ORCID Profile
0000-0003-4927-6254
Current Organisations
Deakin University
,
Monash University
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Publisher: Wiley
Date: 23-11-2023
Abstract: Rechargeable zinc batteries (RZBs) are of immense interest as low‐cost and sustainable energy storage devices. However, formation of Zn dendrites, Zn corrosion, and undesired side reactions in aqueous electrolytes as well as the use of costly fluorinated salts in organic electrolytes, have hindered the commercialization of RZBs. In this work, a cost‐efficient and environmentally friendly, non‐aqueous electrolyte comprised of zinc dicyanamide (Zn(dca) 2 ) in dimethyl sulfoxide (DMSO) is shown to support the electrochemical cycling of zinc. Fourier‐transform infrared (FT‐IR) spectroscopy complemented with theoretical studies suggest that the solvation of Zn 2+ is stabilized with both [dca] − anions and DMSO molecules at high concentrations (≥1.0 M) of the zinc salt content. Stable charge/discharge cycles in zinc symmetrical cells with low overpotentials (0.05 V) were especially observed for 1.0 M Zn(dca) 2 /DMSO over 90 cycles at 1.0 mA cm −2 with scanning electron microscopy (SEM) images confirming the formation of a dense and smooth zinc morphology on metal anode surface post‐cycling. X‐ray photoelectron spectroscopy (XPS) also shows that the presence of zinc nitride (Zn 3 N 2 ) helps form a stable SEI layer in the presence of 1.0 M and 2.5 M systems, making [dca]‐based electrolytes highly promising candidates in rechargeable zinc batteries.
Publisher: Wiley
Date: 28-01-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6GC90103D
Abstract: Editorial on monitoring the production of toxic, or environmentally problematic substances in real time and controlling their occurrence.
Publisher: Wiley
Date: 20-11-2019
Abstract: Thermal energy storage technology utilizing phase-change materials (PCMs) can be a promising solution for the intermittency of renewable energy sources. This work describes a novel family of PCMs based on the pyrazolium cation, that operate in the 100-200 °C temperature range, offering safe, inexpensive capacity and low supercooling. Thermal stability and extensive cycling tests of the most promising PCM candidate, pyrazolium mesylate (T
Publisher: American Chemical Society (ACS)
Date: 14-05-2020
Publisher: American Chemical Society (ACS)
Date: 23-11-2022
DOI: 10.1021/ACS.CHEMREV.2C00407
Abstract: Thermal energy storage technologies utilizing phase change materials (PCMs) that melt in the intermediate temperature range, between 100 and 220 °C, have the potential to mitigate the intermittency issues of wind and solar energy. This technology can take thermal or electrical energy from renewable sources and store it in the form of heat. This is of particular utility when the end use of the energy is also as heat. For this purpose, the material should have a phase change between 100 and 220 °C with a high latent heat of fusion. Although a range of PCMs are known for this temperature range, many of these materials are not practically viable for stability and safety reasons, a perspective not often clear in the primary literature. This review examines the recent development of thermal energy storage materials for application with renewables, the different material classes, their physicochemical properties, and the chemical structural origins of their advantageous thermal properties. Perspectives on further research directions needed to reach the goal of large scale, highly efficient, inexpensive, and reliable intermediate temperature thermal energy storage technologies are also presented.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2SU00111J
Abstract: This work demonstrates the feasibility of aliphatic dicarbamate PCMs as inexpensive, stable and sustainable materials for the storage of renewable energy in the “Thermal Battery”.
Publisher: American Chemical Society (ACS)
Date: 27-11-2019
DOI: 10.26434/CHEMRXIV.10325726.V1
Abstract: Phase change materials (PCMs) which melt in the temperature range of 100-230 °C, are a promising alternative for the storage of thermal energy. In this range, large amounts of energy available from solar-thermal, or other forms of renewable heat, can be stored and applied to domestic or industrial processes, or to an Organic Rankine Cycle (ORC) engine to generate electricity. The amount of energy absorbed is related to the latent heat of fusion (ΔH f ) and is often connected to the extent of hydrogen bonding in the PCM. Herein, we report fundamental studies, including crystal structure and Hirshfeld surface analysis, of a family of guanidinium organic salts that exhibit high values of ΔH f , demonstrating that the presence and strength of H-bonds between ions plays a key role in this property.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CC09324D
Abstract: Mg has great potential as the basis for a safe, low cost energy storage technology, however, cycling of magnesium is difficult to achieve in most electrolytes.
