All-solid-state thin-film batteries based on lithium phosphorus oxynitrides

Dai, Wangqi; Qiao, Yan; Ma, Ziqiang; Fu, Zheng‐Wen

doi:10.1088/2752-5724/ac7db2

Cited by 12 publications

(8 citation statements)

References 124 publications

(152 reference statements)

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“…The well-recovered LiPON/Li interface in the R-TFB may be attributed to the following aspects. (1) According to previous reports 30,31 , there exists a fully dense layer containing Li3PO4, Li3N, and Li2O at the surface of recycled LiPON due to the decomposition reaction between LiPON and Li, which is ionically conductive and can shield the recycled LiPON electrolyte from severe decomposition and contamination during the recycling process 32…”

Section: Resultsmentioning

confidence: 95%

Direct Recycling of All-Solid-State Thin Film Lithium Batteries with Lithium Anode Failure

Xia¹,

Yu²,

Liu³

et al. 2023

Acta Physico Chimica Sinica

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All-solid-state thin film lithium batteries (TFBs) are regarded as the ideal power source for microelectronics in the upcoming era of the Internet of Things, owing to their solid-state architecture, flexible size and shape, long cycle life, low self-discharge rate, and facile miniaturization. Even though tremendous improvements have been made in TFBs in the last decades, recycling of TFBs, which is supposed to be a serious issue in the future, is rarely studied. With continuous TFB market expansion, the sustainable development of TFBs is becoming an increasingly important research topic. To date, Li anode failure has been regarded as the most common reason for the failure of TFBs due to the following aspects of Li metal anode: strong reactivity with moisture, large volume change during cycling, and inevitable dendrite growth during Li plating. In this work, a facile recycling strategy is developed based on the most commonly used TFBs of LiCoO2 (LCO)/lithium phosphorus oxynitride (LiPON)/Li (F-TFB). Our findings indicate that the Li anode in F-TFB is partially oxidized during cycling with noticeable surface morphology change, which leads to an obvious increase in Li/LiPON interfacial resistance associated with rapid capacity loss. To directly recycle the F-TFB, we developed a simple method to remove the spent Li anode by dissolving the metallic Li metal of the F-TFB in an ethanol solution. The efficient dissolution of metallic Li allows the oxidized Li residues to be easily wiped away from the surface of the LiPON electrolyte film with the assistance of a dust-free cloth, resulting in the rapid recycling of the underlying LCO/LiPON film. Structural and surface characterization results indicate that the obtained LCO/LiPON which was part of the failed F-TFB remains in a good conditionwithout structural degradation, which enables its direct reuse in fabricating new TFBs. Consequently, a recycled LCO/LiPON/Li TFB (R-TFB) is constructed by sequentially depositing new LiPON and Li films on the used LCO/LiPON film, exhibiting a small interfacial resistance, recovered Li anode morphology and surface, and restorative electrochemical performance. Specifically, the R-TFB delivers a specific capacity of 0.223 mAhꞏcm −2 at 0.1 mAꞏcm −2 , acceptable rate performance (0.120 mAhꞏcm −2 at 0.8 mAꞏcm −2 ), and good cycle performance (77.3% capacity retention after 500 cycles), which are very close to those of a newly fabricated TFB, demonstrating the feasibility of this direct recycling approach. Such a simple yet efficient recycling approach may effectively extend the lifespan of solid-state batteries and provide important insights to develop sustainable TFBs for microelectronic devices.

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Section: Resultsmentioning

confidence: 95%

Direct Recycling of All-Solid-State Thin Film Lithium Batteries with Lithium Anode Failure

Xia¹,

Yu²,

Liu³

et al. 2023

Acta Physico Chimica Sinica

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“…The LiPON was sputtered using a Li 3 PO 4 target under N 2 atmosphere at 298 K. During the RF magnetron sputtering process, the introduced N 2 gas was split into nitrogen ions and electrons under the high electric field, resulting in a reactive nitrogen cation species. The ionized N species can react with the Li-P-O species to form LiPON 45 , 46 . As shown in the cross-section FESEM image of the solid-state battery (Fig.…”

