4.6 Article

Tuning the atomic configuration environment of MnN4 sites by Co cooperation for efficient oxygen reduction

Related references

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

Electronic Regulation of ZnCo Dual-Atomic Active Sites Entrapped in 1D@2D Hierarchical N-Doped Carbon for Efficient Synergistic Catalysis of Oxygen Reduction in Zn-Air Battery

Shi-Yi Lin et al.

Summary: In this study, ZnCo dual-atomic sites were incorporated in hierarchical N-doped carbon via a one-step bio-inspired pyrolysis. The resulting ZnCo-N-x system exhibited excellent catalytic characteristics for the ORR. The assembled Zn-air battery showed a maximum power density of 123.7 mW cm(-2) and robust stability.

SMALL (2022)

Article Chemistry, Physical

Atomically Dispersed Fe-Co Dual Metal Sites as Bifunctional Oxygen Electrocatalysts for Rechargeable and Flexible Zn-Air Batteries

Yuting He et al.

Summary: This study presents atomically dispersed Fe-Co dual metal sites derived from Fe and Co codoped zeolitic imidazolate frameworks, showing excellent bifunctional catalytic activity for ORR and OER in alkaline media. The FeCo-NC catalyst exhibits outstanding stability and is integrated into an air electrode for fabricating rechargeable and flexible Zn-air batteries, achieving a high power density and long-cycle stability. This work offers a method to design and synthesize atomically dispersed multi-metal site catalysts for advanced electrocatalysis.

ACS CATALYSIS (2022)

Review Chemistry, Physical

Superiority of Dual-Atom Catalysts in Electrocatalysis: One Step Further Than Single-Atom Catalysts

Runze Li et al.

Summary: This review introduces the recent research progress on how to design new DACs to enhance the performance of electrocatalysis. The advantages of DACs in increasing metal loading, changing the adsorption condition of reactant molecules, reducing the reaction energy barrier, and altering the reaction path are discussed. The catalytic applications in different electrocatalytic reactions are also explored.

ADVANCED ENERGY MATERIALS (2022)

Review Chemistry, Physical

Dual-Metal Atom Electrocatalysts: Theory, Synthesis, Characterization, and Applications

Angus Pedersen et al.

Summary: This review examines the research progress of dual-metal atom catalysts in electrochemistry, including their advantages, current challenges, and future research directions.

ADVANCED ENERGY MATERIALS (2022)

Article Nanoscience & Nanotechnology

Atomically Dispersed Fe-Co Bimetallic Catalysts for the Promoted Electroreduction of Carbon Dioxide

Zhangsen Chen et al.

Summary: This study focuses on the synthesis of atomically dispersed Co, Fe bimetallic catalysts for syngas generation from ECO2RR. The bimetallic catalyst shows enhanced CO production with a boosted Faradaic efficiency and tunable H2/CO ratio in a wide potential window, demonstrating its versatility and potential application in ECO2RR.

NANO-MICRO LETTERS (2022)

Review Chemistry, Physical

Electronic Metal Support Interaction Modulation of Single-Atom Electrocatalysts for Rechargeable Zinc-Air Batteries

Mingjie Wu et al.

Summary: This article provides a detailed review on the recent advances of single-atom catalysts (SACS) with strong electronic metal-support interaction (EMSI) for rechargeable Zn-air batteries. The emphasis is placed on the EMSI forms and design strategies, as well as the importance and impact of the atomic coordinating structure and the substrates on the oxygen electrocatalytic activity and stability. The future directions and perspectives on the development of SACS are also presented.

SMALL METHODS (2022)

Review Chemistry, Multidisciplinary

Effective Approaches for Designing Stable M-Nx/C Oxygen-Reduction Catalysts for Proton-Exchange-Membrane Fuel Cells

Zhengpei Miao et al.

Summary: This article introduces the theoretical fundamentals, degradation mechanisms, and challenges and prospects of designing stable metal-nitrogen-carbon catalysts.

ADVANCED MATERIALS (2022)

Article Chemistry, Multidisciplinary

Theoretically Revealed and Experimentally Demonstrated Synergistic Electronic Interaction of CoFe Dual-Metal Sites on N-doped Carbon for Boosting Both Oxygen Reduction and Evolution Reactions

Xuyan Zhou et al.

Summary: Heteronuclear double-atom catalysts modify the charge density of active metal sites and enhance catalytic activities. CoFe-N-C exhibits exceptional ORR and OER electro-catalytic activities in alkaline media.

NANO LETTERS (2022)

Article Chemistry, Applied

The ORR electron transfer kinetics control via Co-Nx and graphitic N sites in cobalt single atom catalysts in alkaline and acidic media

Tong Shen et al.

