Related references
Note: Only part of the references are listed.
Article
Chemistry, Physical
Dongping Xue et al.
Summary: This study demonstrates the electron spin-state modulation of Fe active centers in SA Fe-N-C catalysts, resulting in improved ORR activity. By converting defect-rich pyrrolic N-coordinated FeNx sites, the low-spin state of Fe active centers can be transformed into a high-spin state, enhancing the ORR reaction kinetics significantly. The designed Fe-N4-HS catalyst shows comparable ORR activity to commercial Pt/C catalyst and exhibits higher performances in proton exchange membrane fuel cells and zinc-air batteries.
Article
Chemistry, Multidisciplinary
Zhixiu Lu et al.
Summary: This study demonstrates a comprehensive regulation on the interfacial/bulk electrochemistry of hard carbons through atomic Zn doping, resulting in record-high reversible capacity, decent initial Columbic efficiency, remarkable rate capability, and excellent low-temperature capacity, outperforming the state-of-the-art literature. It reveals that Zn doping induces a local electric field for fast Na+ transportation and catalyzes the formation of a robust solid-electrolyte interphase, explaining the boosted electrochemical performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zuozheng Xu et al.
Summary: This work proposes a light-driven atomic assembly proposal to optimize the spin-entropy-related orbital interaction and charge transfer in electrocatalysis. The introduction of fluorine atoms effectively softens the bonding interaction in the solution, allowing for the formation of orderly atomic-hybridized catalysts. The time-related elemental analysis shows that the dynamic dissolution/redeposition of Ir clusters leads to a reintegration of the reaction pathway with a lower activation energy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yibo Wang et al.
Summary: In this study, a strategy to regulate the local spin state of Fe-N-C through manipulating the crystal field and magnetic field is proposed. The spin state of atomic Fe can be controlled from low spin to intermediate spin and high spin. The high spin Fe-N-C electrocatalyst exhibits the highest oxygen electrocatalytic activities, thanks to the optimization of O2 adsorption and the promotion of the rate-determining step. Moreover, the high spin Fe-N-C-based rechargeable zinc-air battery demonstrates a high power density (170 mW cm(-2)) and good stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Tianze Wu et al.
Summary: Water electrolysis is a promising technique for carbon neutral hydrogen production, but the development of robust and low-cost anode catalysts is still a challenge. This study reports the unique reconstruction behaviors of a pre-catalyst, CoFe2S4, and its reconstruction chemistry for high oxygen evolution reaction (OER) activity. The reconstructed CoFe2S4 shows an interface spin channel that optimizes the energetics of OER steps and facilitates spin sensitive electron transfer to reduce the kinetic barrier of O-O coupling. The advantage of this reconstruction is also demonstrated in a membrane electrode assembly (MEA) electrolyzer.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Peilin Huang et al.
Summary: This study focuses on the dynamic orbital hybridization approach to enhance the reaction kinetics in oxygen evolution reaction (OER). By reconfiguring the spin configuration in metal-organic frameworks (MOFs) through bonding with dynamic magnetic ions in electrolytes under alternating electromagnetic field stimulation, the spin-renormalized MOFs demonstrate a significant improvement in mass activity. These findings provide insights into reconfiguring spin-related catalysts to accelerate the OER kinetics.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Xuelin Sheng et al.
Summary: Effective adjustment of the internal electron spin state and the external charge density of metal-nitrogen complex carbon (M/NC) electrocatalysts is crucial for enhancing their catalytic activity. In this study, a FeMn/NC dual-atom catalyst with a FeN4-MnN4 local structure is synthesized, showing excellent oxygen reduction reaction (ORR) performance in acidic, neutral, and alkaline environments. The Zn-air battery based on the FeMn/NC catalyst exhibits high open-circuit voltage, satisfactory output power density, and strong charge-discharge stability, outperforming commercial Pt/C. The exceptional catalytic performance is attributed to the modification of charge environment and the transition of the 3d orbital spin state at the metal center, demonstrated by density functional theory calculations. This work provides valuable insights into the rational design of bimetallic catalysts with remarkable ORR capability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
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.
Review
Chemistry, Multidisciplinary
Mingquan Yu et al.
