Synthesis of T-Nb2O5 thin-films deposited by Atomic Layer Deposition for miniaturized electrochemical energy storage devices

Ouendi, Saliha; Arico, Cassandra; Blanchard, Florent; Codron, Jean-Louis; Wallart, X.; Taberna, Pierre Louis; Roussel, Pascal; Clavier, Laurent; Simon, Patrice; Lethien, Christophe

doi:10.1016/j.ensm.2018.08.022

Cited by 46 publications

(33 citation statements)

References 51 publications

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“…As a typical intercalation anode material, the crystal structure of T‐Nb 2 O 5 in layered arrangement is quite suitable for the intercalation of Li ions. As demonstrated in Figure a1, amorphous Nb 2 O 5 (a‐Nb 2 O 5 ) was grown onto a Pt current collector, which is deposited on a Si wafer . A 30–90 nm amorphous Nb 2 O 5 film could be transformed into crystalline T‐Nb 2 O 5 phase after further annealing.…”

Section: Amos In the Lithium And Post‐lithium‐ion Batteriesmentioning

confidence: 99%

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Yan

Abhilash

Tang

et al. 2018

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possess lower hardness, higher strength, higher elasticity, higher tensile strength, lower internal energy, higher interatomic forces, lower viscosity coefficient, larger surface area, higher chemical stability, and strong corrosion resistance compared with their crystalline counterparts. [1][2][3] Based on the anionic constituents, amorphous materials could be categorized as oxides, sulfides, phosphates, etc. Among them, amorphous metal oxide family is of great importance owing to its widespread applications in a variety of areas such as batteries, supercapacitors, electronics, conducting films, multilayered transistors, electrochromic displays, nonvolatile memories, and the like. [4][5][6] As the basic building blocks, metaloxide (M-O) polyhedra are responsible for the essential features of the electronic band structure in amorphous metal oxides (AMOs). [3] AMO materials differ from their crystalline counterparts in the arrangement of M-O polyhedra, in which a random network arrangement of distorted polyhedra with short-range ordering is presented rather than maintaining perfect periodicity. [7,8] The coordination number of the M-O polyhedra, namely, the number of anions bonded to the metal cation, constitutes a crucially decisive factor for the unique properties of AMOs. Multiple polyhedra are interconnected through different types of sharing configurations known as edge sharing, corner sharing, and face sharing of the oxygen atoms. The combination of different sharing geometries also affects the properties of AMOs. [9] In other words, AMOs are formed by the superposition of the distorted M-O polyhedra to form network arrays through a random package. Long-range structural disorder in the AMO reduces scattering mean free path, and the lack of grain boundaries makes the electronic properties identical within large areas. These unique characteristics make them suitable for flexible electronics such as flexible films, intervening layers, thin film transistors, etc. [10][11][12] In recent years, there are numerous reports pointing out the advantages of AMOs over the crystalline counterparts in many electrochemical applications. [13][14][15][16][17] For example, the inherent disorderliness in the structural arrangement and rich defects are evidenced to be highly constructive to improve the alkali ion diffusion through the lattice. [18,19] As for intercalation-type electrodes in lithium-ion batteries (LIBs), amorphous materials Amorphous metal oxides (AMOs) have aroused great enthusiasm across multiple energy areas over recent years due to their unique properties, such as the intrinsic isotropy, versatility in compositions, absence of grain boundaries, defect distribution, flexible nature, etc. Here, the materials engineering of AMOs is systematically reviewed in different electrochemical applications and recent advances in understanding and developing AMO-based high-performance electrodes are highlighted. Attention is focused on the important roles that AMOs play in various energy storage and conversion technologies...

