A5021208480- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Chemical Synthesis and Characterization
- Crystallization and Solubility Studies
- Advanced battery technologies research
- X-ray Diffraction in Crystallography
- Semiconductor materials and interfaces
- Polyoxometalates: Synthesis and Applications
- Extraction and Separation Processes
- Inorganic Fluorides and Related Compounds
- Graphene research and applications
- Conducting polymers and applications
- Inorganic Chemistry and Materials
- Electron and X-Ray Spectroscopy Techniques
- Metal-Organic Frameworks: Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Electrochemical sensors and biosensors
- Fuel Cells and Related Materials
- Green IT and Sustainability
University of Oxford
2018-2023
The Faraday Institution
2021
Oxfam
2020
Potassium-ion batteries (KIB) are a promising complementary technology to lithium-ion because of the comparative abundance and affordability potassium. Currently, most KIB chemistry consists potassium manganese hexacyanoferrate (KMF) cathode, Prussian blue analog, graphite anode (723 W h l–1 359 kg–1 at 3.6 V). No electrolyte has yet been formulated that is concurrently stable high operating potential KMF (4.02 V vs K+/K) compatible with K+ intercalation into graphite, currently critical...
To match the high capacity of metallic anodes, all-solid-state batteries require energy density, long-lasting composite cathodes such as Ni–Mn–Co (NMC)-based lithium oxides mixed with a solid-state electrolyte (SSE). However in practice, cathode typically fades due to NMC cracking and increasing NMC/SSE interface debonding because pulverization, which is only partially mitigated by application cell pressure during cycling. Using smart processing protocols, we report single-crystal...
Abstract The solid electrolyte interphase (SEI), a complex layer that forms over the surface of electrodes exposed to battery electrolyte, has central influence on structural evolution electrode during operation. For lithium metallic anodes, tailoring this SEI is regarded as one most effective avenues for ensuring consistent cycling behavior, and thus practical efficiencies. While fluoride‐rich interphases in particular seem beneficial, how they alter dynamics plating stripping promote...
The role of ether electrolyte solvent in facilitating efficient Na metal anode cycling performance is identified to be preventing adverse gas formation and favouring a flexible conformal SEI.
Prussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation framework itself. Many hexacyanoferrate materials excellent and are some most promising sodium- potassium-ion cathode in both aqueous organic electrolytes. However, there is a distinct lack candidate PBA operate at low potentials, as characteristic crystalline...
Red phosphorus (RP) is a promising candidate as an anode for sodium-ion batteries because of its low potential and high specific capacity. It has two main disadvantages. First, it experiences 490% volumetric expansion during sodiation, which leads to particle pulverization substantial reduction the cycle life. Second, extremely electronic conductivity 10–14 S cm–1. Both issues can be addressed by ball milling RP with carbon matrix form composite electronically conductive small particles,...
In this study we address the Li-ion de-insertion/insertion mechanisms from/into lattice of mixed olivine LiCo<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>PO<sub>4</sub> (LCFMP).
To match the high capacity of metallic anodes, all-solid-state batteries (ASSBs) re- quire energy density, long-lasting composite cathodes such as Ni-Mn-Co (NMC)- based lithium oxides mixed with a solid-state electrolyte (SSE). However in practice, cathode typically fades due to NMC cracking and increasing NMC/SSE in- terface debonding because pulverization, which is only partially mitigated by application cell pressure during cycling. Using smart processing proto- cols we report single...
Potassium-ion batteries (KIB) are a promising complementary technology to lithium-ion because of the comparative abundance and affordability potassium. Currently, most KIB chemistry consists potassium manganese hexacyanoferrate (KMF) cathode, Prussian blue analog, graphite anode (723Whl−1 359Whkg−1 at 3.6V). No electrolyte has yet been formulated that is concurrently stable high operating potential KMF (4.02V vs K+/K) compatible with K+ intercalation into graphite, currently critical hurdle...
