Atomic Layer Deposition of Ni-Co-O Thin-Film Electrodes for Solid-State LIBs and the Influence of Chemical Composition on Overcapacity

Koshtyal, Yury; Mitrofanov, Ilya; Nazarov, D. V.; Medvedev, Oleg; Kim, Artem; Ezhov, Ilya; Rumyantsev, А. М.; Popovich, Anatoly; Maximov, Maxim

doi:10.3390/nano11040907

Cited by 17 publications

(6 citation statements)

References 71 publications

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“…The CV curves of a series of SS_LiTaO-1/2 samples (Figure 4) and coatings of the Ta-O system have a general trend: in the anodic region (3.0-0.1 V), there is current amplification, which is most likely associated with the formation of SEI film [16], and no current increases are observed in the potential cathode range (4.3-3.0 V -inset in Figure 4). Further cycling at currents from 20 to 80 µA/cm2 in the cathode potential range (4.3-3.0 V) showed the presence of a minimum capacity of about 2.0-1.5 μA•h•μm-1•cm-2 (0.14-0.07 μA•h), for example in our previous work on the lithium-nickel-silicon oxide cathode study [1], the capacity of the cathode material was 30-20 μA•h•μm-1•cm-2, so we can consider that this thin film of LiTaO-1/2 does not affect on the final capacity.…”

Section: Figure 4 Cyclic Voltammetry (Cv) Curves and Results Of Cycli...mentioning

confidence: 99%

Plasma enhanced atomic layer deposition of solid-state electrolyte Li-Ta-O for solid-state batteries

Федоров

Olkhovskii

Nazarov

et al. 2021

NANOCON 2021 Conference Proeedings

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Solid-state batteries (SSBs) are regarded as the next step in energy storage technology. One of the main problems in developing such batteries is developing and synthesizing solid-state electrolytes (SSE). The main factor that stops the introduction of SSBs into everyday life is the low ionic conductivity of Li ions in modern SSEs. Therefore, the primary purposes of the work are to establish the reasons for the manifestation of this inhibiting factor and to assess the possibility of using new materials for SSLIB. Solution these problems ultimately can give an impetus to the development and promotion of such type batteries. In this work, SSE was obtained by the atomic layer deposition (ALD) method, allowing the formation of homogeneous coatings with precision control of the thickness. ALD of LixTaOy thin films on silicon and stainless steel substrates using Ta(OEt)5 and LiOtBu was studied. The synthesis temperature was 300 °С, which is based on the previous research. Samples were synthesized with different ratios of Li:Ta = 1:2, 1:3, 1:7, and depending on the ratio of metals, the growth rate per supercycle varied from 0.21 to 0.46 nm. The film thickness was determined by spectral ellipsometry. A scanning electron microscopy was used to determine the conformity and morphology of the coatings. X-ray Photoelectron Spectroscopy was used to determine the elemental composition on the surface and in the bulk of SSE. According to X-ray diffraction, thin films are amorphous. Cyclic voltammetry has been used to study how thin films will respond to different voltages. The cathodic region cycling at various discharge currents (from 20 to 80 µA/cm2) presents a low capacity.

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Section: Figure 4 Cyclic Voltammetry (Cv) Curves and Results Of Cycli...mentioning

confidence: 99%

Plasma enhanced atomic layer deposition of solid-state electrolyte Li-Ta-O for solid-state batteries

Федоров

Olkhovskii

Nazarov

et al. 2021

NANOCON 2021 Conference Proeedings

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“…In the works [43,44,83], the characteristic of the crystalline phase was not detected on the XRD patterns. In one of the considered works [133], a study of coatings using electron diffraction (SAED) revealed that its structure is polycrystalline.…”

Section: The Presence Of a Crystalline Structure And The Density Of G...mentioning

confidence: 96%

“…• the cathode capacity decreases less during cycling [7,29,30,32,34,35,43,45 there is no effect of lithium-rich cathode materials on voltage reduction during cyclic charge-discharge [30,66]; • the growth of resistance during cycling is reduced [7,33,42,53,56,107,111,119,121-123, 136,153].…”

