Diffusion control of an ion by another in LiNbO3 and LiTaO3 crystals

Zhang, De‐Long; Zhang, Qun; Qiu, Cong-Xian; Wong, Wing‐Han; Yu, Dao-Yin; Pun, Edwin Yue-Bun

doi:10.1038/srep10018

Cited by 8 publications

(2 citation statements)

References 23 publications

(26 reference statements)

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“…For completeness, it should be mentioned, that also other elements, Sc [279] and Zr [280], which are candidates for waveguide formation were studied with regard to their diffusion properties using SIMS. Further, several studies focused on the co-diffusion of two elements: Zn/Ni [281], Zr/Ti [282,283], Sc/Ti [283] as well as for waveguide laser applications, the important Er/Ti [283,284].…”

Section: Indiffusionmentioning

confidence: 99%

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

Kling

Marques

2021

Crystals

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X-ray and neutron diffraction studies succeeded in the 1960s to determine the principal structural properties of congruent lithium niobate. However, the nature of the intrinsic defects related to the non-stoichiometry of this material remained an object of controversial discussion. In addition, the incorporation mechanism for dopants in the crystal lattice, showing a solubility range from about 0.1 mol% for rare earths to 9 mol% for some elements (e.g., Ti and Mg), stayed unresolved. Various different models for the formation of these defect structures were developed and required experimental verification. In this paper, we review the outstanding role of nuclear physics based methods in the process of unveiling the kind of intrinsic defects formed in congruent lithium niobate and the rules governing the incorporation of dopants. Complementary results in the isostructural compound lithium tantalate are reviewed for the case of the ferroelectric-paraelectric phase transition. We focus especially on the use of ion beam analysis under channeling conditions for the direct determination of dopant lattice sites and intrinsic defects and on Perturbed Angular Correlation measurements probing the local environment of dopants in the host lattice yielding independent and complementary information.

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Section: Indiffusionmentioning

confidence: 99%

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

Kling

Marques

2021

Crystals

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Section: Indiffusionmentioning

confidence: 99%

New Trends in Lithium Niobate

2022

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Cover image courtesy of Lászl ó Kovács © 2022 by the authors. Articles in this book are Open Access and distributed under the Creative Commons Attribution (CC BY) license, which allows users to download, copy and build upon published articles, as long as the author and publisher are properly credited, which ensures maximum dissemination and a wider impact of our publications.The book as a whole is distributed by MDPI under the terms and conditions of the Creative Commons license CC BY-NC-ND.

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Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

et al. 2019

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HEVs (PHEVs), besides the traditional applications in portable devices. To build the next generation LIBs with higher performances, high energy density materials are urgently pursued worldwide. [1][2][3] Lithium-rich (Li-rich) materials, with the specific capacity over 260 mAh g −1 and energy density up to ≈1000 Wh kg −1 , [4] have attracted great interest in the past decades. It is reported that Li-rich materials are composed of two phases of Li 2 MnO 3 (C 2/m ) and LiMO 2 (R m 3 ) (M = Ni, Co, Mn, etc.). [5][6][7][8][9] Despite the above advantages, several concerns including structural instability and the resulted voltage degradation, as well as the poor diffusion kinetics at the interface have become the bottlenecks of Li-rich materials. [9][10][11][12][13] In this regard, multifarious modification approaches, such as doping and surface coating, have been intensively investigated. [14][15][16] Particularly, Li + diffusion at the cathode-electrolyte interphase (CEI) is widely regarded as the rate determining step in LIBs. [17][18][19] From this viewpoint, metal fluorides (FeF 3 , [20] MOF, [21,22] AlF 3 , [23,24] etc.), metal oxides (MgO, [25] Al 2 O 3 , [26,27] etc.), metal phosphates (AlPO 4 , [28] LaPO 4 , [29] Li 3 PO 4 , [30] FePO 4 /Li 3 PO 4 , [31] Li-Mn-PO 4 , [32] etc.), and those with similar structure of Li-rich Li 2 MnO 3 (Li 2 SiO 3 [33,34] and Li 2 SnO 3 , [35] ) have been widely applied to modify the surface of bulk Li-rich materials. Recently, fast lithium-ion conductors (LiVO 3 , [36] Li 2 ZrO 3 , [37] Li-La-Ti-O, [38,39] LiPON, [40] etc.) have also been proposed to decorate the surface of Li-rich cathodes to enhance the apparent diffusion coefficients. All the aforesaid surface modification materials, unexceptionally, have been proved to be effective in both stabilizing the structure and facilitating the Li + kinetics. Nevertheless, in general, the decoration layers themselves seem rather "passive" in promoting Li + diffusion. Assuming they are Li + conductive (e.g., solid electrolyte materials), fast Li + diffusion channels will be provided besides the general separation effect (in suppressing side reactions and inevitable TM dissolution). As for Li + insulators (e.g., metal fluorides), only the benefit of physical barriers could be exploited. Therefore, a more "initiative" function interface is imperative to be built to more effectively promote the Li + transport at the electrode-electrolyte interphase.It is noteworthy that piezoelectric material, as an important category in the energy-conversion community, works on the As one of the most promising cathodes for next-generation lithium ion batteries (LIBs), Li-rich materials have been extensively investigated for their high energy densities. However, the practical application of Li-rich cathodes is extremely retarded by the sluggish electrode-electrolyte interface kinetics and structure instability. In this context, piezoelectric LiTaO 3 is employed to functionalize the surface of Li 1.2 Ni 0.17 Mn 0.56 Co 0.07 O 2 (LNMCO), aiming to boost t...

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Diffusion control of an ion by another in LiNbO3 and LiTaO3 crystals

Cited by 8 publications

References 23 publications

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

New Trends in Lithium Niobate

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

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Diffusion control of an ion by another in LiNbO3 and LiTaO3 crystals

Cited by 8 publications

References 23 publications

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

Unveiling the Defect Structure of Lithium Niobate with Nuclear Methods

New Trends in Lithium Niobate

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO3 Modified Li‐Rich Cathode–Electrolyte Interphase

Contact Info

Product

Resources

About

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase