A5085720759- 2D Materials and Applications
- Advancements in Battery Materials
- MXene and MAX Phase Materials
- Advanced Battery Materials and Technologies
- Advanced Photocatalysis Techniques
- Topological Materials and Phenomena
- Supercapacitor Materials and Fabrication
- Graphene research and applications
- Metalloenzymes and iron-sulfur proteins
- X-ray Diffraction in Crystallography
- Advanced Thermoelectric Materials and Devices
- Electrocatalysts for Energy Conversion
- Molecular Junctions and Nanostructures
- Advanced battery technologies research
- Perovskite Materials and Applications
University College London
2022-2025
University of Oxford
2017
Science Oxford
2017
Numerous layered materials are being recognized as promising candidates for high-performance alkali-ion battery anodes, but black phosphorus (BP) has received particular attention. This is due to its high specific capacity, a mixed storage mechanism (intercalation-alloying), and fast transport within layers. Unfortunately, BP based batteries also commonly associated with serious irreversible losses poor cycling stability. known be linked alloying, there little experimental evidence of the...
Abstract Nanoribbons, nanometre-wide strips of a two-dimensional material, are unique system in condensed matter. They combine the exotic electronic structures low-dimensional materials with an enhanced number exposed edges, where phenomena including ultralong spin coherence times 1,2 , quantum confinement 3 and topologically protected states 4,5 can emerge. An exciting prospect for this material concept is potential both tunable semiconducting structure magnetism along nanoribbon edge, key...
We describe an approach to generating and verifying well-defined redox states in metalloprotein single crystals by combining electrochemical control with synchrotron infrared microspectroscopic imaging. For NiFe hydrogenase 1 from Escherichia coli we demonstrate fully reversible uniform reduction the oxidised inactive reduced state, temporally resolve steps during this reduction.
Quasi-1D nanoribbons provide a unique route to diversifying the properties of their parent 2D nanomaterial, introducing lateral quantum confinement and an abundance edge sites. Here, new family nanomaterials is opened with creation arsenic–phosphorus alloy (AsPNRs). By ionically etching layered crystal black using lithium electride followed by dissolution in amidic solvents, solutions AsPNRs are formed. The ribbons typically few-layered, several micrometers long widths tens nanometers...
Black phosphorene quantum dots (BPQDs) are most commonly derived from high-cost black phosphorus, while previous syntheses the low-cost red phosphorus (P
Abstract The relative vast abundance and more equitable global distribution of terrestrial sodium makes sodium-ion batteries (NIBs) potentially cheaper sustainable alternatives to commercial lithium-ion (LIBs). However, the practical capacities cycle lives NIBs at present do not match those LIBs have therefore hindered their progress commercialisation. drawback NIB technology stems largely from electrode materials associated Na + ion storage mechanisms. Increased understanding...
Despite their higher capacity compared to common intercalation- and conversion-type anodes, black phosphorus (BP) based anodes suffer from significant fading attributed the large volume expansion (∼300%) during lithiation. Downsizing BP into nanosheets has been proposed mitigate this issue, various methods, particularly mechanical mixing with graphitic materials (BP-C), have explored enhance electrochemical performance. However, understanding of BP-C hybridization is hindered by lack studies...
Phosphorene nanoribbons (PNRs) can be synthesised in intrinsically scalable methods from intercalation of black phosphorus (BP), however, the mechanism ribbonisation remains unclear. Herein, to investigate point at which form, we decouple two key synthesis steps: first, formation BP compound, and second, dissolution into a polar aprotic solvent. We find that both lithium intercalant negative charge on host framework effectively removed by addition phenyl cyanide return whether fracturing...
Electrochemical energy storage devices, such as batteries and supercapacitors, allow us to store electrical chemical energy. They are a vital component of the UK’s plans achieve net-zero carbon emissions by 2050. 1 Nanomaterials offer properties short ion diffusion distances, high percolation form conductive networks, structural frameworks that can withstand mechanical stresses from successive volume expansion-contraction cycles on insertion-deinsertion guest ions. Thanks these properties,...
Nanoribbons - nanometer wide strips of a two-dimensional material are unique system in condensed matter physics. They combine the exotic electronic structures low-dimensional materials with an enhanced number exposed edges, where phenomena including ultralong spin coherence times, quantum confinement and topologically protected states can emerge. An exciting prospect for this new concept is potential both tunable semiconducting structure magnetism along nanoribbon edge. This combination...