scholarly journals Enhanced Cyclability of Cr8O21 Cathode for PEO-Based All-Solid-State Lithium-Ion Batteries by Atomic Layer Deposition of Al2O3

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5380
Author(s):  
Haichang Zhang ◽  
Zhibin Xu ◽  
Bin Shi ◽  
Fei Ding ◽  
Xingjiang Liu ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Solid State ◽  
Atomic Layer Deposition ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Atomic Layer ◽  
High Energy ◽  
High Energy Density ◽  
Al2o3 Layer ◽  
Layer Deposition

Cr8O21 can be used as the cathode material in all-solid-state batteries with high energy density due to its high reversible specific capacity and high potential plateau. However, the strong oxidation of Cr8O21 leads to poor compatibility with polymer-based solid electrolytes. Herein, to improve the cycle performance of the battery, Al2O3 atomic layer deposition (ALD) coating is applied on Cr8O21 cathodes to modify the interface between the electrode and the electrolyte. X-ray photoelectron spectroscopy, scanning electron microscope, transmission electron microscope, and Fourier transform infrared spectroscopy, etc., are used to estimate the morphology of the ALD coating and the interface reaction mechanism. The electrochemical properties of the Cr8O21 cathodes are investigated. The results show that the uniform and dense Al2O3 layer not only prevents the polyethylene oxide from oxidization but also enhances the lithium-ion transport. The 12-ALD-cycle-coated electrode with approximately 4 nm Al2O3 layer displays the optimal cycling performance, which delivers a high capacity of 260 mAh g−1 for the 125th cycle at 0.1C with a discharge-specific energy of 630 Wh kg−1.

scholarly journals Atomic Layer Deposition of NiO to Produce Active Material for Thin-Film Lithium-Ion Batteries

Coatings ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 301 ◽  
Author(s):  
Yury Koshtyal ◽  
Denis Nazarov ◽  
Ilya Ezhov ◽  
Ilya Mitrofanov ◽  
Artem Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Atomic Layer Deposition ◽  
Oxygen Plasma ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Cyclic Voltammograms ◽  
X Ray ◽  
Layer Deposition

Atomic layer deposition (ALD) provides a promising route for depositing uniform thin-film electrodes for Li-ion batteries. In this work, bis(methylcyclopentadienyl) nickel(II) (Ni(MeCp)2) and bis(cyclopentadienyl) nickel(II) (NiCp2) were used as precursors for NiO ALD. Oxygen plasma was used as a counter-reactant. The films were studied by spectroscopic ellipsometry, scanning electron microscopy, atomic force microscopy, X-ray diffraction, X-ray reflectometry, and X-ray photoelectron spectroscopy. The results show that the optimal temperature for the deposition for NiCp2 was 200–300 °C, but the optimal Ni(MeCp)2 growth per ALD cycle was 0.011–0.012 nm for both precursors at 250–300 °C. The films deposited using NiCp2 and oxygen plasma at 300 °C using optimal ALD condition consisted mainly of stoichiometric polycrystalline NiO with high density (6.6 g/cm3) and low roughness (0.34 nm). However, the films contain carbon impurities. The NiO films (thickness 28–30 nm) deposited on stainless steel showed a specific capacity above 1300 mAh/g, which is significantly more than the theoretical capacity of bulk NiO (718 mAh/g) because it includes the capacity of the NiO film and the pseudo-capacity of the gel-like solid electrolyte interface film. The presence of pseudo-capacity and its increase during cycling is discussed based on a detailed analysis of cyclic voltammograms and charge–discharge curves (U(C)).

Atomic Layer Deposition of Lithium Niobium Oxides as Potential Solid-State Electrolytes for Lithium-Ion Batteries

2018 ◽  
Vol 10 (2) ◽  
pp. 1654-1661 ◽  
Author(s):  
Biqiong Wang ◽  
Yang Zhao ◽  
Mohammad Norouzi Banis ◽  
Qian Sun ◽  
Keegan R. Adair ◽  
...  
Keyword(s):  
Solid State ◽  
Atomic Layer Deposition ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Niobium Oxides ◽  
Layer Deposition ◽  
Solid State Electrolytes

Amorphous vanadium oxide coating on graphene by atomic layer deposition for stable high energy lithium ion anodes

2014 ◽  
Vol 50 (73) ◽  
pp. 10703 ◽  
Author(s):  
Xiang Sun ◽  
Changgong Zhou ◽  
Ming Xie ◽  
Tao Hu ◽  
Hongtao Sun ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Vanadium Oxide ◽  
Lithium Ion ◽  
Oxide Coating ◽  
Atomic Layer ◽  
High Energy ◽  
Layer Deposition

scholarly journals Enhanced Electrochemical Performance of Supercapacitors via Atomic Layer Deposition of ZnO on the Activated Carbon Electrode Material

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4188
Author(s):  
Chongrui Wu ◽  
Fuming Zhang ◽  
Xiangshang Xiao ◽  
Junyan Chen ◽  
Junqi Sun ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Atomic Layer Deposition ◽  
Electrode Materials ◽  
Inorganic Compounds ◽  
Atomic Layer ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Operating Voltage ◽  
Layer Deposition

Fabricating electrical double-layer capacitors (EDLCs) with high energy density for various applications has been of great interest in recent years. However, activated carbon (AC) electrodes are restricted to a lower operating voltage because they suffer from instability above a threshold potential window. Thus, they are limited in their energy storage. The deposition of inorganic compounds’ atomic layer deposition (ALD) aiming to enhance cycling performance of supercapacitors and battery electrodes can be applied to the AC electrode materials. Here, we report on the investigation of zinc oxide (ZnO) coating strategy in terms of different pulse times of precursors, ALD cycles, and deposition temperatures to ensure high electrical conductivity and capacitance retention without blocking the micropores of the AC electrode. Crystalline ZnO phase with its optimal forming condition is obtained preferably using a longer precursor pulse time. Supercapacitors comprising AC electrodes coated with 20 cycles of ALD ZnO at 70 °C and operated in TEABF4/acetonitrile organic electrolyte show a specific capacitance of 23.13 F g−1 at 5 mA cm−2 and enhanced capacitance retention at 3.2 V, which well exceeds the normal working voltage of a commercial EDLC product (2.7 V). This work delivers an additional feasible approach of using ZnO ALD modification of AC materials, enhancing and promoting stable EDLC cells under high working voltages.

scholarly journals Recent progress and future prospects of atomic layer deposition to prepare/modify solid-state electrolytes and interfaces between electrodes for next-generation lithium batteries

2021 ◽  
Author(s):  
Lu Han ◽  
Chien-Te Hsieh ◽  
Bikash Chandra Mallick ◽  
Jianlin Li ◽  
Yasser Ashraf Gandomi
Keyword(s):  
Solid State ◽  
Atomic Layer Deposition ◽  
Lithium Batteries ◽  
Room Temperature ◽  
Recent Progress ◽  
Lithium Ion ◽  
Atomic Layer ◽  
Future Prospects ◽  
Layer Deposition ◽  
Solid State Electrolytes

Comparison of ionic conductivity (at room temperature) of different solid-state electrolytes (SSEs) prepared by the atomic layer deposition (ALD) for lithium-ion batteries (LIBs).

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