Publisher: Wiley
Date: 06-2021
Abstract: A dearth of inexpensive means of energy storage is constraining the expansion of intermittent renewable energy sources such as sun and wind. Thermal energy storage technology utilizing phase‐change materials (PCMs) is a promising solution, enabling storage of large quantities of thermal energy at a relatively low cost. Guanidinium mesylate, which melts at 208 °C with latent heat of fusion of Δ H f =190 J g −1 is a promising PCM candidate for these applications. [1] Here, studies on guanidinium organic salts were conducted, including heat capacity, thermal conductivity, advanced thermal stability, long‐term cycling, and economic analysis. The data place guanidinium mesylate among the best PCMs operating in the 100–220 °C temperature region in terms of thermal energy storage, with total volumetric energy storage measured as 622 MJ m −3 (173 kWh m −3 ). Additionally, it was shown to be stable during cycling, with over 400 cycles performed. Simple economic analysis indicated a cost of 6 USD per MJ of stored thermal energy. This study proves that guanidinium mesylate and potentially other similar salts can be feasible as PCMs for inexpensive energy storage for renewable energy storage applications.
Publisher: American Chemical Society (ACS)
Date: 10-09-2019
DOI: 10.26434/CHEMRXIV.9784595
Abstract: Renewable energy has the ultimate capacity to resolve the environmental and scarcity challenges of the world’s energy supplies. However, both the utility of these sources and the economics of their implementation are strongly limited by their intermittent nature inexpensive means of energy storage therefore needs to be part of the design. Distributed thermal energy storage is surprisingly underdeveloped in this context, in part due to the lack of advanced storage materials. Here, we describe a novel family of thermal energy storage materials based on pyrazolium cation, that operate in the 100-220°C temperature range, offering safe, inexpensive capacity, opening new pathways for high efficiency collection and storage of both solar-thermal energy, as well as excess wind power. We probe the molecular origins of the high thermal energy storage capacity of these ionic materials and demonstrate extended cycling that provides a basis for further scale up and development.
Publisher: Wiley
Date: 02-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1MA00603G
Abstract: We work towards a rational design process for organic salt phase change materials, using X-ray crystallography to probe the structure–property relationship between hydrogen bonding and the enthalpy of fusion in these materials.
Publisher: Springer Science and Business Media LLC
Date: 12-01-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC04937A
Abstract: Accelerated rate calorimetry has been employed to study the exothermic and thermal runaway behaviour of some aprotic and protic ionic liquids. The aprotic [FSI] − salts are found to be more vulnerable to exothermic decomposition.
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 04-2016
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/CH18541
Abstract: Ionic liquids continue to challenge conventional descriptions of liquids and their behaviour. Indeed, the ever-increasing variety of ionic liquid compounds has generated a need for multiple descriptions of the different molecular families, including protic, aprotic, solvate, and metal coordination complex families of ionic liquids, that exhibit very different behaviours. Within families, the balance of long-range electrostatic and short-range dispersion forces plays out in nanoscale heterogeneity that also impacts markedly on properties. In this perspective, we highlight some of the issues in the field that continue to deserve further investigation and development at both the experimental and fundamental levels. We also propose a set of nomenclature abbreviations in an attempt to systematise the plethora of confusing abbreviations that appear in the field. The distinction between ionic liquids, ionic liquid–solvent mixtures, and deep eutectic solvents is also discussed.
Publisher: Elsevier BV
Date: 04-2019
Publisher: American Chemical Society (ACS)
Date: 27-12-2019
Publisher: Wiley
Date: 17-08-2016
Abstract: The ion dynamics in a novel sodium-containing room-temperature ionic liquid (IL) consisting of an ether-functionalised quaternary ammonium cation and bis(trifluoromethylsulfonyl)amide [NTf
Publisher: Elsevier BV
Date: 02-2017
DOI: 10.1016/J.JHAZMAT.2016.10.054
Abstract: Eight novel task-specific ionic liquids (TSILs) based on the thioglycolate anion designed for heavy metal extraction have been prepared and characterized by
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7FD00189D
Abstract: The important properties and applications of molecular liquid mixtures with ionic liquids and low melting organic salts are discussed.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CC01796K
Abstract: This work presents a new strategy for the promotion of CO 2 uptake by an intramolecular proton transfer reaction in amino functionalized hydroxypyridine based anions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CP00749B
Abstract: The coordination of zinc ions by tetraglyme has been investigated here to support the development of novel electrolytes for rechargeable zinc batteries. Zn(2+) reduction is electrochemically reversible from tetraglyme. The spectroscopic data, molar conductivity and thermal behavior as a function of zinc composition, between mole ratios [80 : 20] and [50 : 50] [tetraglyme : zinc chloride], all suggest that strong interactions take place between chloro-zinc complexes and tetraglyme. Varying the concentration of zinc chloride produces a range of zinc-chloro species (ZnClx)(2-x) in solution, which hinder full interaction between the zinc ion and tetraglyme. Both the [70 : 30] and [50 : 50] mixtures are promising electrolyte candidates for reversible zinc batteries, such as the zinc-air device.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3MA00434A
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CP03694D
Publisher: American Chemical Society (ACS)
Date: 10-09-2019
DOI: 10.26434/CHEMRXIV.9784595.V1
Abstract: Renewable energy has the ultimate capacity to resolve the environmental and scarcity challenges of the world’s energy supplies. However, both the utility of these sources and the economics of their implementation are strongly limited by their intermittent nature inexpensive means of energy storage therefore needs to be part of the design. Distributed thermal energy storage is surprisingly underdeveloped in this context, in part due to the lack of advanced storage materials. Here, we describe a novel family of thermal energy storage materials based on pyrazolium cation, that operate in the 100-220°C temperature range, offering safe, inexpensive capacity, opening new pathways for high efficiency collection and storage of both solar-thermal energy, as well as excess wind power. We probe the molecular origins of the high thermal energy storage capacity of these ionic materials and demonstrate extended cycling that provides a basis for further scale up and development.