Section: Resultsmentioning

confidence: 99%

Lattice pinning in MoO3 via coherent interface with stabilized Li+ intercalation

Sun,

Han,

Liu

et al. 2023

Nat Commun

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Large lattice expansion/contraction with Li+ intercalation/deintercalation of electrode active materials results in severe structural degradation to electrodes and can negatively impact the cycle life of solid-state lithium-based batteries. In case of the layered orthorhombic MoO3 (α-MoO3), its large lattice variation along the b axis during Li+ insertion/extraction induces irreversible phase transition and structural degradation, leading to undesirable cycle life. Herein, we propose a lattice pinning strategy to construct a coherent interface between α-MoO3 and η-Mo4O11 with epitaxial intergrowth structure. Owing to the minimal lattice change of η-Mo4O11 during Li+ insertion/extraction, η-Mo4O11 domains serve as pin centers that can effectively suppress the lattice expansion of α-MoO3, evidenced by the noticeably decreased lattice expansion from about 16% to 2% along the b direction. The designed α-MoO3/η-Mo4O11 intergrown heterostructure enables robust structural stability during cycling (about 81% capacity retention after 3000 cycles at a specific current of 2 A g−1 and 298 ± 2 K) by harnessing the merits of epitaxial stabilization and the pinning effect. Finally, benefiting from the stable positive electrode–solid electrolyte interface, a highly durable and flexible all-solid-state thin-film lithium microbattery is further demonstrated. This work advances the fundamental understanding of the unstable structure evolution for α-MoO3, and may offer a rational strategy to develop highly stable electrode materials for advanced batteries.

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“…Table 6 summaries the selected data for solid-state batteries presented in the literature [ 38 , 39 , 40 , 41 , 42 ] which contain electrolytes of nanocomposites or similar materials and the results of this work for quick reference.…”

Section: Resultsmentioning

confidence: 99%

“…Review [ 40 ] describes the lithium phosphorus oxygen nitrogen (LiPON) as solid electrolyte with poor interface with the electrode. There are many preparation methods of the best LiPON.…”

Section: Resultsmentioning

confidence: 99%

Nanocomposite Polymer Gel Electrolyte Based on TiO2 Nanoparticles for Lithium Batteries

Slesarenko,

Chernyak,

Khatmullina

et al. 2023

Membranes

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In this article, the specific features of competitive ionic and molecular transport in nanocomposite systems based on network membranes synthesized by radical polymerization of polyethylene glycol diacrylate in the presence of LiBF4, 1-ethyl-3-methylimidazolium tetrafluoroborate, ethylene carbonate (EC), and TiO2 nanopowder (d~21 nm) were studied for 1H, 7Li, 11B, 13C, and 19F nuclei using NMR. The membranes obtained were studied through electrochemical impedance, IR-Fourier spectroscopy, DSC, and TGA. The ionic conductivity of the membranes was up to 4.8 m Scm−1 at room temperature. The operating temperature range was from −40 to 100 °C. Two types of molecular and ionic transport (fast and slow) have been detected by pulsed field gradient NMR. From quantum chemical modeling, it follows that the difficulty of lithium transport is due to the strong chemisorption of BF4– anions with counterions on the surface of TiO2 nanoparticles. The theoretical conclusion about the need to increase the proportion of EC in order to reduce the influence of this effect was confirmed by an experimental study of a system with 4 moles of EC. It has been shown that this approach leads to an increase in lithium conductivity in an ionic liquid medium, which is important for the development of thermostable nanocomposite electrolytes for Li//LiFePO4 batteries with a base of lithium salts and aprotonic imidasolium ionic liquid.

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All-solid-state thin-film batteries based on lithium phosphorus oxynitrides

Cited by 12 publications

References 124 publications

Direct Recycling of All-Solid-State Thin Film Lithium Batteries with Lithium Anode Failure

Direct Recycling of All-Solid-State Thin Film Lithium Batteries with Lithium Anode Failure

Lattice pinning in MoO3 via coherent interface with stabilized Li+ intercalation

Nanocomposite Polymer Gel Electrolyte Based on TiO2 Nanoparticles for Lithium Batteries

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