Al2O3-Coated Si-Alloy Prepared by Atomic Layer Deposition as Anodes for Lithium-Ion Batteries

Lee, Kikang; Yoon, Sungho; Sung-Hwa, Hong; Kim, Hyun-Mi; Oh, Kyoung-Hee; Moon, Jeong-Tak

doi:10.3390/ma15124189

Cited by 8 publications

(5 citation statements)

References 67 publications

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“…Therefore, about 3 times improvement in the stability of the Bi 2 Te 3 anode by a-ZrO 2 nanocoating is attained and the rapid capacity decay in the few first cycles is postponed to higher cycles. We propose that similar to other ceramic-based materials, the a-ZrO 2 shell reduces the volume change of the Bi 2 Te 3 during the cycling process. Chemical reactions between the active material and the electrolyte may be suppressed as well because zirconium oxide has a low intendency to react with other materials .…”

Section: Resultsmentioning

confidence: 78%

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating

Taghizadegan,

Bolghanabadi,

Mohebi

et al. 2024

ACS Appl. Nano Mater.

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The interest in bismuth-based anodes for energy storage devices has recently been heightened due to their high specific capacity, low working potential, excellent electrical conductivity, and environmentally friendly nature. However, capacity fading during early battery cycling is associated with solid electrolyte interphase forming and volume changes that result in performance loss and cyclic instability. In this study, we propose a strategy to engineer the interface of nanostructured Bi 2 Te 3 particles with amorphous zirconium oxide nanocoating to enhance the performance of lithium-ion batteries (LIBs). The active nanomaterial was synthesized by mechanical alloying followed by low-temperature calcination of zirconium(IV) oxynitrate at 280 • C, which was predeposited on the particle surfaces via facile wet chemistry. X-ray photoelectron spectroscopy and transmission electron microscopy revealed that an amorphous ZrO 2 shell with few nanometer thicknesses uniformly formed and covered the particle surfaces. It was also found that Te and Bi oxides were formed at the surface, which facilitated stable interfacial bonds with the oxide nanocoating. Electrochemical studies determined that the amorphous oxide ceramic slightly increased the electrical resistance but significantly reduced the Li + diffusion coefficient (by an order of magnitude) and the formation of solid electrolyte phases. As a result, the discharge capacity of the nanostructured Bi 2 Te 3 anode enhanced from 145.8 mAh g −1 to 245.1 mAh g −1 after interfacial engineering by 2-nm-thick amorphous ZrO 2 nanocoating, while the stability was enhanced by three folds after 100 cycles at a current density of 0.5 C. The facile synthesis of amorphous nanocoating to engineer the interfacial of nanostructured anode materials paves the way to fabricate high-performance energy storage materials.

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Section: Resultsmentioning

confidence: 78%

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating

Taghizadegan,

Bolghanabadi,

Mohebi

et al. 2024

ACS Appl. Nano Mater.

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“…on the CNFs‐based composites as a covering layer. [ 334 ] The third strategy is the optimization of the electrolyte is also an effective method, especially the introduction of electrolyte additives, such as fluoroethylene carbonate (FEC), vinylene carbonate (VC), etc. can passivate the electrode materials/electrolyte interphases during the initial lithiation process to form a stable SEI layer.…”

Section: Conclusion and Perspectivementioning

confidence: 99%

Advanced Carbons Nanofibers‐Based Electrodes for Flexible Energy Storage Devices

Sun,

Han,

Wang

et al. 2023

Adv Funct Materials

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The rapid developments of the Internet of Things (IoT) and portable electronic devices have created a growing demand for flexible electrochemical energy storage (EES) devices. Nevertheless, these flexible devices suffer from poor flexibility, low energy density, and poor dynamic stability of power output during deformation, limiting their practical applications. Carbon nanofibers (CNFs) with high conductivity, good flexibility, and large‐scale preparation are regarded as promising electrodes for flexible EES devices. Based on the issues of current flexible EES devices, this review presents various strategies from the design of CNFs‐based electrodes to the fabrication of devices and overviews their applications in various flexible metal ion/air batteries (Li/Na/K‐ion batteries, Li‐S batteries, metal–air batteries, and other novel secondary batteries) and supercapacitors. Finally, the remaining challenges and perspectives on the CNFs‐based flexible EES devices are proposed to provide guidance for the researchers concentrating on high‐performance flexible EES devices.

