4.6 Article

Synergistically enhanced iron and zinc bimetallic sites as an advanced ORR electrocatalyst for flow liquid rechargeable Zn-air batteries

Related references

Note: Only part of the references are listed.
Review Chemistry, Multidisciplinary

Intrinsic Electrocatalytic Activity Regulation of M-N-C Single-Atom Catalysts for the Oxygen Reduction Reaction

Chang-Xin Zhao et al.

Summary: This Review summarizes the regulation strategies for promoting the intrinsic electrocatalytic ORR activity of M-N-C SACs by modulation of the center metal atoms, the coordinated atoms, the environmental atoms, and the guest groups. The study includes both theoretical calculations and experimental investigations to provide a comprehensive understanding of the structure-performance relationship. Proposed future directions involve developing advanced M-N-C SACs for electrocatalytic ORR and other analogous reactions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Materials Science, Multidisciplinary

Ultrasensitive iron-based magnetic resonance contrast agent constructed with natural polyphenol tannic acid for tumor theranostics

Lu An et al.

Summary: The research demonstrates the potential of using Fe(III) complexes constructed with tannic acid and bovine serum albumin as an alternative T-1 MRI contrast agent and tumor theranostics agent.

SCIENCE CHINA-MATERIALS (2021)

Article Chemistry, Physical

Zinc-iron bimetallic-nitrogen doped porous carbon microspheres as efficient oxygen reduction electrocatalyst for zinc-air batteries

Shiliu Yang et al.

Summary: In this study, a zinc-iron-nitrogen doped porous carbon (FeZnNC) was prepared, with zinc acting as both a porogen and dopant, as well as a structural regulator. Electrochemical measurements demonstrated that FeZnNC exhibited higher limiting current density, positive onset potential, and half-wave potential compared to monometallic-nitrogen doped carbons (mono-MNC), as well as superior electrocatalytic stability. Furthermore, FeZnNC + RuO2 powered rechargeable zinc-air batteries showed longer cycling life than those powered by mono-MNC.

APPLIED SURFACE SCIENCE (2021)

Article Engineering, Environmental

Carbon nanotube-bridged N-doped mesoporous carbon nanosphere with atomic and nanoscaled M (M = Fe, Co) species for synergistically enhanced oxygen reduction reaction

Weicun Jiang et al.

Summary: This study presents a rational design of N-doped carbon nanomaterials with hierarchically structured and active sites for enhanced oxygen reduction reaction. By facile regulation of metal species decoration through simple co-pyrolysis, the resulting catalyst showed superior ORR activity and stability compared to commercial Pt/C. The strategy provided here offers a promising approach to tailor the nanostructure and intrinsic active sites of carbon-based electrocatalysts.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Environmental

Salt assisted fabrication of lignin-derived Fe, N, P, S codoped porous carbon as trifunctional catalyst for Zn-air batteries and water-splitting devices

Ping Li et al.

Summary: In this study, a trifunctional catalyst Fe-N-C/FePx/NPSC was successfully synthesized using a salt-assisted strategy, showing excellent catalytic performance for ORR, OER, and HER, and demonstrating high reliability in flexible Zn-air batteries. This work provides a potential pathway for designing multifunctional carbon-based electrocatalysts using sustainable biomass precursors, which have great potential for high-efficiency zinc-air batteries and water-splitting devices.

CHEMICAL ENGINEERING JOURNAL (2021)

Review Nanoscience & Nanotechnology

Challenges in applying highly active Pt-based nanostructured catalysts for oxygen reduction reactions to fuel cell vehicles

Kensaku Kodama et al.

Summary: Progress has been made in the development of Pt-based nanocatalysts for the oxygen reduction reaction over the past 30 years, with some now in commercial production for PEFCs. However, further improvements in catalytic activity are needed. State-of-the-art catalysts have potential to enhance energy conversion efficiencies and reduce platinum usage in PEFCs, but technical challenges remain for their application in fuel cell vehicles, such as high power density, practical durability, and efficiency.

NATURE NANOTECHNOLOGY (2021)

Article Chemistry, Physical

Impact of Heterometallic Cooperativity of Iron and Copper Active Sites on Electrocatalytic Oxygen Reduction Kinetics

Masaru Kato et al.