<div><div><div><p>Potassium-ion batteries (KIB) are a promising complementary technology to lithium-ion because of the comparative abundance and affordability potassium. Currently, most KIB chemistry consists potassium manganese hexacyanoferrate (KMF) cathode, Prussian blue analog, graphite anode (723Whl−1 359Whkg−1 at 3.6V). No electrolyte has yet been formulated that is concurrently stable high operating potential KMF (4.02V vs K+/K) compatible with K+ intercalation...
Prussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation framework itself. Many hexacyanoferrate materials excellent and are some most promising sodium- potassium-ion cathode in both aqueous organic electrolytes. However, there is a distinct lack candidate PBA operate at low potentials as characteristic crystalline shows...
Sodium-ion batteries will have an important role as a complement to lithium-ion in future where lithium or cobalt, two critical elements for batteries, become scarce prohibitively expensive. Red phosphorus (RP) is promising candidate anode sodium-ion because of its low potential and high specific capacity. Its main disadvantage 490% volumetric expansion during sodiation. This leads particle pulverization substantial reduction the cycle life. Furthermore, RP has extremely electronic...
<div><div><div><p>To match the high capacity of metallic anodes, all-solid-state batteries (ASSBs) re- quire energy density, long-lasting composite cathodes such as Ni-Mn-Co (NMC)- based lithium oxides mixed with a solid-state electrolyte (SSE). However in practice, cathode typically fades due to NMC cracking and increasing NMC/SSE in- terface debonding because pulverization, which is only partially mitigated by application cell pressure during cycling. Using smart...
Potassium-ion batteries (KIBs) are a promising complementary technology to lithium-ion that have the potential be more sustainable and lower in cost. In KIBs lithium is replaced with potassium, copper current collector aluminium, cathodes can cobalt nickel free. crucial advantage over sodium-ion potassium reversibly intercalate into graphite whilst sodium cannot. Graphite offers low operating voltage, high capacity, good rate performance as potassium-ion anode material. There remain...
<div><div><div><p>Red phosphorus (RP) is a promising anode material for potassium-ion batteries because of its theoretical capacity 865mAhg–1 delivered at an average potential 0.5V vs K+/K. However, alloy reaction</p><p>to form KP entails volume expansion 162% resulting in severe stresses that lead to SEI and electrode fracture, loss electric contact, ultimately reduced cycle life. Moreover, low electronic conductivity (10<sup>-14 </sup>Scm–1)...
Correction for ‘The role of an elastic interphase in suppressing gas evolution and promoting uniform electroplating sodium metal anodes’ by Chen Gong et al. , Energy Environ. Sci. 2023, 16 535–545, https://doi.org/10.1039/D2EE02606F.
Sodium-ion batteries will have an important role as a complement to lithium-ion in future where lithium or cobalt, two critical elements for batteries, become scarce prohibitively expensive. Red phosphorus (RP) is promising candidate anode sodium-ion because of its low potential and high specific capacity. Its main disadvantage 490% volumetric expansion during sodiation. This leads particle pulverization substantial reduction the cycle life. Furthermore, RP has extremely electronic...
Prussian blue analogues (PBAs) have recently shown outstanding electrochemical properties ascribable to their unique open-framework crystal structure that allows the reversible insertion of alkali ions with negligible perturbation framework itself. Many hexacyanoferrate materials excellent and are some most promising sodium- potassium-ion cathode in both aqueous organic electrolytes. However, there is a distinct lack candidate PBA operate at low potentials as characteristic crystalline shows...
Sodium-ion batteries will have an important role as a complement to lithium-ion in future where lithium or cobalt, two critical elements for batteries, become scarce prohibitively expensive. Red phosphorus (RP) is promising candidate anode sodium-ion because of its low potential and high specific capacity. Its main disadvantage 490% volumetric expansion during sodiation. This leads particle pulverization substantial reduction the cycle life. Furthermore, RP has extremely electronic...