Properties and preparation of Li–La–Ti–Zr–O thin film electrolyte

Nong, Jian; Xu, Huarui; Yu, Zhaozhe; Zhu, Guisheng; Yu, Aibing

doi:10.1016/j.matlet.2015.04.088

Cited by 31 publications

(17 citation statements)

References 15 publications

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“…However, the careful selection of solid electrolyte materials and their integration to full solid state microbattery designs are still to be made giving perspective for fast Li diffusion and highest energy density for safe energy storage. -based thin film in-plane conductivity [45][46][47][48][49][50][51][52][53][54][55][56] , compared to the bulk conductivity measured on a home-made cubic-garnet Li 6.19 Al 0.28 La 3 Zr 1.75 Ta 0.25 O 12 pellet.…”

Section: Opportunities For Microbattery Designs: All-solid State Ceramentioning

confidence: 99%

“…Despite the knowledge gained on LLZO pellet fabrication and synergy of lattice structure evolution and Li-transfer, the transferability of LLZO to thin film structures remains challenging. Only a few attempts to produce garnet-based thin films have been reported, which we review in Table 1: These are mainly LLZO garnet-type structures being undoped or doped with Al, Y or Ta and deposited by either sol-gel [45][46][47] , sputtering [48][49][50] , metal-organic or CO 2 -laser assisted chemical vapor deposition (MO-CVD, LA-CVD) [51,52] or pulsed laser deposition (PLD) [53][54][55][56] . Figure 1b summarizes their Arrhenius-type conductivity characteristics.…”

Section: Li-garnet Solid State Electrolyte Materials: Perspectives Fomentioning

confidence: 99%

“…Finally, one really important point in the analysis is that the as-deposited amorphous LLZO films, reported by Kalita et al [48] , Nong et al [49] or Park et al [55] , show conductivities comparable in their values around 10 -7 -10 -6 Scm -1 to those measured on films with cubic garnet phase by Kim et al [53] (10 -6 Scm -1 ) or Tan et al [54] (10 -7 Scm -1 ). It remains unclear how Li-conductive networks form in dense thin films of LLZO, when crystallizing from amorphous glass-type structures to crystalline tetragonal or cubic garnet structures.…”

Section: Table 1 and Figure 1bmentioning

confidence: 99%

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Glass‐Type Polyamorphism in Li‐Garnet Thin Film Solid State Battery Conductors

Garbayo

Struzik

Bowman

et al. 2018

Advanced Energy Materials

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Ceramic Li7La3Zr2O12 garnet materials are promising candidates for the electrolytes in solid state batteries due to their high conductivity and structural stability. In this paper, the existence of “polyamorphism” leading to various glass‐type phases for Li‐garnet structure besides the known crystalline ceramic ones is demonstrated. A maximum in Li‐conductivity exists depending on a frozen thermodynamic glass state, as exemplified for thin film processing, for which the local near range order and bonding unit arrangement differ. Through processing temperature change, the crystallization and evolution through various amorphous and biphasic amorphous/crystalline phase states can be followed for constant Li‐total concentration up to fully crystalline nanostructures. These findings reveal that glass‐type thin film Li‐garnet conductors exist for which polyamorphism can be used to tune the Li‐conductivity being potential new solid state electrolyte phases to avoid Li‐dendrite formation (no grain boundaries) for future microbatteries and large‐scale solid state batteries.

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Section: Opportunities For Microbattery Designs: All-solid State Ceramentioning

confidence: 99%

Section: Li-garnet Solid State Electrolyte Materials: Perspectives Fomentioning

confidence: 99%

Section: Table 1 and Figure 1bmentioning

confidence: 99%

See 1 more Smart Citation

Glass‐Type Polyamorphism in Li‐Garnet Thin Film Solid State Battery Conductors

Garbayo

Struzik

Bowman

et al. 2018

Advanced Energy Materials

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“…With all production techniques, films can be fabricated with an activation energy of 0.3-0.4 eV. Comparison of conductivity and activation energy of samples obtained by different production methods (solid state, [7,70, tape casting, [15][16][17][18][19]21,[23][24][25][26] sol-gel, [93,[121][122][123][124][125][126][127][128][129][130][131][132][133][134] PLD, [30,31,[33][34][35][36]38,44] RF sputtering, [39,40,[43][44][45]135] ALD, [46] chemical vapor deposition (CVD), [28,29] and PAD [62,73,136] ) for the (doped) LLZO solid electrolyte depending on the production resp. annealing temperature.…”

