A5091129156- Advancements in Battery Materials
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Graphene research and applications
- Semiconductor materials and devices
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Advanced Battery Technologies Research
- MXene and MAX Phase Materials
- Ionic liquids properties and applications
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Electrochemical sensors and biosensors
- Nanomaterials for catalytic reactions
- Advanced Thermoelectric Materials and Devices
- Gas Sensing Nanomaterials and Sensors
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Memory and Neural Computing
- Graphene and Nanomaterials Applications
- Diamond and Carbon-based Materials Research
Nanjing University of Information Science and Technology
2023-2025
University of Science and Technology Beijing
2017-2025
Materials Science & Engineering
2024
Nanjing University
2024
University of Information Science
2024
Beijing Advanced Sciences and Innovation Center
2023
Agency for Science, Technology and Research
2014-2019
Institute of Materials Research and Engineering
2014-2019
Western University
2009-2018
China Academy of Engineering Physics
2016
Nitrogen-doped graphene as a metal-free catalyst for oxygen reduction was synthesized by heat-treatment of using ammonia. It found that the optimum temperature 900 °C. The resulting had very high reaction (ORR) activity through four-electron transfer process in oxygen-saturated 0.1 M KOH. Most importantly, electrocatalytic and durability this material are comparable or better than commercial Pt/C (loading: 4.85 µgPt cm−2). XPS characterization these catalysts tested to identify active N species ORR.
Platinum-nanoparticle-based catalysts are widely used in many important chemical processes and automobile industries. Downsizing catalyst nanoparticles to single atoms is highly desirable maximize their use efficiency, however, very challenging. Here we report a practical synthesis for isolated Pt anchored graphene nanosheet using the atomic layer deposition (ALD) technique. ALD offers capability of precise control size span from atom, subnanometer cluster nanoparticle. The single-atom...
Ultrathin MoS2/N-graphene nanosheets with ≈4 nm thickness exhibit exceptional electrochemical performance. Extension of the defect sites and vacancies results in increase capacity during cycling. As a service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should addressed Please...
Abstract As one of the most promising negative electrode materials in lithium‐ion batteries (LIBs), SnO 2 experiences intense investigation due to its high specific capacity and energy density, relative conventional graphite anodes. In this study, for first time, atomic layer deposition (ALD) is used deposit , containing both amorphous crystalline phases, onto graphene nanosheets (GNS) as anodes LIBs. The resultant ‐graphene nanocomposites exhibit a sandwich structure, and, when cycled...
A new "star" catalyst: Carbon-supported multiarmed starlike Pt nanowires (see SEM picture) are highly active and stable electrocatalysts for proton-exchange membrane fuel cells. This novel nanostructure shows much improved activity durability over the current commercial Pt/C catalyst made of nanoparticles. Detailed facts importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They available submitted by authors....
Lithium ‐ air batteries have become a focus of research on future battery technologies. Technical issues associated with lithium‐air batteries, however, are rather complex. Apart from the sluggish oxygen reaction kinetics which demand efficient reduction (ORR) and evolution (OER) catalysts, also inherited nature an open system use reactive metal lithium as anode. Lithium‐air exchange directly ambient air, face more challenges due to additional oxidative agents moisture, carbon dioxide, etc....
Sandwiched structures consisting of carbon coated SnO2 nanorod grafted on graphene have been synthesized based a seed assisted hydrothermal growth to form supported nanorods, followed by nanocarbon coating. As potential anode for high power and energy applications, the hierarchical nanostructures exhibit greatly enhanced synergic effect with an extremely lithium storage capability up 1419 mA h g−1 benefiting from advanced structural features.
Graphene nanosheets (GNSs) were synthesized and used as cathode active materials in a nonaqueous lithium-oxygen battery. The GNSs electrode delivered an extremely high discharge capacity comparison to carbon powders, which is attributed its unique morphology structure.
A facile method is developed for the fabrication of Co<sub>3</sub>O<sub>4</sub> nanoparticles decorated carbon nanofibers, which enable significant improvement rechargeable Zn-air batteries with respect to rate capability, cycling stability and energy density.
This review describes recent advances in two-dimensional MoS<sub>2</sub> nanosheets and their composite materials for understanding high-electrocatalytic performance HER ORR.
This review article summarizes the recent progress of atomic layer deposition (ALD) in energy technologies including rechargeable secondary batteries, fuel cells, photovoltaics, and optoelectronics.
Sulphur-doped graphene was successfully fabricated and its influence on the discharge product formation in lithium–oxygen batteries demonstrated. The growth distribution of products were studied a mechanism proposed. This will have significant implication for cathode catalysts rechargeable battery performance.
A porous composite of LiFePO4/nitrogen-doped carbon nanotubes (N-CNTs) with hierarchical structure was prepared by a sol–gel method without templates or surfactants. Highly conductive and uniformly dispersed N-CNTs incorporated into three dimensional interlaced LiFePO4 can facilitate the electronic lithium ion diffusion rate. The LiFePO4/N-CNTs composites deliver reversible discharge capacity 138 mA h g−1 at current density 17 while LiFePO4/CNTs only 113 g−1, demonstrating modified act as...
A one-step microwave-assisted hydrothermal method (MAHM) has been developed to synthesize SnO2/graphene composites. It is shown that fine SnO2 nanoparticles with an average size of 3.5 nm can be homogeneously deposited on graphene nanosheets (GNSs) using this technique. The electronic structure as revealed from X-ray absorption near edge (XANES) shows the are abundant in surface defects oxygen vacancies, which facilitate immobilization onto GNSs by interaction. Carbon K XANES provide direct...
A comprehensive review on the active sites of doped graphene and mechanism their oxygen reduction reaction (ORR) with a summary feasible approaches for further improvement ORR activities.