of their electronic, , optical, , and structural properties. , The use of 2D materials in catalysis has emerged as a natural application due to the high surface area-to-volume ratio and the potential to tune their properties through defect engineering . For example, 2D materials have been employed as catalysts for diverse chemical reactions, including but not limited to the oxygen reduction reaction (ORR), , hydrogen evolution reaction (HER), , and oxygen evolution reaction (OER). , …”

Section: Introductionmentioning

confidence: 99%

“…9 For example, 2D materials have been employed as catalysts for diverse chemical reactions, 10 including but not limited to the oxygen reduction reaction (ORR), 11,12 hydrogen evolution reaction (HER), 13,14 and oxygen evolution reaction (OER). 15,16 For instance, Tu et al developed a highly efficient electrocatalyst for the ORR by decorating 2D carbon nanosheets with CeO x particles, 12 which led to a significant enhancement of the ORR performance. This improvement was attributed to the presence of oxygen vacancies, facilitating O 2 adsorption.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Tu et al developed a highly efficient electrocatalyst for the ORR by decorating 2D carbon nanosheets with CeO x particles, which led to a significant enhancement of the ORR performance. This improvement was attributed to the presence of oxygen vacancies, facilitating O 2 adsorption.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Theoretical Tuning of the Cu/S Ratio on Two-Dimensional CuS_x Materials for the CO₂ Electrochemical Reduction Reaction

Fonseca,

Verga,

Da Silva

2023

J. Phys. Chem. C

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Collective Effect in a Multicomponent Ensemble Combining Single Atoms and Nanoparticles for Efficient and Durable Oxygen Reduction

Xu,

Li,

et al. 2024

Angewandte Chemie

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Metal single‐atom catalysts represent one of the most promising non‐noble metal catalysts for the oxygen reduction reaction (ORR). However, they still suffer from insufficient activity and, particularly, durability for practical applications. Leveraging density functional theory (DFT) and machine learning (ML), we unravel an unexpected collective effect between FeN4OH sites, CeN4OH motifs, Fe nanoparticles (NPs), and Fe‐CeO2 NPs. The collective effect comprises differently‐weighted electronic and geometric interactions, whitch results in significantly enhanced ORR activity for FeN4OH active sites with a half‐wave potential (E1/2) of 0.948 V versus the reversible hydrogen electrode (VRHE) in alkaline, relative to a commercial Pt/C (E1/2, 0.851 VRHE). Meanwhile, this collective effect endows the shortened Fe‐N bonds and the remarkable durability with negligible activity loss after 50,000 potential cycles. The ML was used to understand the intricate geometric and electronic interactions in collective effect and reveal the intrinsic descriptor to account for the enhanced ORR performance. The universality of collective effect was demonstrated effective for the Co, Ni, Cu, Cr, and Mn‐based multicomponent ensembles. These results confirm the importance of collective effect to simultaneously improve catalytic activity and durability.

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Fe-N-C catalysts decorated with oxygen vacancies-rich CeOx to increase oxygen reduction performance for Zn-air batteries

Cited by 17 publications

References 51 publications

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Theoretical Tuning of the Cu/S Ratio on Two-Dimensional CuS_x Materials for the CO₂ Electrochemical Reduction Reaction

Collective Effect in a Multicomponent Ensemble Combining Single Atoms and Nanoparticles for Efficient and Durable Oxygen Reduction

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Fe-N-C catalysts decorated with oxygen vacancies-rich CeOx to increase oxygen reduction performance for Zn-air batteries

Cited by 17 publications

References 51 publications

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Fe–N/P-co-Doped Three-Dimensional Graphene Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Theoretical Tuning of the Cu/S Ratio on Two-Dimensional CuSx Materials for the CO2 Electrochemical Reduction Reaction

Collective Effect in a Multicomponent Ensemble Combining Single Atoms and Nanoparticles for Efficient and Durable Oxygen Reduction

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Product

Resources

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Theoretical Tuning of the Cu/S Ratio on Two-Dimensional CuS_x Materials for the CO₂ Electrochemical Reduction Reaction