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“…Several ALD coatings, such as Al 2 O 3 , AlNx, and TiO 2 , have already been studied on Si anodes. However, the low mechanical flexibility of these metal oxides limited their ability to sustain the long-term and reliable cyclability of Si anodes.…”

Section: Introductionmentioning

confidence: 99%

“…17 The application of a surface coating has been confirmed to be effective in maintaining the mechanical integration of Si anodes, eliminating SEI formation, and therefore boosting their electrochemical performance. 9,18,19 Several ALD coatings, such as Al 2 O 3 , 20 AlNx, 21 and TiO 2 , 22 have already been studied on Si anodes. However, the low mechanical flexibility of these metal oxides limited their ability to sustain the long-term and reliable cyclability of Si anodes.…”

Section: ■ Introductionmentioning

confidence: 99%

Molecular Layer Deposition of Organic–Inorganic Hafnium Oxynitride Hybrid Films for Electrochemical Applications

Ablat

Richey

et al. 2023

ACS Appl. Energy Mater.

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The molecular layer deposition (MLD) method can be used to deposit hybrid organic–inorganic films with precisely defined composition, flexible properties, and conformality on different substrates. In this study, hafnium-based organic–inorganic hybrid polymer films were studied as potential coatings for silicon nanoparticles (SiNPs) used in composite lithium-ion battery (LIB) anodes, an application which requires the film to be both flexible and stable under electrochemical conditions. Hf-hybrid films were successfully deposited by MLD using sequential exposure of the homoleptic tetrakis(dimethylamido) hafnium complex and ethanolamine as the reactants. The self-limiting surface reactions lead to a constant growth per cycle (GPC) of ∼2.0 Å/cycle at 120 °C. Temperature-dependent growth was observed, with the GPC decreasing from ∼2.5 to ∼1.1 Å/per cycle as the temperature was increased from 65 to 145 °C. Scanning transmission electron microscopy and electron energy loss spectroscopy mapping confirm that a thin, dense, and conformal Hf-based MLD layer is deposited on the SiNPs. The presence of expected C–N, C–O, and −CH2 moieties in the MLD films was confirmed by Fourier transform infrared spectroscopy. Hafnium nitride and hafnium oxide bonds within the hybrid thin films were identified by X-ray photoelectron spectroscopy. Characterization results indicated that the deposited hafnium-based organic–inorganic hybrid films contain both metal oxynitride bonds and organic bonds, including C–C, C–O, and C–N. This Hf-based MLD thin film was tested on LIB SiNP composite anodes as an artificial solid–electrolyte interphase, with results showing that the capacity retention increased by about 35% after 110 cycles in a LIB application.

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Al2O3-Coated Si-Alloy Prepared by Atomic Layer Deposition as Anodes for Lithium-Ion Batteries

Cited by 8 publications

References 67 publications

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating

Advanced Carbons Nanofibers‐Based Electrodes for Flexible Energy Storage Devices

Molecular Layer Deposition of Organic–Inorganic Hafnium Oxynitride Hybrid Films for Electrochemical Applications

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Al2O3-Coated Si-Alloy Prepared by Atomic Layer Deposition as Anodes for Lithium-Ion Batteries

Cited by 8 publications

References 67 publications

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi2Te3 Particles with Amorphous ZrO2 Nanocoating

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi2Te3 Particles with Amorphous ZrO2 Nanocoating

Advanced Carbons Nanofibers‐Based Electrodes for Flexible Energy Storage Devices

Molecular Layer Deposition of Organic–Inorganic Hafnium Oxynitride Hybrid Films for Electrochemical Applications

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Product

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About

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating

Enhanced Electrochemical Performance and Cyclic Stability of Li-Ion Batteries by Employing Nanostructured Bi₂Te₃ Particles with Amorphous ZrO₂ Nanocoating