4.7 Article

String of ZIF-derived hollow beaded nanocage embedded into carbon nanofiber with intensified exposed Co-Nx sites for efficient oxygen catalysis in various fuel cell devices

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Environmental

Interface engineering of Co3O4/CeO2 heterostructure in-situ embedded in Co/N-doped carbon nanofibers integrating oxygen vacancies as effective oxygen cathode catalyst for Li-O2 battery

Shiquan Guo et al.

Summary: This study develops a simple electrospinning strategy to construct Co3O4/CeO2 heterostructure embedded in Co/N-doped carbon nanofiber, which exhibits coupled heterogeneous interface and highly concentrated oxygen vacancies for fast charge transfer and altered electronic state, leading to enhanced electrocatalytic performance of Li-O2 batteries.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Chemistry, Analytical

Highly Sensitive Chemiluminescent Immunoassay of Mycotoxins Using ZIF-8-Derived Yolk-Shell Co Single-Atom Site Catalysts as Superior Fenton-like Probes

Hui Ouyang et al.

Summary: A study on the preparation and application of yolk-shell Co SASCs highlights the potential of direct chemical interactions for the formation of highly active catalysts and their use in catalysis and chemiluminescence.

ANALYTICAL CHEMISTRY (2022)

Article Engineering, Environmental

Multivalent CoSx coupled with N-doped CNTs/Ni as an advanced oxygen electrocatalyst for zinc-air batteries

Li-Na Lu et al.

Summary: This study demonstrates a hybrid composite catalyst consisting of CoSx nanoparticles, nitrogen-doped carbon nanotubes, and nickel, which shows enhanced electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction. The optimized hybrid catalyst exhibits excellent performance in an alkaline zinc-air battery, suggesting potential applications in sustainable energy conversion devices.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Highly efficient construction of hollow Co-Nx nanocube cage dispersion implanted with porous carbonized nanofibers for Li-O2 batteries

Lichong Peng et al.

Summary: A scalable strategy for embedding ZIF-derived hollow Co-N-x nanocube cage dispersion implanted with porous carbonized nanofibers was proposed, resulting in significantly improved charge/discharge polarization and long-term cyclability in Li-O-2 batteries. This work may contribute to the development of highly efficient dual-function oxygen electrocatalysts.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Article Electrochemistry

Bimetallic ZIF-derived cobalt nanoparticles anchored on N- and S-codoped porous carbon nanofibers as cathode catalyst for Li-O2 batteries

Shiquan Guo et al.

Summary: In this study, a novel metal-organic frameworks catalyst was successfully synthesized and showed improved performance in lithium-oxygen batteries. This is attributed to its porous morphology and doping effect, which enhances mass transport, increases exposed active sites, and accelerates reaction progress.

ELECTROCHIMICA ACTA (2022)

Article Chemistry, Applied

Improved Adsorption Capacity and Photoactivity of ZnO-ZIF-8 Nanocomposites

D. Tuncel et al.

Summary: The ZnO-ZIF-8 300 degrees C nanocomposite exhibits enhanced adsorption ability and photocatalytic activity due to its mesoporous structure inherited from ZIF-8, making it a potential photocatalyst for environmental applications. Additionally, the stability of ZnO-ZIF-8 300 degrees C under different relative humidity conditions suggests its promise for practical use.

CATALYSIS TODAY (2021)

Article Chemistry, Physical

Modulation of Single Atomic Co and Fe Sites on Hollow Carbon Nanospheres as Oxygen Electrodes for Rechargeable Zn-Air Batteries

Vishal Jose et al.

Summary: This study presents a facile method for preparing bimetallic Fe and Co sites entrapped in nitrogen-doped hollow carbon nanospheres (Fe,Co-SA/CS), demonstrating promising activity for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).

SMALL METHODS (2021)

Article Chemistry, Multidisciplinary

Dynamically Unveiling Metal-Nitrogen Coordination during Thermal Activation to Design High-Efficient Atomically Dispersed CoN4 Active Sites

Yanghua He et al.

Summary: The structural evolution of CoN4 sites during thermal activation was studied using a ZIF-8-derived carbon host. It was found that the critical transition occurs at 700 degrees C with optimal conversion at 900 degrees C, resulting in the highest intrinsic activity and four-electron selectivity for the ORR.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Atomic-Level Modulation of Electronic Density at Cobalt Single-Atom Sites Derived from Metal-Organic Frameworks: Enhanced Oxygen Reduction Performance

Yuanjun Chen et al.

Summary: This study demonstrates the correlation between atomic configuration induced electronic density of single-atom Co active sites and oxygen reduction reaction (ORR) performance. The designed and synthesized Co-1-N3PS/HC catalyst shows outstanding ORR activity in alkaline and acidic media, surpassing Pt/C and most non-precious ORR electrocatalysts. Insights from this work promote rational design of efficient catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Atomically-dispersed Fe-Nx and C-S-C ordered mesoporous carbons as efficient catalysts for the oxygen reduction reaction in a microbial fuel cell

Wuli Han et al.

