Ca-doped Na2Zn2TeO6 layered sodium conductor for all-solid-state sodium-ion batteries

Deng, Zhi; Gu, Jintao; Li, Yuyu; Li, Shuai; Peng, Jian; Li, Xiang; Luo, Jiahuan; Huang, Yangyang; Fang, Chun; Li, Qing; Zhao, Yusheng

doi:10.1016/j.electacta.2018.12.092

Cited by 52 publications

(64 citation statements)

References 32 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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“…a) Electrochemical properties of SE corresponding to the ion doping and substitution, [ 47–64,104,105 ] b) The relative Na‐ions site energies in undoped Na 3 PS 4 and doped Na 3+ x M x P 1− x S 4 (M = Si, Ge, Ti, Sn; x = 0.0625). Reproduced with permission.…”

Section: Modification Methods Of Sementioning

confidence: 99%

“…Deng proposed SEs of Ga‐substituted Na 2− x Zn 2− x Ga x TeO 6 (NZTO‐G x , x = 0, 0.05, 0.1, 0.15, respectively, that is, NZTO, NZTO‐G0.05, NZTO‐G0.1, NZTO‐G0.15) by a conventional solid‐state reaction in 2017. [ 62 ] Compared with NZTO and NZTO‐G0.15, the RT ion conductivity of NZTO‐G0.1 is highest (1.1 × 10 −3 S cm −1 ), which is probably related to the decrease in interlayer Na + ions, and tallies with the Sb‐substituted Na 3− x Sn 2− x Sb x NaO 6 . [ 63 ]…”

Section: Modification Methods Of Sementioning

confidence: 99%

“…Considering the good ductility and plasticity of solid polymer electrolyte (SPE), the combination of organic and Figure 2. a) Electrochemical properties of SE corresponding to the ion doping and substitution, [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64]104,105] b) The relative Na-ions site energies in undoped Na 3 PS 4 and doped Na 3þx M x P 1Àx S 4 (M ¼ Si, Ge, Ti, Sn; x ¼ 0.0625). Reproduced with permission.…”

Section: Composite Methodsmentioning

confidence: 99%

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A Review of Modification Methods of Solid Electrolytes for All‐Solid‐State Sodium‐Ion Batteries

Dai

Chen

et al. 2020

Energy Tech

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All-solid-state sodium-ion battery (ASSIB) is a promising new energy storage device due to the excellent thermal stability, low flammability, high impermeability and nonvolatility, as well as riskless fire and explosion properties. The solid electrolyte plays a core role in the ASSIBs to determine their electrochemical performance. Herein, close attention is paid to effective approaches to improve the performance of solid electrolytes, including ion doping and substitution, composite method, coating method, crystal transformation method, ceramization and vitrification, etc. In particular, electrochemical window, ionic conductivity, electrochemical stability, and structural stability are also reviewed. The future development of solid electrolytes and the possible directions for improving the properties of the ASSIBs in practical applications are also prospects. This review will guide the development of solid electrolytes for the ASSIBs in future.

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Prussian Blue Analogues for Sodium‐Ion Batteries: Past, Present, and Future

et al. 2022

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photocopying process took nearly a century from 1843 until the early 1940s, while the detailed crystal structure of PB was first confirmed as cubic by Ludi and co-workers in 1977, which is now widely accepted. [6] Remarkably, the past four decades have witnessed the exploration of PB in more and more new and totally different, but very promising application areas, reaching from rechargeable batteries [7] to catalysis [8] and biosensors, [9] from optically switchable films in electrochromic devices (smart windows) [10] to a helpful nanomaterial for cancer therapy. [11] Due to their excellent redox activity, low cost, and highly reversible phase transitions during the insertion/extraction process of certain cations, PB and PBAs have also been widely investigated as promising active materials for energy storage devices, especially for commercial sodium-ion batteries (SIBs) beyond other batteries system (potassium-ion batteries, [12,13] lithium-ion batteries (LIBs), [14] lithium-sulfur batteries (LI-S), [15] lithium-air batteries, [16] zinc-air batteries, [17] solid-state batteries, [18] etc.) in large-scale stationary energy storage systems in the near future. [19,20] The chemical formulas of PBAs could be represented asHere, A represents a single alkali metal or alkaline earth metal, or a mixture of these metals, while M 1 and M 2 typically are transition metals bonded by CN − bonds to form a 3D open structure with the capability to host element(s) A inside the crystal structure. □ represents the vacancy that is caused by the loss of an M 2 (CN) 6 group and the occupation by coordination water and interstitial water, the species and ionic radii of which are shown in Figure 2a. [21] With the different species and various ratios of A/M 1 /M 2 , the number of family members could reach more than 100, sharing different crystal phases, including monoclinic, [22,23] rhombohedral, [24,25] cubic, [26,27] tetragonal, [28] hexagonal, [29] etc. According to the amount of redox-active sites for battery application, PB and PBAs could be divided into dual-electron transfer type (DE-PBAs: M 1 and M 2 = Mn, Fe, Co) and single-electron transfer type (SE-PBAs: M 1 = Zn, Ni and M 2 = Fe, Co, Mn) with theoretical specific capacity of 170 and 85 mAh g −1 , respectively. [21] Taking the high average voltage and capacity of the DE-PBAs into consideration, they are promising and competitive, even to the level of LiFePO 4 (a well-known cathode material for the LIBs), for high energy density devices (≈450 Wh kg −1 on the material level). On the other hand, the negligible structural distortion and high conductivity of SE-PBAs make them desirable choices for fast-charging and long-life devices. [20,30] Prussian blue analogues (PBAs) have attracted wide attention for their application in the energy storage and conversion field due to their low cost, facile synthesis, and appreciable electrochemical performance. At the present stage, most research on PBAs is focused on their material-level optimization, whereas their properties in practical b...

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Ca-doped Na2Zn2TeO6 layered sodium conductor for all-solid-state sodium-ion batteries

Cited by 52 publications

References 32 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

A Review of Modification Methods of Solid Electrolytes for All‐Solid‐State Sodium‐Ion Batteries

Prussian Blue Analogues for Sodium‐Ion Batteries: Past, Present, and Future

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