Electrochemical Deposition of Nanostructured Metals and Alloys from Ionic Liquids
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H. Natter
Metals like aluminium, magnesium, tungsten or their alloys cannot be electrodeposited from aqueous electrolytes. We have developed a procedure using AlCl3-based ionic liquids for the deposition of nanostructured metals and alloys. The ionic liquids (IL) employed for these studies consist of mixtures of an inorganic (e.g., AlCl3) and an organic component (e.g., 1-butyl-3-methyl-imidazoliumchloride or [BMIm]Cl). In our contribution we describe the electrochemical deposition of less noble metals like Al or Fe and alloys like AlxMn1−x with a controlled nanostructure. The variation of physical and chemical process parameters allows the deposition of samples with crystallite sizes from 10 up to several hundred nm. Deposits prepared from IL's show remarkable properties. Based on nanoindentation measurements we observe crystallite size dependent microhardness for nanostructured aluminium (from 1.44 GPa (100 nm) to 3.40 GPa (14 nm)). The thermal stability of the deposits was measured by high temperature X-ray diffraction. The deposits show a thermal stability up to 350 °C resulting from oxide impurities in the grain boundaries. An activiation energy of 41 kJ/mol can be determined for the crystallite growth process. The magnetization curves of nanostructurd iron exhibit soft magnetic behavior; the coercivity is inverse proportional to the crystallite size.
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Artikel in diesem Heft
- Preface: 92nd Bunsenkolloquium – Physical Chemistry in Ionic Liquids
- Relaxation Dynamics upon Ultrashort UV Photo-Excitation of an Iodide Doped Ionic Liquid and of a Pure Lithium Iodide Melt
- Electrochemistry in Room Temperature Ionic Liquids: A Review and Some Possible Applications
- Electrochemical Deposition of Nanostructured Metals and Alloys from Ionic Liquids
- Coating of Mild Steel by Aluminium in the Ionic Liquid [EMIm]Tf2N and its Corrosion Performance
- Microviscosity and Micropolarity Effects of Imidazolium Based Ionic Liquids Investigated by Spin Probes Their Diffusion and Spin Exchange
- Semi-Empirical Methods to Predict the Physical Properties of Ionic Liquids: An Overview of Recent Developments
- Water Vibrational Bands as a Polarity Indicator in Ionic Liquids
- Probing Lithium and Alumina Impurities in Air- and Water Stable Ionic Liquids by Cyclic Voltammetry and In Situ Scanning Tunneling Microscopy
- The Static Dielectric Constant of Ionic Liquids
- A Comparative Study on the Electronic Structure of the 1-Ethyl-3-Methylimidazolium Bis(trifluoromethylsulfonyl)amide RT-Ionic Liquid by Electron Spectroscopy and First Principles Calculations
- Phase Separation in Solutions of Room Temperature Ionic Liquids in Hydrocarbons
- Surface Studies on the Ionic Liquid 1-Ethyl-3-Methylimidazolium Ethylsulfate Using X-Ray Photoelectron Spectroscopy (XPS)
- Templating and Phase Behaviour of the Long Chain Ionic Liquid C16mimCl
- Preparation of CdSe Quantum Dots in Ionic Liquids
- Electrochemistry at Negative Potentials in Bis(trifluoromethanesulfonyl)amide Ionic Liquids
- Enthalpies of Solution of Organic Solutes in the Ionic Liquids [Me3BuN][NTf2] and [EMIM][EtSO4]
- Electrodeposition of Metals for Micro- and Nanostructuring at Interfaces between Solid, Liquid and Gaseous Conductors: Dendrites, Whiskers and Nanoparticles
Artikel in diesem Heft
- Preface: 92nd Bunsenkolloquium – Physical Chemistry in Ionic Liquids
- Relaxation Dynamics upon Ultrashort UV Photo-Excitation of an Iodide Doped Ionic Liquid and of a Pure Lithium Iodide Melt
- Electrochemistry in Room Temperature Ionic Liquids: A Review and Some Possible Applications
- Electrochemical Deposition of Nanostructured Metals and Alloys from Ionic Liquids
- Coating of Mild Steel by Aluminium in the Ionic Liquid [EMIm]Tf2N and its Corrosion Performance
- Microviscosity and Micropolarity Effects of Imidazolium Based Ionic Liquids Investigated by Spin Probes Their Diffusion and Spin Exchange
- Semi-Empirical Methods to Predict the Physical Properties of Ionic Liquids: An Overview of Recent Developments
- Water Vibrational Bands as a Polarity Indicator in Ionic Liquids
- Probing Lithium and Alumina Impurities in Air- and Water Stable Ionic Liquids by Cyclic Voltammetry and In Situ Scanning Tunneling Microscopy
- The Static Dielectric Constant of Ionic Liquids
- A Comparative Study on the Electronic Structure of the 1-Ethyl-3-Methylimidazolium Bis(trifluoromethylsulfonyl)amide RT-Ionic Liquid by Electron Spectroscopy and First Principles Calculations
- Phase Separation in Solutions of Room Temperature Ionic Liquids in Hydrocarbons
- Surface Studies on the Ionic Liquid 1-Ethyl-3-Methylimidazolium Ethylsulfate Using X-Ray Photoelectron Spectroscopy (XPS)
- Templating and Phase Behaviour of the Long Chain Ionic Liquid C16mimCl
- Preparation of CdSe Quantum Dots in Ionic Liquids
- Electrochemistry at Negative Potentials in Bis(trifluoromethanesulfonyl)amide Ionic Liquids
- Enthalpies of Solution of Organic Solutes in the Ionic Liquids [Me3BuN][NTf2] and [EMIM][EtSO4]
- Electrodeposition of Metals for Micro- and Nanostructuring at Interfaces between Solid, Liquid and Gaseous Conductors: Dendrites, Whiskers and Nanoparticles