Summary: An efficient Fe/S-N/C catalyst with abundant ordered mesoporous structure and atomic dispersion of active Fe-N-x and C-S-C species was synthesized. The catalyst demonstrated superior ORR activity and could provide a high open circuit potential and maximum power density in MFC devices, outperforming commercial Pt/C catalysts. This study provides a new strategy for designing effective, low-cost ORR catalysts for MFC devices.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Chemistry, Physical

Tuning the dual-active sites of ZIF-67 derived porous nanomaterials for boosting oxygen catalysis and rechargeable Zn-air batteries

Zeyi Zhang et al.

Summary: The rational control of the active site in metal-organic frameworks (MOFs) derived nanomaterials is essential for building efficient bifunctional oxygen reduction/evolution reaction (ORR/OER) catalysts. By designing a Co3O4-Co heterostructure embedded in Co, N co-doped carbon polyhedra derived from ZIF-67 and cobalt nanocrystals, a dual-active site is realized, leading to excellent electrocatalytic activity. The theory calculation results suggest that charge redistribution of Co in the Co-N-x site is attributed to the optimized rate-determining step of desorption of intermediates in ORR and OER.

NANO RESEARCH (2021)

Article Chemistry, Physical

In situ confinement pyrolysis of ZIF-67 nanocrystals on hollow carbon spheres towards efficient electrocatalysts for oxygen reduction

Lin Zhong et al.

Summary: An in situ confinement pyrolysis protocol was reported to transform ZIF-67 nanocrystals on hollow carbon spheres to cobalt and nitrogen-enriched carbon shell, resulting in the formation of hierarchical HCS@Co/NC. The catalyst exhibited excellent oxygen reduction reaction performance due to its structure and composition advantages, outperforming the commercial Pt/C benchmark.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Article Chemistry, Applied

Solid phase microwave-assisted fabrication of Fe-doped ZIF-8 for single-atom Fe-N-C electrocatalysts on oxygen reduction

Xinlong Xu et al.

Summary: A rapid and solvent-free method was developed to produce Fe-doped ZIF-8, leading to Fe-N-C catalysts with exceptional ORR performance and brilliant methanol tolerance. The assembled direct methanol fuel cells (DMFCs) showed a peak power density of 61 mW cm(-2) and extraordinary stability, indicating the promising application perspective of this strategy.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Physical

Bi-functional electrocatalysis through synergetic coupling strategy of atomically dispersed Fe and Co active sites anchored on 3D nitrogen-doped carbon sheets for Zn-air battery

Yan Luo et al.

Summary: Modified zeolitic imidazolate frameworks were used to prepare atomically dispersed Fe and Co doped 3D nitrogen-doped carbon nanosheets, which showed excellent electrochemical performance in oxygen reduction reaction and oxygen evolution reaction. The synergistic effect between Fe and Co in the catalyst enhanced the ORR activity, leading to a high-performance Zn-air battery.

JOURNAL OF CATALYSIS (2021)

Article Chemistry, Physical

Tuning Charge Distribution of FeN4 via External N for Enhanced Oxygen Reduction Reaction

Yiyang Lin et al.

Summary: In this study, external N species, including pyrrolic-N and graphitic-N, were introduced near FeN4 to regulate its charge distribution and improve its ORR activity. Theoretical calculations and experimental results confirmed that the introduction of pyrrolic-N led to enhanced electron redistribution and local electrical field on the Fe site, resulting in positive charge accumulation and improved catalytic performance for ORR. This work provides guidance on enhancing the catalytic performances of single-atom catalysts by introducing charge-redistribution sites.

ACS CATALYSIS (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

A Dual-Functional Fibrous Skeleton Implanted with Single-Atomic Co-Nx Dispersions for Longevous Li-S Full Batteries

Ting Huang et al.

Summary: A dual-functional fibrous skeleton implanted with single-atom Co-N-x dispersion is designed to regulate both electrodes of lithium-sulfur batteries. By converting the fibrous carbon skeleton from lithiophobic to lithiophilic and optimizing the electrocatalytic activity of the Co-N-x species, the integrated batteries demonstrate improved performance in terms of dendritic formation and electrochemical conversion kinetics of sulfur.

ACS NANO (2021)

Article Chemistry, Multidisciplinary

Understanding the Synergistic Effects of Cobalt Single Atoms and Small Nanoparticles: Enhancing Oxygen Reduction Reaction Catalytic Activity and Stability for Zinc-Air Batteries

Zhe Wang et al.