Summary: Water electrolysis for green hydrogen production is crucial for a circular economy, but supply of sustainable electricity and availability of OER electrocatalysts are major bottlenecks. Co-, Ni-, and Fe-based catalysts are considered potential candidates to replace noble metals due to their versatility, abundance, and tunable electron configurations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Engineering, Environmental
Jing Wang et al.
Summary: This review summarizes the preparation strategies and characterization techniques of dual-metal sites, emphasizing the importance of theoretical modeling and simulation. It highlights the critical roles and unique traits of dual-atom sites in electrocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Xiaohong Xie et al.
Summary: This article reviews the active sites for three mainstream non-precious metal catalysts for the oxygen evolution reaction (OER) and discusses the degradation mechanisms and mitigation strategies for these sites. Additionally, it explores the gaps between the research and development of non-precious metal catalysts for the OER and their application in practical devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yan Li et al.
Summary: In this study, a viable strategy to manipulate the local spin state of isolated iron sites through S-coordinated doping was reported. The results showed that the formation of a medium-spin-state of Fe induced by S coordination is beneficial for facilitating the e(g) electrons to penetrate the antibonding pi-orbital of nitrogen, leading to a record-high current density and high NH3 selectivity.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Lianghao Song et al.
Summary: In this study, a FeCo-Co bifunctional catalyst was developed through an alloying-degree control strategy. The catalyst showed excellent performance in both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), making it suitable for high-performance zinc-air batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Kang Liu et al.
Summary: This study provides a model to understand the catalytic activity of single-atom M-N-C catalysts in the oxygen reduction reaction. The authors demonstrate the regulation of divacancy defects on Fe-N-4 site ORR activity and identify the origin of Fe-N-4 ORR activity through the hybridization between Fe 3dz(2), 3dyz (3dxz) and O-2 pi* orbitals.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zhihao Pei et al.
Summary: In this study, a catalyst with atomically dispersed Ni/Co dual-metal sites anchored on nitrogen-doped carbon hollow prisms was successfully designed and synthesized. This catalyst exhibits superior electrocatalytic activity and kinetics, and density functional theory calculations showed strong synergistic interactions and optimized electronic structure, resulting in reduced reaction energy barrier.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Lingyou Zeng et al.
Summary: In water splitting electrolyzers, platinum single-atom catalysts show remarkable catalytic activity and stability for anodic oxygen evolution. Their superior performance is attributed to the unique coordination with cobalt hydrogen phosphate and the suppression of soluble platinum species. Utilizing alkaline water electrolyzers with ultra-low platinum loading achieves industrial-level current density and high durability.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yafei Zhao et al.
Summary: A facile chemical vapor deposition strategy was reported to synthesize single-Ni atoms decorated hollow S/N-doped carbon spheres. The obtained catalyst exhibited outstanding performance for alkaline oxygen evolution reaction and the electrocatalytic mechanism was revealed by experiments and theoretical calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Zeyu Xiao et al.
Summary: Compared to most single-atom catalysts, dual-atom catalysts demonstrate better catalytic performance. In this study, atomically dispersed FeCu-NC catalyst was synthesized and showed superior half-wave potential and peak power density in alkaline medium, highlighting the synergistic mechanism of dual-atom sites in improving catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Junming Zhang et al.
Summary: This review provides a comprehensive introduction to the importance of adsorption energy in electrochemical reactions and its role in bridging the gap between catalyst structure and activity. Focusing on oxygen electrocatalysis, it discusses the selection of adsorption energy as an activity descriptor, intrinsic and empirical relationships related to adsorption energy, the link between structure and electrocatalytic performance, approaches to obtain adsorption energy, strategies to improve catalytic activity by modulating adsorption energy, extrinsic influences on adsorption energy from the environment, and methods to bypass linear scaling relations of adsorption energy. An outlook is also provided, highlighting possible future investigations related to the obstacles between adsorption energy and electrocatalytic performance.
Article
Chemistry, Multidisciplinary
Xiao Wang et al.
Summary: In this study, an iron single-atom catalyst confined in a covalent organic framework exhibited outstanding oxygen evolution reaction (OER) performance, with high mass activity and record-low overpotential and Tafel slope. This work provides design strategies for advanced electrocatalysis through the prudent confinement of unusually coordinated single-atom catalysts.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jing Wang et al.
