ORCID Profile
0000-0002-1256-4984
Current Organisation
Institute for Frontier Materials, Deakin University
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Publisher: IWA Publishing
Date: 1997
Publisher: Wiley
Date: 25-09-2019
Publisher: American Chemical Society (ACS)
Date: 09-12-2019
DOI: 10.1021/JACS.9B10685
Abstract: Nanocomposites consisting of a polymer matrix and metallic nanoparticles can merge the functional, structural, and mechanical properties of the two components and are useful for applications that range from catalysis to soft electronics. Gaining spatial control over the nanoparticle incorporation is useful, for ex le to confine catalytic sites or create electrically conducting pathways. Here, we show that this is possible by the controlled disassembly of a metallosupramolecular polymer containing zerovalent platinum complexes to form nanoparticles
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00708D
Abstract: The combination of block copolymer self-assembly and polymer phase separation with sol–gel chemistry enables the optimisation of Li 4 Ti 5 O 12 (LTO) microspheres with size-tuneable carbon-coated mesopores, resulting in excellent electrochemical performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA00380A
Abstract: The composite solid polymer electrolyte (SPE), a soft copolymer reinforced with cellulose nanofibers, provides both high ionic conductivity and stiffness to suppress dendrite growth, thereby enabling high-energy-density lithium metal batteries.
Publisher: Cambridge University Press (CUP)
Date: 25-08-2021
DOI: 10.33774/CHEMRXIV-2021-TMG9M
Abstract: Composite solid electrolytes including inorganic nanoparticles or nanofibers which improve the performance of polymer electrolytes due to their superior mechanical, ionic conductivity or lithium transference number are actively being searched for applications in lithium metal batteries. However, inorganic nanoparticles present limitations such as its tedious surface functionalization and agglomeration issues and poor homogeneity at high concentrations in polymer matrices. In this work, we report on polymer nanoparticles with lithium sulfonamide surface functionality (LiPNP) for application as electrolytes in lithium metal battery. The particles are prepared by semibatch emulsion polymerization, an easily up–scalable technique. LiPNPs are used to prepare two different families of particle reinforced solid electrolytes. When mixed with polyethylene oxide and lithium bis(trifluoromethane)sulfonimide (LiTFSI/PEO), the particles provoke a significant stiffening effect (E´ 106 Pa vs. 105 Pa at 80 ºC) while retaining high ionic conductivity (σ = 6.6 × 10–4 S cm–1). Preliminary testing in LiFePO4 full cells, showed promising performance of the PEO nanocomposite electrolytes. By mixing the particles with propylene carbonate without any additional salt, we obtain true single ion conducting gel electrolytes as the lithium sulfonamide surface functionalities are the only sources of lithium ions in the system. The gel electrolytes are mechanically robust (up to G´ =106 Pa) and show ionic conductivity up to 10–4 S cm–1. Finally, the PC nanocomposite electrolytes were tested in symmetrical lithium cells. Our findings suggest that all–polymer nanoparticles could represent a new building block material for solid–state lithium metal battery applications.
Publisher: MDPI AG
Date: 05-03-2020
Abstract: Lithium metal anodes have been pursued for decades as a way to significantly increase the energy density of lithium-ion batteries. However, safety risks caused by flammable liquid electrolytes and short circuits due to lithium dendrite formation during cell cycling have so far prevented the use of lithium metal in commercial batteries. Solid polymer electrolytes (SPEs) offer a potential solution if their mechanical properties and ionic conductivity can be simultaneously engineered. Here, we introduce a family of SPEs that are scalable and easy to prepare with a photopolymerization process, synthesized from hiphilic acrylic polymer conetworks based on poly(ethylene glycol), 2-hydroxy-ethylacrylate, norbornyl acrylate, and either lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) or a single-ion polymethacrylate as lithium-ion source. Several conetworks were synthesized and cycled, and their ionic conductivity, mechanical properties, and lithium transference number were characterized. A single-ion-conducting polymer electrolyte shows the best compromise between the different properties and extends the calendar life of the cell.
Location: No location found
Location: Australia
Start Date: 2020
End Date: 2021
Funder: Swiss National Science Foundation
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