Summary: A highly efficient and durable oxygen reduction reaction (ORR) catalyst consisting of atomically dispersed Co single atoms and small Co nanoparticles co-anchored on nitrogen-doped porous carbon nanocage was reported. The catalyst exhibited outstanding ORR activity and remarkable stability in alkaline media, outperforming Pt/C catalyst. Practical zinc-air battery assembled with this catalyst showed high power density, specific capacity, and cycling stability.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Epitaxially Grown Heterostructured SrMn3O6-x-SrMnO3 with High-Valence Mn3+/4+ for Improved Oxygen Reduction Catalysis

Cheng Chen et al.

Summary: The study developed a SrMn3O6-x-SrMnO3 (SMOx-SMO) heterostructure catalyst through epitaxial growth, showing excellent electrocatalyst performance for the oxygen reduction reaction (ORR). The formation of high-valence Mn3+/4+ promoted a positive shift in the d-band center, optimizing the catalytic activity at the heterojunction surface. Applied as an air-electrode catalyst in a rechargeable zinc-air battery, SMOx-SMO demonstrated high output voltage and power density, with cycling stability superior to Pt/C-IrO2 air-electrode catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Conferring supramolecular guanosine gel nanofiber with ZIF-67 for high-performance oxygen reduction catalysis in rechargeable zinc-air batteries

Chaonan Gu et al.

Summary: Nanostructured gels have been developed as a unique material platform for energy-related applications, focusing on polymer gels. A coordination-driven hierarchical assembly strategy was used to explore robust supramolecular gel (SMG) materials as metal-organic framework (MOF) supports, resulting in the development of high efficiency oxygen reduction reaction electrocatalysts for rechargeable Zn-air batteries. This work provides a new material platform for designing functional multicomponent composites in the future.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Review Chemistry, Inorganic & Nuclear

Non-precious metal electrocatalysts design for oxygen reduction reaction in polymer electrolyte membrane fuel cells: Recent advances, challenges and future perspectives

Maryam Kiani et al.

Summary: The development of non-precious nanomaterial-based electrocatalysts for polymer electrolyte membrane fuel cells is crucial for enhancing oxygen reduction reaction efficiency, stability, and cost-effectiveness. The use of fuel cells is favored due to their higher efficiency, cleanliness, and cost-effective power supply. Addressing the challenges in improving non-precious metal catalysts is essential for the future advancement of renewable energy technologies.

COORDINATION CHEMISTRY REVIEWS (2021)

Article Chemistry, Multidisciplinary

Simultaneously Engineering the Coordination Environment and Pore Architecture of Metal-Organic Framework-Derived Single-Atomic Iron Catalysts for Ultraefficient Oxygen Reduction

Feng Liu et al.

Summary: By synergizing single iron active centers with local S atoms in metal-organic frameworks, this study has significantly enhanced the oxygen reduction reaction performance, leading to improved catalytic activity and battery performance.
Review Chemistry, Physical

Atomic regulation of metal-organic framework derived carbon-based single-atom catalysts for the electrochemical CO2 reduction reaction

Danni Zhou et al.

Summary: Metal-organic framework (MOF) derived single-atom catalysts exhibit high electrocatalytic performance in carbon dioxide reduction reactions, with the reaction pathway of CO2RR being precisely regulated by modulating elements and atomic structures. Main fabrication strategies and further regulations of the coordination environment of central atoms are systematically discussed in this review, providing new insights for future research on single-atom catalysts and CO2RR.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Article Chemistry, Physical

Atomically Dispersed Co-Pyridinic N-C for Superior Oxygen Reduction Reaction

Yuan Ha et al.

ADVANCED ENERGY MATERIALS (2020)

Review Chemistry, Multidisciplinary

Recent Progress in Graphene-Based Noble-Metal Nanocomposites for Electrocatalytic Applications

Jiawei Liu et al.

ADVANCED MATERIALS (2019)

Review Chemistry, Multidisciplinary

Carbon-Based Metal-Free ORR Electrocatalysts for Fuel Cells: Past, Present, and Future

Lijun Yang et al.

ADVANCED MATERIALS (2019)

Article Chemistry, Multidisciplinary

Single-Atom Fe-Nx-C as an Efficient Electrocatalyst for Zinc-Air Batteries

Junxing Han et al.

ADVANCED FUNCTIONAL MATERIALS (2019)

Article Chemistry, Multidisciplinary

From 3D ZIF Nanocrystals to Co-Nx/C Nanorod Array Electrocatalysts for ORR, OER, and Zn-Air Batteries

Ibrahim Saana Amiinu et al.

ADVANCED FUNCTIONAL MATERIALS (2018)

Article Materials Science, Multidisciplinary

Effect of alkaline hydrolysis on cyclization reaction of PAN nanofibers

So Yeon Jin et al.

MATERIALS & DESIGN (2017)