Summary: This study successfully enhances the activity of cobalt single atoms on carbon nanosheets by adjusting the content of different nitrogen components, leading to the construction of efficient catalysts. The research reveals that Co-N-x and graphitic N are the main active sites, and the kinetics of oxygen reduction reaction in alkaline media can be positively influenced by the conductivity of the catalysts.

JOURNAL OF ENERGY CHEMISTRY (2022)

Review Chemistry, Applied

MOFs fertilized transition-metallic single-atom electrocatalysts for highly-efficient oxygen reduction: Spreading the synthesis strategies and advanced identification

Kexin Song et al.

Summary: MOFs have been widely used for the preparation of transition-metallic single-atom electrocatalysts (TM-SACs), which have achieved great progress in terms of high activity, high loading, and high stability. Different strategies for preparing and modifying TM-SACs using MOFs have been summarized to guide the development of TM-SACs with optimal performance.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Multidisciplinary

Identification of the Highly Active Co-N4 Coordination Motif for Selective Oxygen Reduction to Hydrogen Peroxide

Shanyong Chen et al.

Summary: The research reveals that pyrrole-type CoN4 and pyridine-type CoN4 are responsible for 2e- ORR and 4e- ORR reactions, respectively. Pyrrole-type CoN4 catalyst exhibits excellent H2O2 selectivity and yield in acid media. This study is significant for understanding the structure-function relationship of Co-N4 single-atom catalysts and improving H2O2 production.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

Article Chemistry, Applied

Nest-type NCM ⊂ Pt/C with oxygen capture character as advanced electrocatalyst for oxygen reduction reaction

Teng Chen et al.

Summary: A unique nest-type catalyst has been designed with a nest of oxygen capture surrounding catalytic Pt centers, which shows significantly improved performance for oxygen reduction reaction (ORR). The catalyst, denoted as NCM c Pt/C, is constructed with a nitrogen-doped carbon matrix (NCM) derived from the controlled carbonization of PANI precursor, covering Pt/C catalyst. The unique structure of the catalyst enables it to capture oxygen in both air and acidic electrolyte, and offers special electronic modulation on Pt centers for modified ORR kinetics. Compared with Pt/C, the NCM c Pt/C catalyst exhibits higher turnover frequency and enhanced specific activity for ORR, along with improved cycling stability.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Applied

Bifunctional oxygen electrode cobalt-nickel sulfides catalysts originated from intercalated LDH precursors

Xiaofei Gong et al.

Summary: Bimetallic cobalt-nickel sulfide nanoparticles anchored on S-, N-codoped holey carbon nanosheets showed a hydrangea-like morphology. The electrocatalysts exhibited enhanced electrocatalytic activity and stable bifunctional performance for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The structure and performance of the catalysts were influenced by the sulfurization temperature.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Applied

Regeneration of single-atom catalysts deactivated under acid oxygen reduction reaction conditions

Chang-Xin Zhao et al.

Summary: The regeneration of single-atom catalysts, such as Fe-N-C, is feasible through a facile annealing regeneration strategy, allowing the recovered activity to surpass that of the deactivated catalyst. This pioneering approach of selfetching the surface carbon layer to expose buried single-atom sites shows promise in addressing rapid deactivation under working conditions.

JOURNAL OF ENERGY CHEMISTRY (2022)

Review Chemistry, Applied

Iron (Fe, Ni, Co)-based transition metal compounds for lithium-sulfur batteries: Mechanism, progress and prospects

Junhao Li et al.

Summary: Lithium-sulfur batteries have great potential as high-energy-density secondary batteries, but the shuttle effects of lithium polysulfides and sluggish redox kinetics limit their commercialization. This review focuses on iron-based compounds as additives to improve the electrochemical performance of the Li-S system. Iron-based compounds, such as oxides, sulfides, nitrides, phosphides, and carbides, have unique electronic structures and tunable properties, making them promising materials for LSBs. Various strategies, including designing special micro/nanostructures and engineering defect concentrations and band structures, are discussed to enhance the performance and stability of LSBs.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Physical

Oxygen vacancy enabled fabrication of dual-atom Mn/Co catalysts for high-performance lithium-sulfur batteries

Shaoming Qiao et al.

Summary: In this study, a highly active Mn/Co-N-C catalyst with dual atom Mn/Co active sites coordinated on a N doped carbon support was reported. The catalyst was prepared by using a specific initiator and carbon support material. The Mn/Co-N-C catalyst exhibited excellent performance in lithium sulfur batteries, showing high capacity and cycle stability. Therefore, this study provides an effective new strategy for preparing highly active catalysts.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Article Chemistry, Multidisciplinary

Atomically Dispersed Co2-N6 and Fe-N4 Costructures Boost Oxygen Reduction Reaction in Both Alkaline and Acidic Media

Zhe Wang et al.