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Section: Amos In the Lithium And Post‐lithium‐ion Batteriesmentioning

confidence: 99%

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Yan

Abhilash

Tang

et al. 2018

Small

224

120

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“…The impetuous for the redox replacement reactions between two or more reactive metals is driven by the difference between their standard potentials [20][21][22][23][24][25][26][27][28][29][30]. This is not only the basic principle of EDRR (electrodeposition-redox replacement) but also of similar methods like surface-limited redox replacement (SLRR) [29][30][31][32] and electrochemical atomic layer deposition (e-ALD) [33][34][35][36]; the main difference is that in SLRR and e-ALD thin, defect free monolayers are formed via underpotential deposition, whereas in EDRR more porous films grow on the surface. In contrast, electrowinning (EW) relies on the direct electroplating of the desired metal element on the electrode surface-by the application of the appropriate potential or current-to produce a surface layer.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical recovery of tellurium from metallurgical industrial waste

et al. 2019

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The current study outlines the electrochemical recovery of tellurium from a metallurgical plant waste fraction, namely Doré slag. In the precious metals plant, tellurium is enriched to the TROF (Tilting, Rotating Oxy Fuel) furnace slag and is therefore considered to be a lost resource-although the slag itself still contains a recoverable amount of tellurium. To recover Te, the slag is first leached in aqua regia, to produce multimetal pregnant leach solution (PLS) with 421 ppm of Te and dominating dissolved elements Na, Ba, Bi, Cu, As, B, Fe and Pb (in the range of 1.4-6.4 g dm −3), as well as trace elements at the ppb to ppm scale. The exposure of slag to chloride-rich solution enables the formation of cuprous chloride complex and consequently, a decrease in the reduction potential of elemental copper. This allows improved selectivity in electrochemical recovery of Te. The results suggest that electrowinning (EW) is a preferred Te recovery method at concentrations above 300 ppm, whereas at lower concentrations EDRR is favoured. The purity of recovered tellurium is investigated with SEM-EDS (scanning electron microscope-energy dispersion spectroscopy). Based on the study, a new, combined two-stage electrochemical recovery process of tellurium from Doré slag PLS is proposed: EW followed by EDRR.

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“…Numerous pseudocapacitive materials such as 2D Transition Metal Carbides (MXene) [10][11][12], Transition Metal Nitrides (TMN: Mo x N, VN…) [9,[13][14][15][16], or Transition Metal Oxides (TMO: RuO 2 , MnO 2 , T-Nb 2 O 5 ) [17][18][19][20][21] have been investigated for on chip micro-supercapacitors. The most straightforward solution to improve the energy performance of miniaturized electrochemical capacitors deals with the deposition of thick electrodes using these pseudocapacitive materials [2].…”

Section: Introductionmentioning

confidence: 99%

On chip MnO2-based 3D micro-supercapacitors with ultra-high areal energy density

Bounor

Asbani

Douard

et al. 2021

Energy Storage Materials

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In the near future, Internet of Things will be widely deployed all over the connected world. Powering will be crucial for miniaturized electronic devices requiring fast charging, high energy density and long term-durability. 3D micro-supercapacitors are an attractive energy storage solution at the millimeter scale to power miniaturized IoT devices exhibiting small form factor packaging issues. However, there are nowadays not any microdevices on the shelves that could fulfill both energy and mass production requirements. Here, we demonstrate the collective fabrication of 3D micro-supercapacitors (MSCs) integrated on silicon wafer and using MnO 2 as the active electrode material and 5M aqueous LiNO 3 as the electrolyte. 0.05 -0.1 mWh cm -2 energy densities reached by the fabricated 3D MSCs are remarkable, exceeding those of state-of-the-art micro-supercapacitors, competing those of hybrid microdevices and approaching the performance of lithium micro-batteries. Without sacrificing the power performance (> 1 mW cm -2 ), the 3D MSCs demonstrate a very good cycling behavior over 10 000 cycles (~ 15 % loss). energy density without sacrificing neither the power density (> 1 mW cm -2 ) nor the cycling performance (>10 000 cycles).

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Synthesis of T-Nb2O5 thin-films deposited by Atomic Layer Deposition for miniaturized electrochemical energy storage devices

Abstract: OATAO is an open access repository that collects the work of some Toulouse researchers and makes it freely available over the web where possible.

Cited by 46 publications

References 51 publications

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Electrochemical recovery of tellurium from metallurgical industrial waste

On chip MnO2-based 3D micro-supercapacitors with ultra-high areal energy density

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