Summary: A Cu-, Fe-, and N-doped carbon nanotubes ORR electrocatalyst, (Cu,Fe)-N-CNT, was synthesized in this study, which showed a selective 4e(-) reduction efficiency of O-2 to H2O2 of about 99%, demonstrating higher catalytic activity and selectivity compared to other non-PGM catalysts. The research findings suggest that heterometallic cooperation has a significant impact on the ORR kinetics.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Understanding of Neighboring Fe-N4-C and Co-N4-C Dual Active Centers for Oxygen Reduction Reaction

Huanxin Li et al.

Summary: The study reports FeCo-N-doped hollow carbon nanocages as efficient catalysts with neighboring Fe-N-4-C and Co-N-4-C dual active centers, showing better catalytic activity than Fe single-metal catalyst for oxygen reduction reaction. This highlights the important role of synergy between dual active centers in reducing the reaction energy barriers for ORR.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Operando Cooperated Catalytic Mechanism of Atomically Dispersed Cu-N4 and Zn-N4 for Promoting Oxygen Reduction Reaction

Miaomiao Tong et al.

Summary: The dual-metal single-atom catalyst Cu/Zn-NC shows excellent ORR activity and stability, with operando XANES and DFT calculations revealing the synergistic interaction between Cu-N-4 and Zn-N-4 as well as the transitions between different states.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Trimetallic Spinel NiCo2-xFexO4 Nanoboxes for Highly Efficient Electrocatalytic Oxygen Evolution

Yi Huang et al.

Summary: The study successfully designed and synthesized optimized porous Co-based trimetallic spinel oxide nanoboxes with superior electrocatalytic performance for the oxygen evolution reaction. The structural and compositional advantages enable the nanoboxes to exhibit excellent performance in alkaline electrolyte.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Fe7C3 nanoparticles with in situ grown CNT on nitrogen doped hollow carbon cube with greatly enhanced conductivity and ORR performance for alkaline fuel cell

Lulu Chai et al.

Summary: A new preparation method was used to prepare Fe7C3-doped carbon nanotubes and N-doped hollow carbon, demonstrating excellent ORR activity and stability. The material showed comparable electrochemical performance to commercial Pt/C in alkaline media, indicating great potential for practical applications.

CARBON (2021)

Article Multidisciplinary Sciences

Regulating Fe-spin state by atomically dispersed Mn-N in Fe-N-C catalysts with high oxygen reduction activity

Gege Yang et al.

Summary: The research uncovered the mechanism of the oxygen reduction reaction on dual-metal atomically dispersed Fe,Mn/N-C catalyst, demonstrating its excellent performance and durability in fuel cells and metal-air batteries.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Applied

Insights into efficient transition metal-nitrogen/carbon oxygen reduction electrocatalysts

Hao-Yu Wang et al.

Summary: The importance of accelerating the sluggish oxygen reduction reaction (ORR) process at the cathode with earth-abundant metal-based catalysts for the commercialization of low-temperature polymer electrolyte membrane fuel cells is discussed. Transition metal-nitrogen-carbon (M-N/C) catalysts are considered as the most promising non-precious metal catalysts for ORR, due to their high catalytic activity, long-term stability, and low cost. Different M-N/C catalysts classified by precursors and strategies for design and optimization are highlighted, along with the challenges and possible opportunities for future development of high-performance ORR catalysts.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Physical

Hierarchical N-doped carbon spheres anchored with cobalt nanocrystals and single atoms for oxygen reduction reaction

Changwei Shi et al.

Summary: This study presents an efficient carbon-based catalyst derived from bimetallic zeolitic imidazole frameworks for the oxygen reduction reaction. The ultrasonic strategy enables uniform anchoring of the catalyst on resin microspheres, improving synthesis efficiency and distribution uniformity. By rational design of the catalyst structure, the performance of oxygen reduction reaction is enhanced.

NANO ENERGY (2021)

Article Chemistry, Multidisciplinary

Iron, Nitrogen Co-Doped Carbon Spheres as Low Cost, Scalable Electrocatalysts for the Oxygen Reduction Reaction

Jingyu Feng et al.

