Journal ArticleDOI
Macroporous Silicon Formation on n-Si in Room-Temperature Fluorohydrogenate Ionic Liquid
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TLDR
In this article, the authors reported the formation of porous silicon (PS) by application of a positive potential on n-type silicon without illumination in 1-ethyl-3methylimidazolium oligofluorohydrogenate [EtMeIm(FH) 2.3 F] room-temperature ionic liquid.Abstract:
This communication reports the formation of porous silicon (PS) by application of a positive potential on n-type silicon without illumination. PS films were formed in 1-ethyl-3-methylimidazolium oligofluorohydrogenate [EtMeIm(FH) 2.3 F] room-temperature ionic liquid, and the surface morphology strongly depended on the time and the applied potential. The results indicate that EtMeIm(FH) 2.3 F could be a nonaqueous solvent equivalent to hydrofluoric acid, allowing the formation of pores under anodic polarization.read more
Citations
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Journal ArticleDOI
Integration of porous layers in ordered pillar arrays for liquid chromatography
Wim De Malsche,Wim De Malsche,David Clicq,Vincent Verdoold,Piotr Gzil,Gert Desmet,Han J.G.E. Gardeniers +6 more
TL;DR: This method for the production of partly porous micro-pillars in columns suitable for use in liquid chromatography increases the available surface at least two orders of magnitude without destroying the huge benefits of the ordered nature of the system.
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Study and development of non-aqueous silicon-air battery
Gil Cohn,Yair Ein-Eli +1 more
TL;DR: In this paper, a silicon-air battery utilizing a single-crystal heavily doped n-type silicon wafer anode and an air cathode is reported, which employs hydrophilic 1-ethyl-3-methylimidazolium oligofluorohydrogenate [EMI·(HF) 2.3 F] room temperature ionic liquid electrolyte.
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Silicon and Iron as Resource-Efficient Anode Materials for Ambient-Temperature Metal-Air Batteries: A Review
Henning Weinrich,Yasin Emre Durmus,Yasin Emre Durmus,Hermann Tempel,Hans Kungl,Rüdiger-A. Eichel,Rüdiger-A. Eichel +6 more
TL;DR: This review will outline the challenges, which explicitly apply to silicon- and iron-air batteries and prevented them from a broad implementation so far, and provide an extensive literature survey regarding state-of-the-art experimental approaches, which are set to resolve the aforementioned challenges and might enable the introduction of silicon-and iron- air batteries into the battery market in the future.
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New insight into the discharge mechanism of silicon–air batteries using electrochemical impedance spectroscopy
TL;DR: The mechanism of discharge termination in silicon-air batteries, employing a silicon wafer anode, a room-temperature fluorohydrogenate ionic liquid electrolyte and an air cathode membrane, is investigated using a wide range of tools and it is found that the silicon anode potential has the highest negative impact on the battery discharge voltage.
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Room-Temperature Fluorohydrogenate Ionic Liquids of Alkylpyridinium Cations and Allylated Quarternary Cyclic Ammonium Cations
TL;DR: In this article, a series of fluorohydrogenate ionic liquids (FHILs), Cat + (FH) 2.3 F (Cat + : alkylpyridinium cations and allylated quarternary cyclic ammoniumcations), are prepared, and their physical and electrochemical properties are characterized.
References
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Journal ArticleDOI
Formation and application of porous silicon
TL;DR: In this article, all manifestations of pores in silicon are reviewed and discussed with respect to possible applications, with particular emphasis on macropores, which are classified in detail and reviewed in the context of pore formation models.
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Morphology and Formation Mechanisms of Porous Silicon
TL;DR: In this paper, a conceptual analysis of the various aspects in the morphology and formation mechanisms of porous silicon in light of currently available information on the fundamental reaction processes on silicon electrodes is presented.
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Porous Silicon Formation and Electropolishing of Silicon by Anodic Polarization in HF Solution
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The Electrochemical Oxidation of Silicon and Formation of Porous Silicon in Acetonitrile
Eric K. Propst,Paul A. Kohl +1 more
TL;DR: In this paper, photoelectrochemical oxidation and dissolution of silicon has been investigated in the absence of water and oxygen, and the etch rate and photocurrent for n-Si in an anhydrous, HF-acetonitrile solution were directly proportional to light intensity.
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A Highly Conductive Room Temperature Molten Fluoride: EMIF ⋅ 2.3 HF
TL;DR: In this paper, the reaction of 1-ethyl-3methylimidazolium chloride (EMICl) and anhydrous hydrogen fluoride gives a nonvolatile, room temperature molten salt.