Summary: Researchers have developed a new ternary-atom catalyst with Co-Co dimers and Fe single sites, demonstrating superior performance in ORR. By controlling the local configuration of atoms, researchers have enhanced the performance of the catalyst, making it a promising alternative to platinum for driving zinc-air batteries.

ADVANCED MATERIALS (2021)

Review Chemistry, Multidisciplinary

Advanced Platinum-Based Oxygen Reduction Electrocatalysts for Fuel Cells

Lei Huang et al.

Summary: Fuel cells are cutting-edge energy technologies hindered by expensive Pt catalysts for the ORR at the cathode. Efforts are focused on optimizing Pt-based nanostructures and functional carriers to achieve low-cost and high-activity catalysts. Improved Pt utilization and surface area, reduced consumption and costs, and enhanced stability are key factors for commercializing fuel cells.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

Review Chemistry, Multidisciplinary

Single Atom Catalysts for Fuel Cells and Rechargeable Batteries: Principles, Advances, and Opportunities

Yuchao Wang et al.

Summary: This paper discusses the importance of developing efficient and robust electrochemical energy storage systems, as well as the role of single atom catalysts in improving device performance. Additionally, it summarizes the working principles and challenges of next-generation electrochemical energy storage and conversion devices.

ACS NANO (2021)

Review Chemistry, Multidisciplinary

Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

Chi-Yeong Ahn et al.

Summary: Research has focused on developing Pt-based catalysts with higher performance and durability, particularly by increasing ECSA and intrinsic activity. However, most achievements are limited to half-cells and may not be directly applicable to real-life fuel cell applications, indicating the need for further improvement in catalytic performance.

CHEMICAL REVIEWS (2021)

Article Chemistry, Physical

Mn-N4 Oxygen Reduction Electrocatalyst: Operando Investigation of Active Sites and High Performance in Zinc-Air Battery

Xu Han et al.

Summary: Researchers have successfully developed a manganese oxygen reduction electrocatalyst with excellent performance in the alkaline oxygen reduction reaction, where the low-valence MnL+-N-4 is identified as the active site. Density functional theory reveals that facile electron transfer from MnL+-N-4 to adsorbed *OH species is crucial for its excellent electrocatalytic performance.

ADVANCED ENERGY MATERIALS (2021)

Review Chemistry, Multidisciplinary

Oxygen Reduction Electrocatalysts toward Practical Fuel Cells: Progress and Perspectives

Shahid Zaman et al.

Summary: Fuel cells show great potential as a renewable energy technology, but face challenges due to high cost and poor reliability of cathodic electrocatalysts for the oxygen reduction reaction (ORR). This review emphasizes recent progress of ORR electrocatalysts in fuel cells and highlights issues with activity translation from laboratory testing to practical applications. Future efforts should focus on large-scale preparation, unified assessment criteria, advanced interpretation techniques, advanced simulation and artificial intelligence to advance efficient ORR electrocatalysts in fuel cells.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Resolving the Dilemma of Fe-N-C Catalysts by the Selective Synthesis of Tetrapyrrolic Active Sites via an Imprinting Strategy

Davide Menga et al.

Summary: By identifying a paradigm shift in the synthesis of Fe-N-C catalysts and applying fundamental principles, it was possible to overcome the dilemma of low active site densities. Through successive low- and high-temperature ion exchange reactions, a high loading of atomically dispersed Fe was achieved, resulting in a phase-pure catalyst entirely composed of tetrapyrrolic Fe-N-4 sites. The density of these sites was significantly higher than previously reported, showcasing a promising advancement in single-site fuel cell catalysts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Physical

Transition-Metal- and Nitrogen-Doped Carbide-Derived Carbon/Carbon Nanotube Composites as Cathode Catalysts for Anion-Exchange Membrane Fuel Cells

Jaana Lilloja et al.

Summary: The transition-metal- and nitrogen-codoped carbide-derived carbon/carbon nanotube composites have been prepared and characterized as cathode catalysts in anion-exchange membrane fuel cells. These catalysts exhibit excellent electrocatalytic performance, stability, and have a good combination of micro- and mesoporous structures. The CoFe-N-CDC/CNT material shows a current density close to 500 mA cm(-2) at 0.75 V and a peak power density exceeding 1 W cm(-2) in H-2/O-2 AEMFCs.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Promoting Atomically Dispersed MnN4 Sites via Sulfur Doping for Oxygen Reduction: Unveiling Intrinsic Activity and Degradation in Fuel Cells

Lin Guo et al.

Summary: A sulfur-doped Mn-N-C catalyst was synthesized through an effective adsorption-pyrolysis process, exhibiting favorable oxygen reduction reaction (ORR) activity in acidic media. The catalyst showed enhanced performance and stability in comparison to the S-free catalyst, with insights provided into catalyst degradation associated with Mn oxidation and agglomeration. The promoted ORR activity was mainly attributed to the spatial effect from the repulsive interaction between the ORR intermediates and adjacent S dopants.

ACS NANO (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 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

3D star-like atypical hybrid MOF derived single-atom catalyst boosts oxygen reduction catalysis

Lei Zhou et al.

Summary: A 3D hybrid MOF composed of cobalt doped ZIF-L and ZIF-8 was demonstrated as an advanced precursor for making Co SACs to greatly boost ORR. The newly synthesized Co-SA-N-C exhibited excellent ORR activity, outperforming commercial Pt/C and showing high performance in acidic medium.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Applied

TMN4 complex embedded graphene as bifunctional electrocatalysts for high efficiency OER/ORR

Zhe Xue et al.

Summary: In this study, the OER/ORR electrocatalytic activity of TMN4@G system was systematically investigated using DFT calculations. It was found that IrN4@G is a very promising bifunctional catalyst with extremely low overpotentials for both OER and ORR, mainly attributed to the synergistic effect of Ir and N. By constructing 2D activity volcano plots, the limiting overpotentials of TMN4@G system were obtained.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Physical

3d-Orbital Occupancy Regulated Ir-Co Atomic Pair Toward Superior Bifunctional Oxygen Electrocatalysis

Meiling Xiao et al.

Summary: In this study, the electronic configuration of Co d-orbital was modulated by constructing the Ir-Co atomic pair, leading to boosted bifunctional activity. The developed dual-atom IrCo-N-C catalyst exhibited unprecedented activity, outperforming commercial Pt/C and Ir/C benchmarks.

ACS CATALYSIS (2021)

Article Chemistry, Applied

Oxygen vacancies engineering by coordinating oxygen-buffering CeO2 with CoOx nanorods as efficient bifunctional oxygen electrode electrocatalyst

Haihong Zhong et al.

Summary: The study fabricated a CeO2 decorated CoOx/RGO composite via a surfactant-assisted route and found that the introduction of CeO2 and oxygen vacancies effectively enhanced the electrocatalytic activity, leading to efficient and stable bifunctional electrocatalysis in alkaline electrolyte.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Applied

Single-atom catalysts with anionic metal centers: Promising electrocatalysts for the oxygen reduction reaction and beyond

Jinxing Gu et al.

Summary: Ongoing efforts focus on developing single-atom catalysts (SACs) for oxygen reduction reaction (ORR) with anionic metal centers, which shows promising performance. Anionic Au and Co metal centers exhibit comparable or better limiting potentials towards ORR than conventional Pt-based catalysts. Additionally, anionic Os and Re metal centers can electrochemically catalyze the nitrogen reduction reaction (NRR) with potential close to that of Ru(0001).

JOURNAL OF ENERGY CHEMISTRY (2021)

Review Chemistry, Physical

Single-Atom Materials: Small Structures Determine Macroproperties

Jiarui Yang et al.

Summary: Single-atom materials (SAMs) have been widely studied in various fields, and their high performance is largely attributed to the microstructure inside the SAM. Achieving the goal of regulating structures and understanding the relationship between macroproperties and small structures are essential but require further efforts in this field. This review comprehensively summarizes and discusses the regulation on microstructures, the characterization of microstructures, and the relationship between macroproperties and small structures, mainly focusing on the application of SAM in catalysts. Proposed challenges and future developments aim to provide an overall view and guidance for future research in this area.

SMALL STRUCTURES (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)

Review Chemistry, Multidisciplinary

Synergistically Interactive Pyridinic-N-MoP Sites: Identified Active Centers for Enhanced Hydrogen Evolution in Alkaline Solution

Di Zhao et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

Identification of Catalytic Sites for Oxygen Reduction in Metal/Nitrogen-Doped Carbons with Encapsulated Metal Nanoparticles

Ming-Xi Chen et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Physical

Insights into KMnO4 etched N-rich carbon nanotubes as advanced electrocatalysts for Zn-air batteries

Shijie Yi et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Editorial Material Chemistry, Physical

Emerging Materials Methods for Renewable Energy

Qiang Zhang et al.

SMALL METHODS (2020)

Article Chemistry, Multidisciplinary

High-purity pyrrole-type FeN4 sites as a superior oxygen reduction electrocatalyst

Nan Zhang et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Chemistry, Multidisciplinary

Construction of a sp3/sp2 Carbon Interface in 3D N-Doped Nanocarbons for the Oxygen Reduction Reaction

Jian Gao et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Multidisciplinary

Climbing the Apex of the ORR Volcano Plot via Binuclear Site Construction: Electronic and Geometric Engineering

Meiling Xiao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)