Summary: Atomically dispersed transition metal-nitrogen-carbon catalysts are emerging as low-cost electrocatalysts for the oxygen reduction reaction in fuel cells. A synthesis strategy for these catalysts is still required, as well as a greater understanding of their mechanisms. Iron, nitrogen co-doped carbon spheres (Fe@NCS) have been prepared and FeN4 is identified as the main form of iron existing in the obtained Fe@NCS. Starting from Fe2+ and Fe3+ precursors, catalysts show chemical and structural differences. Fe2+@NCS-A displays better catalytic activity for the oxygen reduction reaction and shows potential for developing high-performance, low-cost fuel cell catalysts.

ADVANCED FUNCTIONAL MATERIALS (2021)

Review Chemistry, Multidisciplinary

Recent Developments of Microenvironment Engineering of Single-Atom Catalysts for Oxygen Reduction toward Desired Activity and Selectivity

Longbin Li et al.

Summary: Single-atom catalysts show great potential in oxygen reduction reaction, but microenvironment regulation is necessary to enhance their activity and selectivity. This review presents the mechanisms, evaluation, and characterization of SAAS, along with strategies for microenvironment modulation to improve performance. It also discusses future directions and challenges in ORR SACs.

ADVANCED FUNCTIONAL MATERIALS (2021)

Review Chemistry, Multidisciplinary

Anchoring Sites Engineering in Single-Atom Catalysts for Highly Efficient Electrochemical Energy Conversion Reactions

Yufei Zhao et al.

Summary: This article summarizes the various anchoring sites in single-atom catalysts (SACs) and classifies them based on their impact on catalytic performance. Special emphasis is placed on SACs anchored on carbon- and metal-based materials, with a discussion on the effects of anchoring points on achieving the desirable atomic structure, catalytic performance, and reaction pathways.

ADVANCED MATERIALS (2021)

Review Chemistry, Multidisciplinary

General Design Concept for Single-Atom Catalysts toward Heterogeneous Catalysis

Wenxin Guo et al.

Summary: Single-atom catalysts (SACs) are a promising new material with excellent activity, selectivity, and stability, making them ideal for various important reactions. The precise synthesis of SACs, including the control of coordination structure and choice of different systems, is crucial for their application in different fields. However, challenges in large-scale preparation and industrialization still need to be addressed for the rapid development of SACs.

ADVANCED MATERIALS (2021)

Article Chemistry, Physical

Chemical vapour deposition of Fe-N-C oxygen reduction catalysts with full utilization of dense Fe-N4 sites

Li Jiao et al.

Summary: Replacing scarce and expensive platinum with metal-nitrogen-carbon (M-N-C) catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells has been impeded by the low active site density and site utilization of M-N-C. These limitations have now been overcome by implementing trans-metalation of Zn-N-4 sites into Fe-N-4 sites.

NATURE MATERIALS (2021)

Article Chemistry, Physical

Chemical Vapor Deposition for N/S-Doped Single Fe Site Catalysts for the Oxygen Reduction in Direct Methanol Fuel Cells

Xiaohang Li et al.

Summary: A nitrogen/sulfur codoped single iron site catalyst (Fe-N/S-C) prepared through chemical vapor deposition (CVD) showed superior catalytic activity for the oxygen reduction reaction (ORR) in alkaline media. The tuning of optimal charge distribution of Fe sites by N and S codoping and the suppression of iron-carbide-containing iron clusters formation contributed to the high performance of the catalyst. Further studies demonstrated its promising performance as a cathode catalyst in direct methanol fuel cells.

ACS CATALYSIS (2021)

Review Chemistry, Physical

Molecular Control of Carbon-Based Oxygen Reduction Electrocatalysts through Metal Macrocyclic Complexes Functionalization

Yaoshuai Hong et al.

Summary: Fuel cells and metal-air batteries have great potential for sustainable energy technologies due to their zero pollution and high efficiency. However, the high cost and scarcity of Pt-based materials as cathode catalysts limit their scalability. Recent progress in nonprecious-metal catalysts has addressed some of these challenges.

ADVANCED ENERGY MATERIALS (2021)

Article Chemistry, Physical

Understanding the inter-site distance effect in single-atom catalysts for oxygen electroreduction

Zhaoyu Jin et al.

Summary: Regulating the site density of single-atom catalysts can significantly improve electrocatalysis performance, such as the oxygen reduction reaction. Strong interactions between adjacent Fe-N-4 moieties can enhance intrinsic ORR activity, with a marked improvement continuing until neighbouring Fe atoms approach as close as about 0.7 nm. Identifying the fundamental mechanism of the inter-site distance effect in Fe-N-4 catalysts may maximize the potential of densely populated SACs.