Publisher: Elsevier BV
Date: 2016
Publisher: American Chemical Society (ACS)
Date: 31-10-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CP51102B
Abstract: Advanced, high energy-density, metal-air rechargeable batteries, such as zinc-air, are of intense international interest due to their important role in energy storage applications such as electric and hybrid vehicles, and to their ability to deal with the intermittency of renewable energy sources such as solar and wind. Ionic liquids offer a number of ideal thermal and physical properties as potential electrolytes in such large-scale energy storage applications. We describe here the synthesis and characterisation of a family of novel "chelating" ILs designed to chelate and solubilize the zinc ions to create electrolytes for this type of battery. These are based on quaternary alkoxy alkyl ammonium cations of varying oligo-ether side chains and anions such as p-toluene sulfonate, bis(trifluoromethylsulfonyl)amide and dicyanoamides. This work shows that increasing the ether chain length in the cation from two to four oxygens can increase the ionic conductivity and reduce the melting point from 67 °C to 15 °C for the tosylate system. Changing the anion also plays a significant role in the nature of the zinc deposition electrochemistry. We show that zinc can be reversibly deposited from [N(222(20201))][NTf2] and [N(222(202020201))][NTf2] beginning at -1.4 V and -1.7 V vs. SHE, respectively, but not in the case of tosylate based ILs. This indicates that the [NTf2] is a weaker coordinating anion with the zinc cation, compared to the tosylate anion, allowing the coordination of the ether chain to dominate the behavior of the deposition and stripping of zinc ions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CP02533D
Abstract: This perspective reports on the emerging field of room temperature ionic liquid electrolytes, applicable to rechargeable metal–air batteries.
Publisher: Wiley
Date: 25-03-2019
DOI: 10.1002/0471238961.IONISEDD.A01.PUB2
Abstract: An overview of the field of ionic liquids is presented, including the nomenclature and types of ionic liquids. Their synthesis and purification methods are described, along with typical characterisation procedures and general physico‐chemical properties. The various applications of ionic liquids are also summarised including in batteries, in green chemistry as low vapour pressure solvents, in medicinal chemistry and in protein stabilisation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1GC03420K
Abstract: This Perspective discusses the evolution and promise of the emerging application of ionic liquids for renewable thermal energy storage.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0JM04401F
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8EE02437E
Abstract: The first ex le of a family of low melting temperature ionic liquids based on the highly stable and inert closo -boron cluster anions is demonstrated. This, combined with excellent physiochemical and electrochemical properties makes this new family of ionic liquids a serious contender towards overcoming key challenges of electrolytes in energy storage systems.
Publisher: Elsevier BV
Date: 05-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7EE02716H
Abstract: High faradaic efficiency reduction of N 2 to NH 3 is achieved in ionic liquid media under ambient conditions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CP03318D
Abstract: We study the beneficial effects of multiple anionic species on the ion dynamics in a sodium-containing ionic liquid electrolyte.
Publisher: Elsevier BV
Date: 04-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CC00365C
Abstract: Sodium ion batteries (SIBs) are widely considered as alternative, sustainable, and cost-effective energy storage devices for large-scale energy storage applications.
Publisher: Wiley
Date: 30-12-2019
Publisher: American Chemical Society (ACS)
Date: 27-11-2019
DOI: 10.26434/CHEMRXIV.10325726
Abstract: Phase change materials (PCMs) which melt in the temperature range of 100-230 °C, are a promising alternative for the storage of thermal energy. In this range, large amounts of energy available from solar-thermal, or other forms of renewable heat, can be stored and applied to domestic or industrial processes, or to an Organic Rankine Cycle (ORC) engine to generate electricity. The amount of energy absorbed is related to the latent heat of fusion (ΔH sub f /sub ) and is often connected to the extent of hydrogen bonding in the PCM. Herein, we report fundamental studies, including crystal structure and Hirshfeld surface analysis, of a family of guanidinium organic salts that exhibit high values of ΔH sub f /sub , demonstrating that the presence and strength of H-bonds between ions plays a key role in this property.
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