https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20313 Wed 28 Aug 2024 10:41:59 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33574 Wed 21 Nov 2018 14:49:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50877 Wed 16 Aug 2023 10:51:36 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14672 Wed 11 Apr 2018 16:24:54 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31445 Wed 11 Apr 2018 14:55:03 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22987 Wed 11 Apr 2018 10:54:18 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:14442 Wed 11 Apr 2018 10:48:05 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:31333 1,4]TFSA). AFM measurements reveal that the imidazolium cation adsorbs at the H-Si(111)/[EMIm]TFSA interface leading to an ordered clustered facet structure of ∼3.8 nm in size. In comparison, the Si(111)/[Py_1,4]TFSA interface appeared the same as the native surface in argon. For both pure ILs, repulsive forces were measured as the tip approached the surface. On addition of LiTFSA attractive forces were measured, revealing marked changes in the interfacial structure.]]> Wed 11 Apr 2018 09:55:10 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:13680 − anion-enriched layer is more lubricating than either the [BMIM]⁺ or FAP^- layers. The effect of cation charged group (charge-delocalised versus charged-localised) was investigated by comparing [BMIM] FAP with 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate ([Py] FAP). [BMIM] FAP is less lubricating at negative potentials, but more lubricating at positive potentials. This indicated that even at positive potentials the cation concentration in the boundary layer is sufficiently high to influence lubricity. The influence of sliding velocity on lateral force was investigated for the [EMIM] FAP–Au(111) system. At neutral potentials the behaviour is consistent with a discontinuous sliding process. When a positive or negative potential bias is applied, this effect is less pronounced as the colloid probe slides along a better defined ion plane.]]> Tue 13 Aug 2024 14:38:51 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:56154 Thu 08 Aug 2024 14:45:17 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7233 Sat 24 Mar 2018 08:33:47 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:10246 Sat 24 Mar 2018 08:13:09 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19655 Sat 24 Mar 2018 08:01:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27116 Sat 24 Mar 2018 07:41:36 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26070 Sat 24 Mar 2018 07:31:30 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24137 3+ system, less obviously for the divalent ions and not at all for monovalent ions. This difference is attributed to the strength of electrostatic interactions between metal ions and mica charge sites increasing with the ion charge, which means that divalent and (particularly) trivalent ions are located more precisely above the charged sites of the mica lattice. The images obtained allow important distinctions between metal ion adsorption at mica-water and mica-PAN interfaces to be made.]]> Sat 24 Mar 2018 07:16:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23832 Sat 24 Mar 2018 07:12:13 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40107 60 and C₇₀ fullerene (CFEx) and Super-P carbon black were tested and compared as cathodes for non-aqueous aluminium-ion batteries (AIBs). These materials differ in their general structure, porosity and morphology. Fullerenes display a crystalline structure, whereas hemp fibers, Super-P and hair are amorphous in nature. Of all materials, AC obtained from hair recorded the highest specific capacity after 50 cycles at 103 mAh g⁻¹ with a Coulombic efficiency of ∼90 % at a current rate of 50 mA g⁻¹. Both hemp fibers and Super-P achieved their highest specific capacities at 56 mAh g⁻¹ and 84 mAh g⁻¹ respectively. CFEx recorded its highest capacity at 78 mAh g⁻¹ and maintained it for 50 cycles. The cells were charged and discharged to 2.45 V and 0.2 V respectively.]]> Mon 29 Jan 2024 17:43:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22100 5 in two hydrophobic ionic liquids (1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl) trifluorophosphate ([Py_1,4]FAP) and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide ([Py_1,4]TFSA) is probed using three in situ techniques: scanning tunneling microscopy (STM), atomic force microscopy (AFM), and electrochemical quartz crystal microbalance (EQCM). These techniques reveal that under similar conditions TaF₅is more easily reduced in the liquids with [TFSA]⁻ than [FAP]⁻anions. Increasing the temperature reduced the viscosity and density of the ionic liquids which facilitates TaF₅ electroreduction, in particular, in [Py_1,4]TFSA. A herringbone reconstruction of the Au electrode was observed by STM for both ionic liquids with and without TaF₅. Ta deposition was proved by STM and EQCM in [Py_1,4]TFSA. Cracked layers, with ionic liquid trapped inside, were obtained by direct plating from the [TFSA]− ionic liquid. No Ta containing deposits could be obtained in the liquid with the [FAP]− anion.]]> Mon 23 Sep 2019 11:13:11 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24002 in situ techniques: scanning tunneling microscopy (STM), atomic force microscopy (AFM), and electrochemical quartz crystal microbalance (EQCM). These techniques reveal that under similar conditions TaF₅ is more easily reduced in the liquids with [TFSA]⁻ than [FAP]-anions. Increasing the temperature reduced the viscosity and density of the ionic liquids which facilitates TaF₅ electroreduction, in particular, in [Py₁,₄]TFSA. A herringbone reconstruction of the Au electrode was observed by STM for both ionic liquids with and without TaF₅. Ta deposition was proved by STM and EQCM in [Py₁,₄]TFSA. Cracked layers, with ionic liquid trapped inside, were obtained by direct plating from the [TFSA]⁻ ionic liquid. No Ta containing deposits could be obtained in the liquid with the [FAP]⁻ anion.]]> Mon 23 Sep 2019 10:21:47 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51081 Fri 18 Aug 2023 09:32:00 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24748 Fri 16 Aug 2024 16:22:32 AEST ]]>