New P2-Type Honeycomb-Layered Sodium-Ion Conductor: Na2Mg2TeO6

Li, Yuyu; Deng, Zhi; Peng, Jian; Gu, Jintao; Chen, Enyi; Yu, Yao; Wu, Jian‐Fang; Li, Xiang; Luo, Jiahuan; Huang, Yangyang; Xu, Yue; Gao, Zhonghui; Fang, Chun; Zhu, Jinlong; Li, Qing

doi:10.1021/acsami.8b03938

Cited by 53 publications

(58 citation statements)

References 39 publications

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“…However, K + has a vastly larger ionic radius with a correspondingly larger inter-layer distance and hence forms weaker inter-layer bonds. Generally, A + cations with larger ionic radii such as K + and Na + form weaker inter-layer bonds in the aforementioned compositions resulting in layered oxides with prismatic or octahedral coordination of alkali metal and oxygen (technically referred to as P-type or O-type layered structures, respectively) 1, [3][4][5][6][7][8][9][10][11][12][13][14][15][16]19,20,27,[34][35][36] . The weaker inter-layer bonds in prismatic layered (P-type) structures create more open voids within the transition metal layers allowing for facile two-dimensional diffusion of alkali atoms within the slabs 41 .…”

Section: An Idealised Approach Of Geometry and Topology To The Diffusmentioning

confidence: 99%

“…compositions, where A = K, Li or Na is an alkali cation (potassium, lithium or sodium) owing to their exemplary electrochemical and physical properties 1,[5][6][7][8][11][12][13][14][15][16]19,20,28,39 . We explore their cationic diffusion by envisioning an idealised model of multi-layered oxides in an attempt to gain an effective description of the diffusion mechanics along the honeycomb layers using concepts of 2D curvature and topology.…”

Section: An Idealised Approach Of Geometry and Topology To The Diffusmentioning

confidence: 99%

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An idealised approach of geometry and topology to the diffusion of cations in honeycomb layered oxide frameworks

Kanyolo

Masese

2020

Sci Rep

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Honeycomb layered oxides are a novel class of nanostructured materials comprising alkali or coinage metal atoms intercalated into transition metal slabs. The intricate honeycomb architecture and layered framework endows this family of oxides with a tessellation of features such as exquisite electrochemistry, unique topology and fascinating electromagnetic phenomena. Despite having innumerable functionalities, these materials remain highly underutilised as their underlying atomistic mechanisms are vastly unexplored. Therefore, in a bid to provide a more in-depth perspective, we propose an idealised diffusion model of the charged alkali cations (such as lithium, sodium or potassium) in the two-dimensional (2D) honeycomb layers within the multi-layered crystal of honeycomb layered oxide frameworks. This model not only explains the correlation between the excitation of cationic vacancies (by applied electromagnetic fields) and the Gaussian curvature deformation of the 2D surface, but also takes into consideration, the quantum properties of the cations and their inter-layer mixing through quantum tunnelling. Through this work, we offer a novel theoretical framework for the study of multi-layered materials with 2D cationic diffusion currents, as well as providing pedagogical insights into the role of topological phase transitions in these materials in relation to Brownian motion and quantum geometry.

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Section: An Idealised Approach Of Geometry and Topology To The Diffusmentioning

confidence: 99%

Section: An Idealised Approach Of Geometry and Topology To The Diffusmentioning

confidence: 99%

An idealised approach of geometry and topology to the diffusion of cations in honeycomb layered oxide frameworks

Kanyolo

Masese

2020

Sci Rep

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“…Compared with the liquid batteries, the interfacial characterization in ASSBs is more difficult and complicated. [ 45–47 ] The major challenges are small exposed area in ASSBs of interface for characterization and vulnerability of interface in ASSBs extracted for characterization. [ 48 ] Hence, many conventional characterization techniques utilized for the interface of liquid electrolytes, such as infrared spectroscopy (IR), are unsuitable for characterizing the interface in ASSBs.…”

Section: Characterization Techniques For Interface In All‐solid‐statementioning

confidence: 99%

Advanced Characterization Techniques for Interface in All‐Solid‐State Batteries

Gao

et al. 2020

Small Methods

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The interface is a critical factor of electrochemical performance for all‐solid‐state batteries (ASSBs). Comprehending the composition, structure, morphology, and their evolution in the interface during charge/discharge cycling is greatly important for the development and practical application of ASSBs. The characterization techniques are very crucial and powerful for investigating the interface properties of ASSBs. This review briefly describes how the interface is generated in ASSBs, and then emphatically summarizes some important advanced techniques used to characterize the interface in ASSBs. The principle, advantage, and application of the techniques in the interface investigation are systematically discussed. This review provides fundamental insights and perspectives for developing the characterization techniques to deeply understand the interfacial behaviors of ASSBs, which is valuable for accelerating the commercialization of ASSBs used in electronic devices, electric vehicles, and large‐scale energy storage.

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“…[67,89] In recent years, great efforts have been devoted to solid-state electrolytes for sodium battery, and the most investigated electrolytes are inorganic electrolytes and polymer-based organic electrolytes, which possess high ionic conductivities, high safety (e. g., non-leakage and nonflammability), suppression of sodium dendrite formation, and reduced electrolyte decomposition (Figure 10). [82,90,93,94]…”

Section: Statusmentioning

confidence: 99%

“…Structures and classification of solid-state sodium electrolytes. [82,90,93,94] /Na interface, [96] Copyright 2018, Chem. (b) Na 3 Zr 2 Si 2 PO 12 /Na 2 MnFe 2 (CN) 6 cathode, [96] Copyright 2018, Chem.…”

Section: Advances In Sciences and Technology To Meet Challengesmentioning

confidence: 99%

Electrolytes for Lithium‐ and Sodium‐Metal Batteries

Yang

Wang

et al. 2020

Chemistry An Asian Journal

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High‐energy‐density batteries have attracted significant attention due to the huge demand in electric transportation in future. Metal‐based batteries, especially lithium metal batteries (LMBs) and sodium metal batteries (SMBs), have been hot research topics nowadays. The uncontrolled growth of metal dendrites has retarded the development of LMBs and SMBs. Various electrolytes have been explored to meet the demand of high‐performance metal‐based batteries, such as additives‐contained electrolytes, polymer electrolytes, and solid‐state electrolytes. To guide the development of electrolytes in LMBs and SMBs, we organize this roadmap to give out the status of present research and future challenges in this field. We also hope that the readers can get the knowledge and ideas from this roadmap.

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New P2-Type Honeycomb-Layered Sodium-Ion Conductor: Na₂Mg₂TeO₆

Cited by 53 publications

References 39 publications

An idealised approach of geometry and topology to the diffusion of cations in honeycomb layered oxide frameworks

An idealised approach of geometry and topology to the diffusion of cations in honeycomb layered oxide frameworks

Advanced Characterization Techniques for Interface in All‐Solid‐State Batteries

Electrolytes for Lithium‐ and Sodium‐Metal Batteries

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