A5020977060- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced battery technologies research
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Advanced Battery Technologies Research
- Advanced biosensing and bioanalysis techniques
- Ammonia Synthesis and Nitrogen Reduction
- Thermal Expansion and Ionic Conductivity
- Electrocatalysts for Energy Conversion
- Conducting polymers and applications
- Supercapacitor Materials and Fabrication
- Chemical Synthesis and Characterization
- Hydrogen Storage and Materials
- Biosensors and Analytical Detection
- CO2 Reduction Techniques and Catalysts
- Mesoporous Materials and Catalysis
- DNA and Nucleic Acid Chemistry
- Graphene research and applications
- Advanced Photocatalysis Techniques
- Enzyme Catalysis and Immobilization
- Catalysis for Biomass Conversion
- Transition Metal Oxide Nanomaterials
- 2D Materials and Applications
- Membrane-based Ion Separation Techniques
Imperial College London
2019-2024
London Centre for Nanotechnology
2022-2023
Western University
2013-2021
University of Toronto
2021
Transnational Press London
2015-2018
University West
2016
Iran University of Medical Sciences
2014
K.N.Toosi University of Technology
2007-2013
Na-metal batteries are considered as the promising alternative candidate for Li-ion battery beneficial from wide availability and low cost of sodium, high theoretical specific capacity, energy density based on plating/stripping processes lowest electrochemical potential. For batteries, crucial problem metallic Na is one biggest challenges. Mossy or dendritic growth occurs in repetitive stripping/plating process with an unstable solid electrolyte interphase layer nonuniform ionic flux, which...
Abstract Electrochemical CO 2 reduction (CO R) is an attractive option for storing renewable electricity and the sustainable production of valuable chemicals fuels. In this roadmap, we review recent progress in fundamental understanding, catalyst development, engineering scale-up. We discuss outstanding challenges towards commercialization electrochemical R technology: energy efficiencies, selectivities, low current densities, stability. highlight opportunities establishing rigorous...
Abstract Sodium‐ion batteries as a prospective alternative to lithium‐ion are facing the challenge of developing high‐performance, low‐cost and sustainable anode materials. Hard carbons appropriate store sodium ions, but major energy environmental concerns during their fabrication process (i.e., high‐temperature carbonization) have not been properly assessed. Furthermore, rational design high‐performing hard carbon anodes is usually limited by conventional direct carbonization organic...
The rational construction of efficient and low-cost electrocatalysts for the hydrogen evolution reaction (HER) is critical to seawater electrolysis. Herein, trimetallic heterostructured core-shell nanoboxes based on Prussian blue analogues (Ni-Co@Fe-Co PBA) were synthesized using an iterative coprecipitation strategy. same procedure was used preparation PBA core shell, with synthesis shell involving chemical etching during introduction ferrous ions. Due its unique structure composition,...
Abstract Here, a sol‐gel method is used to prepare Prussian blue analogue (NiFe‐PBA) precursor with 2D network, which further annealed an Fe 3 O 4 /NiC x composite (NiFe‐PBA‐gel‐cal), inheriting the ultrahigh specific surface area of parent structure. When as both anode and cathode catalyst for overall water splitting, it requires low voltages 1.57 1.66 V provide current density 100 mA cm −2 in alkaline freshwater simulated seawater, respectively, exhibiting no obvious attenuation over 50 h...
Chemical composition of the discharge products as well charging overpotential Na–air cell is correlated with kinetic parameters.
Nitrogen-doped graphene nanosheets (N-GNSs) displayed a discharge capacity two times greater than their pristine counterpart, as well superior electrocatalytic activity cathode material for sodium–air batteries. The enhanced performance of N-GNSs is attributed to the active sites introduced by nitrogen doping.
