Outputs (26)

Singlet oxygen is not the main source of electrolyte degradation in lithium–oxygen batteries (2024)
Journal Article
Zor, C., Jones, K. D., Rees, G. J., Yang, S., Pateman, A., Gao, X., Johnson, L. R., & Bruce, P. G. (2024). Singlet oxygen is not the main source of electrolyte degradation in lithium–oxygen batteries. Energy and Environmental Science, 17(19), 7355-7361. https://doi.org/10.1039/d4ee02176b

The lithium–air (oxygen) battery could offer significant improvements in gravimetric energy density compared to lithium-ion technology. A major barrier to realising this goal is the oxidative degradation of the electrolyte solution and the carbon at... Read More about Singlet oxygen is not the main source of electrolyte degradation in lithium–oxygen batteries.

A High Capacity Gas Diffusion Electrode for Li–O2 Batteries (2024)
Journal Article
Jenkins, M., Dewar, D., Lagnoni, M., Yang, S., Rees, G. J., Bertei, A., Johnson, L. R., Gao, X., & Bruce, P. G. (2024). A High Capacity Gas Diffusion Electrode for Li–O2 Batteries. Advanced Materials, 36(41), Article 2405715. https://doi.org/10.1002/adma.202405715

The very high theoretical specific energy of the lithium–air (Li–O2) battery (3500 Wh kg−1) compared with other batteries makes it potentially attractive, especially for the electrification of flight. While progress has been made in realizing the Li–... Read More about A High Capacity Gas Diffusion Electrode for Li–O2 Batteries.

Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte (2024)
Journal Article
Dimogiannis, K., Sankowski, A., Holc, C., Parmenter, C. D., Newton, G. N., Walsh, D. A., O'Shea, J., Khlobystov, A. N., & Johnson, L. R. (2024). Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte. Energy Storage Materials, 67, Article 103280. https://doi.org/10.1016/j.ensm.2024.103280

The volumetric energy density of magnesium exceeds that of lithium, making magnesium batteries particularly promising for next-generation energy storage. However, electrochemical cycling of magnesium electrodes in common battery electrolytes is coulo... Read More about Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte.

Understanding the limits of Li-NMC811 half-cells (2023)
Journal Article
McNulty, R. C., Hampson, E., Cutler, L. N., Grey, C. P., Dose, W. M., & Johnson, L. R. (2023). Understanding the limits of Li-NMC811 half-cells. Journal of Materials Chemistry A, 11(34), 18302-18312. https://doi.org/10.1039/d3ta00912b

As we push the boundaries of state-of-the-art lithium-ion intercalation materials, such as nickel-rich chemistries, the ability to isolate and understand specific degradation and performance limitations is becoming increasingly important. Half-cells,... Read More about Understanding the limits of Li-NMC811 half-cells.

A lithium-air battery and gas handling system demonstrator (2023)
Journal Article
Jordan, J. W., Vailaya, G., Holc, C., Jenkins, M., McNulty, R. C., Puscalau, C., Tokay, B., Laybourn, A., Gao, X., Walsh, D. A., Newton, G. N., Bruce, P. G., & Johnson, L. R. (2024). A lithium-air battery and gas handling system demonstrator. Faraday Discussions, 248, 381-391. https://doi.org/10.1039/d3fd00137g

The lithium-air (Li-air) battery offers one of the highest practical specific energy densities of any battery system at >400 W h kgsystem−1. The practical cell is expected to operate in air, which is flowed into the positive porous electrode where it... Read More about A lithium-air battery and gas handling system demonstrator.

Why charging Li–air batteries with current low-voltage mediators is slow and singlet oxygen does not explain degradation (2023)
Journal Article
Ahn, S., Zor, C., Yang, S., Lagnoni, M., Dewar, D., Nimmo, T., Chau, C., Jenkins, M., Kibler, A. J., Pateman, A., Rees, G. J., Gao, X., Adamson, P., Grobert, N., Bertei, A., Johnson, L. R., & Bruce, P. G. (2023). Why charging Li–air batteries with current low-voltage mediators is slow and singlet oxygen does not explain degradation. Nature Chemistry, 15(7), 1022–1029. https://doi.org/10.1038/s41557-023-01203-3

Although Li–air rechargeable batteries offer higher energy densities than lithium-ion batteries, the insulating Li2O2 formed during discharge hinders rapid, efficient re-charging. Redox mediators are used to facilitate Li2O2 oxidation; however, fast... Read More about Why charging Li–air batteries with current low-voltage mediators is slow and singlet oxygen does not explain degradation.

Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery (2023)
Journal Article
McNulty, R. C., Jones, K. D., Holc, C., Jordan, J. W., Bruce, P. G., Walsh, D. A., Newton, G. N., Lam, H. W., & Johnson, L. R. (2023). Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery. Advanced Energy Materials, 13(3), Article 2300579. https://doi.org/10.1002/aenm.202300579

Understanding and eliminating degradation of the electrolyte solution is arguably the major challenge in the development of high energy density lithium–air batteries. The use of acetonitrile provides cycle stability comparable to current state-of-the... Read More about Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery.

Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes (2023)
Journal Article
Jordan, J. W., Mortiboy, B., Khlobystov, A. N., Johnson, L. R., Newton, G. N., & Walsh, D. A. (2023). Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes. Journal of the American Chemical Society, 145(16), 9052–9058. https://doi.org/10.1021/jacs.3c00554

Understanding ion transport in solid materials is crucial in the design of electrochemical devices. Of particular interest in recent years is the study of ion transport across 2-dimensional, atomically thin crystals. In this contribution, we describe... Read More about Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes.

Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries (2023)
Journal Article
McNulty, R. C., Penston, K., Amin, S. S., Stal, S., Lee, J. Y., Samperi, M., Pérez-García, L., Cameron, J. M., Johnson, L. R., Amabilino, D. B., & Newton, G. N. (2023). Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries. Angewandte Chemie International Edition, 62(12), Article e202216066. https://doi.org/10.1002/anie.202216066

The mixing of [V10O28]6− decavanadate anions with a dicationic gemini surfactant (gem) leads to the spontaneous self-assembly of surfactant-templated nanostructured arrays of decavanadate clusters. Calcination of the material under air yields highly... Read More about Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries.

Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response (2022)
Journal Article
Wadge, M. D., Bird, M. A., Sankowski, A., Constantin, H., Fay, M. W., Cooper, T. P., O'Shea, J. N., Khlobystov, A. N., Walsh, D. A., Johnson, L. R., Felfel, R. M., Ahmed, I., & Grant, D. M. (2023). Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response. Advanced Materials Interfaces, 10(5), Article 2201523. https://doi.org/10.1002/admi.202201523

This study describes the chemical conversion and heat treatment of Ti6Al4V microspheres (Ti6_MS), and the resulting effects on their electrocatalytic properties. The wet-chemical conversion (5.0m NaOH, 60°C, 24h; Sample label: Ti6_TC) converts the to... Read More about Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response.