Section: Summary List Of Observed Effects On the Electrochemical Prop...mentioning

confidence: 99%

Applications and Advantages of Atomic Layer Deposition for Lithium-Ion Batteries Cathodes: Review

et al. 2022

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Nowadays, lithium-ion batteries (LIBs) are one of the most convenient, reliable, and promising power sources for portable electronics, power tools, hybrid and electric vehicles. The characteristics of the positive electrode (cathode active material, CAM) significantly contribute to the battery’s functional properties. Applying various functional coatings is one of the productive ways to improve the work characteristics of lithium-ion batteries. Nowadays, there are many methods for depositing thin films on a material’s surface; among them, one of the most promising is atomic layer deposition (ALD). ALD allows for the formation of thin and uniform coatings on surfaces with complex geometric forms, including porous structures. This review is devoted to applying the ALD method in obtaining thin functional coatings for cathode materials and includes an overview of more than 100 publications. The most thoroughly investigated surface modifications are lithium cobalt oxide (LCO), lithium manganese spinel (LMO), lithium nickel-cobalt-manganese oxides (NCM), lithium-nickel-manganese spinel (LNMO), and lithium-manganese rich (LMR) cathode materials. The most studied processes of deposition are aluminum oxide (Al2O3), titanium dioxide (TiO2) and zirconium dioxide (ZrO2) films. The primary purposes of such studies are to find the synthesis parameters of films, to find the optimal coating thickness (e.g., ~1–2 nm for Al2O3, ~1 nm for ZrO2, <1 nm for TiO2, etc.), and to reveal the effect of the coating on the electrochemical parameters of batteries. The review summarizes synthesis conditions, investigation results of deposited films on CAMs and positive electrodes and some functional effects observed due to films obtained by ALD on cathodes.

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“…A single cycle consisted of NiCp2/purge/O3/purge = 1.0/10.0/6.0/10.0 s. The deposition temperature remained at 250 °C, with a sublimation temperature of NiCp2 at 110 °C. A similar growth approach was employed in previous studies [39,40]. The initial NiO film thickness for enhancing CNT growth ranged from 3.5 to 3.9 nm [41].…”

Section: Growing Of Cntsmentioning

confidence: 99%

“…NiO was deposited through the sequential exposure of CNTs to NiCp 2 and O 3 -H 2 O, with pulse durations of 1 s and 6 s, respectively, and a 10 s N 2 gas purge time. A single cycle consisted of NiCp 2 /purge/O 3 /purge = 1.0/10.0/6.0/10.0 s. The deposition temperature remained at 250 • C, with a sublimation temperature of NiCp 2 at 110 • C. A similar growth approach was employed in previous studies [39,40]. The initial NiO film thickness for enhancing CNT growth ranged from 3.5 to 3.9 nm [41].…”

Section: Growing Of Cntsmentioning

confidence: 99%

Investigation of Field Emission Properties of Carbon Nanotube Arrays of Different Morphologies

Chumak,

Shchegolkov,

Popov

et al. 2024

Nanomaterials

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This article presents, for the first time, a comparative analysis of the emission characteristics of large-area field-effect cathodes (LAFE) based on carbon nanotubes (CNTs) of various morphologies according to key parameters using a unique computerized technique. The work presents a description of a technology for creating various CNT arrays and their comprehensive structure characterization. All CNT arrays synthesized by the catalytic PECVD method on a silicon substrate showed a high degree of chemical purity under the presented technological conditions. In some cases, nanoisland films of Fe were used as a catalyst; in others, thin films of NiO were used, which were deposited on a silicon wafer by chemical vapor deposition (CVD) and atomic layer deposition (ALD), respectively. As a result of these studies, it turned out that an array with a thick CNT coating has good resistance to the action of strong electric fields, fairly good uniformity of distribution of emission centers, a fairly high selection current (2.88 mA/cm2 at 4.53 V/μm), and compliance with the normal current mode according to the “orthodox” test, which makes the morphology of such structures the most promising for further technological optimization of CNT-based cathodes for various practical applications.

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Atomic Layer Deposition of Ni-Co-O Thin-Film Electrodes for Solid-State LIBs and the Influence of Chemical Composition on Overcapacity

Cited by 17 publications

References 71 publications

Plasma enhanced atomic layer deposition of solid-state electrolyte Li-Ta-O for solid-state batteries

Plasma enhanced atomic layer deposition of solid-state electrolyte Li-Ta-O for solid-state batteries

Applications and Advantages of Atomic Layer Deposition for Lithium-Ion Batteries Cathodes: Review

Investigation of Field Emission Properties of Carbon Nanotube Arrays of Different Morphologies

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