NATURE CATALYSIS (2021)

Review Chemistry, Physical

Recent progress on the synthesis and oxygen reduction applications of Fe-based single-atom and double-atom catalysts

Yan Yan et al.

Summary: Fe-based atomic catalysts show great advantages in the ORR due to high atom-utilization efficiency and well-defined active sites. The high performance is mainly attributed to the coordination condition and electronic structures. Achieving high activity and stability with a high content of metal atoms remains a major challenge.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Review Chemistry, Multidisciplinary

Recent advances of noble-metal-free bifunctional oxygen reduction and evolution electrocatalysts

Chang-Xin Zhao et al.

Summary: The review addresses the design principles for high-performance noble-metal-free bifunctional oxygen electrocatalysts, emphasizing strategies for intrinsic activity regulation and active site integration. Statistical analysis of reported bifunctional electrocatalysts reveals composition-performance relationships and provides guidance for further exploration of emerging candidates. Perspectives for developing advanced bifunctional oxygen electrocatalysts and aqueous rechargeable metal-air batteries are proposed.

CHEMICAL SOCIETY REVIEWS (2021)

Review Chemistry, Multidisciplinary

Pyrolyzed M-Nx catalysts for oxygen reduction reaction: progress and prospects

Ergui Luo et al.

Summary: Recent research efforts on cost-effective catalysts in fuel cells, especially on the cathode, have shown promising advancements in the development of M-N-x/C materials. The focus has been on clarifying the nature of catalytic sites and utilizing advanced characterization tools to optimize synthesis methodologies. Future directions aim to achieve rational and controllable synthesis of catalysts with sufficient active sites and strategies to mitigate catalyst degradation.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

Article Chemistry, Multidisciplinary

Red wine-inspired tannic acid-KH561 copolymer: its adhesive properties and its application in wound healing

Chen Chen et al.

Summary: TA561 copolymer, inspired by the skin care effect of red wine, was developed as an adhesive for various surfaces. It also showed antimicrobial properties and promoted wound healing, indicating its potential for skin preparations as a low-cost, green bioadhesive material.

RSC ADVANCES (2021)

Article Chemistry, Physical

Atomic Fe-Zn dual-metal sites for high-efficiency pH-universal oxygen reduction catalysis

Jie Xu et al.

Summary: The study demonstrated the preparation of Fe-Zn-SA/NC catalyst for efficient ORR reaction in all pH range, showing high half-wave potentials and stability, comparable to Pt/C. The Fe-Zn-SA/NC catalyst also exhibited high power density and durability when assembled into a Zn-air battery, indicating its potential for real energy-related devices. The theoretical calculations attribute the superior catalytic activity of Fe-Zn-SA/NC to the lower energy barriers of ORR at the Fe-Zn-N-6 centers, offering new insights for dual-atom catalysts in energy conversion related catalytic reactions.

NANO RESEARCH (2021)

Article Chemistry, Applied

Role of local coordination in bimetallic sites for oxygen reduction: A theoretical analysis

Yuqi Yang et al.

JOURNAL OF ENERGY CHEMISTRY (2020)

Article Multidisciplinary Sciences

Soft and ion-conducting hydrogel artificial tongue for astringency perception

Jeonghee Yeom et al.

SCIENCE ADVANCES (2020)

Article Chemistry, Multidisciplinary

Stable and Efficient Single-Atom Zn Catalyst for CO2 Reduction to CH4

Lili Han et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Chemistry, Multidisciplinary

Nitrogen-Doped Cobalt Pyrite Yolk-Shell Hollow Spheres for Long-Life Rechargeable Zn-Air Batteries

Xue Feng Lu et al.

ADVANCED SCIENCE (2020)

Review Chemistry, Physical

Atomically dispersed M-N-C catalysts for the oxygen reduction reaction

Hao Xu et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

Review Chemistry, Multidisciplinary

Advanced Electrocatalysts with Single-Metal-Atom Active Sites

Yuxuan Wang et al.

CHEMICAL REVIEWS (2020)

Article Chemistry, Multidisciplinary

Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

Jing Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Void Engineering in Metal-Organic Frameworks via Synergistic Etching and Surface Functionalization

Ming Hu et al.

ADVANCED FUNCTIONAL MATERIALS (2016)