Summary: A newly explored zinc-based single-atom catalyst with a unique N-2-Zn-B-2 configuration demonstrates impressive ORR activity and remarkable long-term stability, achieved through manipulating the s-band by constructing a B,N co-coordinated Zn-B/N-C catalyst.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
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.
Article
Chemistry, Multidisciplinary
Riccardo Ruixi Chen et al.
Summary: Surface-reconstructed SmCo5/CoOxHy catalysts with polarized spins at the FM/oxyhydroxide interface exhibit excellent OER activity, which can be further aligned through a magnetization process. The enhanced OER performance of magnetized SmCo5/CoOxHy catalysts can be maintained up to 60 degrees C when operated at elevated temperatures to simulate real-life conditions of water electrolyzers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Physical
Siqi Niu et al.
Summary: By preparing a RuO2/(Co,Mn)3O4 nanocomposite with low Ru loading, the catalytic activity and stability of oxygen evolution reaction in acidic media have been significantly improved. The catalyst shows high activity at 10 mA/cm(2), providing a new energy-efficient design strategy for energy conversion applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Hongguan Li et al.
Summary: This study reveals the significant impact of the cooperative interplay between charge itineration and spin-polarization of electrons on catalytic behavior through density functional theory calculations. The Fe-Ni atomic pair is reported as a superior bifunctional catalyst for high performance ORR and OER, with a very small potential difference (Delta E) of 0.691 V. The coexistence of Fe 3d itinerant charge and moderate spin polarization is responsible for the superior functional catalytic activity for the Fe-Ni atomic pairs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Jing Wang et al.
Summary: This study systematically investigated Zn-Co bimetallic isolation using density functional theory and found that the ZnCoN6-gra(I) configuration exhibited the strongest interaction with oxygen-containing species. By optimizing the free energy change of these species, the volcano peaks of ORR and OER were effectively brought closer, enabling a promising bifunctional catalyst with durability in both acidic and alkaline media.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jingjie Ge et al.
Summary: The rational design of FM-AFM core-shell catalysts enhances electron transport efficiency and improves OER activity, with critical factors including shell thickness and magnetic domain structure.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
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.
Review
Chemistry, Physical
Changshui Wang et al.
Summary: Self-supported catalysts play a crucial role in OER with improved conductivity, nanostructure, and active sites. Recent research has focused on diverse synthetic methods and strategies to enhance OER catalytic activity and stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Meiqi Zhao et al.
Summary: The Fe-1/d-CN catalyst demonstrates excellent ORR activity across different pH ranges, surpassing almost all reported non-noble electrocatalysts and commercial Pt/C catalyst. Its exceptional performance can be attributed to the regulation of Fe centers' electronic structure and remarkable electron/proton transport capability derived from defects and porous features. Moreover, the catalyst shows remarkable durability and performs well in quasi-solid-state Zn-air batteries, displaying high OCV and power density.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Zhi-Peng Wu et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Huayang Zhang et al.
ADVANCED MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Guoqiang Shen et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Multidisciplinary Sciences
Shuai Liu et al.
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Yong-Sheng Wei et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Multidisciplinary Sciences
Kejun Chen et al.
NATURE COMMUNICATIONS
(2020)
Review
Materials Science, Multidisciplinary
Yongchao Yang et al.
Review
Chemistry, Applied
Jing Zhang et al.
CHINESE JOURNAL OF CATALYSIS
(2020)
Article
Multidisciplinary Sciences
Lu Zhao et al.
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Nitish Govindarajan et al.
Article
Chemistry, Multidisciplinary
Jiazhan Li et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Multidisciplinary Sciences
Linlin Cao et al.
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Ziyang Lu et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Shaikshavali Petnikota et al.
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Xiaoqian Wang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Multidisciplinary Sciences
Gang Zhou et al.
NATURE COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Federico Calle-Vallejo et al.
Article
Chemistry, Physical
Ziyang Lu et al.
Article
Multidisciplinary Sciences
Linsey C. Seitz et al.
Article
Chemistry, Multidisciplinary
Charles C. L. McCrory et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Article
Metallurgy & Metallurgical Engineering
M. Ramachandran et al.
MINERALS & METALLURGICAL PROCESSING
(2015)
Article
Materials Science, Multidisciplinary
A. S. Ingason et al.