Section: Comparison With Other Production Methodsmentioning

confidence: 99%

“…Furthermore, an exact temperature control is necessary to achieve thin planar ceramic plates without deformation. [25][26][27] Alternative fabrication methods like metal organic chemical vapor deposition (MO-CVD), [28,29] pulsed laser deposition (PLD), [17,[30][31][32][33][34][35][36][37][38] radio frequency (RF) sputtering, [39][40][41][42][43][44][45] and atomic layer deposition (ALD) [46] have been investigated to produce films in a nanometer scale. However, all these coating techniques…”

mentioning

confidence: 99%

Powder Aerosol Deposition as a Method to Produce Garnet‐Type Solid Ceramic Electrolytes: A Study on Electrochemical Film Properties and Industrial Applications

et al. 2021

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Lithium metal batteries with solid-state electrolytes (SSEs) are promising as electrochemical storage devices for future stationary or mobile applications due to their potentially high specific energy density and increased safety compared with lithium-ion batteries with a liquid electrolyte. [1,2] Different types of polymer and ceramic solid electrolytes have recently been investigated regarding their chemical and electrochemical stability as well as their temperature-dependent ionic conductivity and processability. [3,4] One of the most promising ceramic electrolytes to meet all these requirements is Li 7 La 3 Zr 2 O 12 (LLZO) in the cubic garnet crystal structure. It shows a high thermodynamic and kinetic electrochemical stability to lithium metal electrodes, [5,6] combined with a high ionic transfer number close to 1 and a high ionic conductivity of up to 10 À3 S cm À1 at room temperature that makes it favorable over other electrolytes. [6] Usually, the cubic phase is stabilized by doping with Al 3þ or/and Ta 5þ . This also increases the conductivity and reduces the necessary sintering temperatures, yet also leads to a wide variety in reported compositions of Al y Li 7À3yÀz La 3 Zr 2Àz Ta z O 12 . [7,8] Although the production of sintered bulk samples produced by solid-state reaction with a high electrolyte thickness of several hundred micrometers allows remarkable current densities of up to 6 mA cm À2 at 60 C with high solid electrolyte conductivities of up to 10 À3 S cm À1 at room temperature, a commercial industrial large-scale production with high throughput rates in combination with moisture-free processing is challenging. [9][10][11] Ideally, the thickness of the electrolyte should be in the range of 5-20 μm to reduce the risk of short circuits on the one hand but, on the other hand, provide a low electrolyte mass for high cell energy densities. [12] Although much research has been conducted, the thickness range for LLZO films significantly below 50 μm could only rarely been realized yet due to the nonavailability of suitable ceramic production technologies. [13] Sintering of tape-casted ceramic electrolytes is an often reported method to produce tapes below 0.5 mm. [14][15][16][17][18][19][20][21][22][23][24] However, high sintering temperatures >1000 C in combination with dwell times of several hours lead to high investment and operating costs. Furthermore, an exact temperature control is necessary to achieve thin planar ceramic plates without deformation. [25][26][27] Alternative fabrication methods like metal organic chemical vapor deposition (MO-CVD), [28,29] pulsed laser deposition (PLD), [17,[30][31][32][33][34][35][36][37][38] radio frequency (RF) sputtering, [39][40][41][42][43][44][45] and atomic layer deposition (ALD) [46] have been investigated to produce films in a nanometer scale. However, all these coating techniques

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All‐Solid‐State Thin Film Lithium/Lithium‐Ion Microbatteries for Powering the Internet of Things

Xia

et al. 2022

Advanced Materials

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As the world steps into the era of Internet of Things (IoT), numerous miniaturized electronic devices requiring autonomous micropower sources will be connected to the internet. All‐solid‐state thin‐film lithium/lithium‐ion microbatteries (TFBs) combining solid‐state battery architecture and thin‐film manufacturing are regarded as ideal on‐chip power sources for IoT‐enabled microelectronic devices. However, unlike commercialized lithium‐ion batteries, TFBs are still in the immature state, and new advances in materials, manufacturing, and structure are required to improve their performance. In this review, the current status and existing challenges of TFBs for practical application in internet‐connected devices for the IoT are discussed. Recent progress in thin‐film deposition, electrode and electrolyte materials, interface modification, and 3D architecture design is comprehensively summarized and discussed, with emphasis on state‐of‐the‐art strategies to improve the areal capacity and cycling stability of TFBs. Moreover, to be suitable power sources for IoT devices, the design of next‐generation TFBs should consider multiple functionalities, including wide working temperature range, good flexibility, high transparency, and integration with energy‐harvesting systems. Perspectives on designing practically accessible TFBs are provided, which may guide the future development of reliable power sources for IoT devices.

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Properties and preparation of Li–La–Ti–Zr–O thin film electrolyte

Cited by 31 publications

References 15 publications

Glass‐Type Polyamorphism in Li‐Garnet Thin Film Solid State Battery Conductors

Glass‐Type Polyamorphism in Li‐Garnet Thin Film Solid State Battery Conductors

Powder Aerosol Deposition as a Method to Produce Garnet‐Type Solid Ceramic Electrolytes: A Study on Electrochemical Film Properties and Industrial Applications

All‐Solid‐State Thin Film Lithium/Lithium‐Ion Microbatteries for Powering the Internet of Things

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