A binder-free three-dimensional (3D) nanostructured air electrode composed of vertically grown nitrogen doped carbon nanotubes on paper (NCNT-CP) is developed and applied to Na–O2 cells. The 3D architecture the results in increased discharge capacity by optimizing utilized area material. chemical electrochemical reaction mechanisms cell are also explored with use synchrotron-based X-ray absorption spectroscopy (XAS). Investigation product cells during charge cycles using near-edge structure...
23Na MAS NMR spectra of sodium–oxygen (Na–O2) cathodes reveals a combination degradation species: newly observed sodium fluoride (NaF) and the expected carbonate (Na2CO3), as well desired reaction product peroxide (Na2O2). The initial product, superoxide (NaO2), is not present in measurable quantity cycled electrodes. reactivity solid NaO2 probed further, NaF found to be formed through between electrochemically generated electrode binder, polyvinylidene (PVDF). instability cell components...
Electrochemical carbon dioxide reduction to multicarbon products provides the storage of renewable energy in form chemical bonds, as well a means displace fossil sources feedstocks. However, accompanying anodic oxygen evolution reaction (OER) reduces efficiency process without providing salable product. Replacing OER with alternative organic oxidation reactions (OORs) is an emerging strategy reduce full-cell potential and generate valuable on both sides cell. We pursue monoxide that avoids...
Since its verification in 2019, there have been numerous high-profile papers reporting improved efficiency of lithium-mediated electrochemical nitrogen reduction to make ammonia. However, the literature lacks any coherent investigation systematically linking bulk electrolyte properties performance and Solid Electrolyte Interphase (SEI) properties. In this study, we discover that salt concentration has a remarkable effect on stability: at concentrations 0.6 M LiClO
Two-dimensional (2D) MnO<sub>2</sub> ultrathin nanosheets have been assembled into three-dimensional (3D) aerogels, which can help prevent the restacking of 2D nanocrystals, and consequently lead to enhanced performances in Li–O<sub>2</sub> batteries.
Room temperature sodium–air batteries have a similar design and concept as lithium–air batteries. Using ambient air instead of pure oxygen source is challenging because the minor components in could lead to various side reactions influence electrochemical reaction route. Although water an innegligible component air, its impact on Li– Na–air often underestimated. In this study, behavior under different relative humidity (RH) has been systemically investigated by galvanic cycling cyclic...
Despite their ubiquitous usage and increasing societal dependence on Li-ion batteries, there remains a lack of detailed empirical evidence Li intercalation/deintercalation into graphite even though this process dictates the performance, longevity, safety system. Here, we report direct detection dissociation specific crystallographic phases in lithiated graphite, which form through stepwise staging process. Using operando measurements, LiC18, LiC12, LiC6 are observed via distinct...
Abstract Lattice‐strained Bi 2 S 3 with 3D hierarchical structures are prepared through a top‐down route by topotactic transformation. High‐resolution transmission electron microscopy and X‐ray diffraction (XRD) confirm the lattice spacing is expanded prolonged sulfuration. Performance studies demonstrate that largest expansion (Bi ‐9.7%, where 9.7% represents expansion) exhibits greater electrocatalytic hydrogen evolution reaction (HER) activity compared to ‐3.2%. Density functional theory...
Single-atom catalysts, in particular the Fe-N-C family of materials, have emerged as a promising alternative to platinum group metals fuel cells catalysts for oxygen reduction reaction. Numerous theoretical studies suggested that dual atom can appreciably accelerate catalytic reactions; nevertheless, synthesis these materials is highly challenging owing metal clustering and aggregation into nanoparticles during high temperature treatment. In this work, are prepared by controlled post...
ConspectusReleasing greenhouse gases into the atmosphere because of widespread use fossil fuels by humankind has resulted in raising earth's temperature during past few decades. Known as global warming, increasing may turn endanger civilization on earth starting a cycle environmental changes including climate change and sea level rise. Therefore, replacing with more sustainable energy resources been considered one main strategies to tackle warming crisis. In this regard, saving devices are...