Honeycomb-layer structured Na3Ni2BiO6 as a high voltage and long life cathode material for sodium-ion batteries

Bhange, Deu S.; Ali, Ghulam; Kim, Dong-Hyun; Anang, Daniel Adjah; Shin, Tae Joo; Kim, Min; Kang, Yong‐Mook; Chung, Kyung Yoon; Nam, Kyung‐Wan

doi:10.1039/c6ta08661f

Cited by 77 publications

(73 citation statements)

References 34 publications

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“…Similarly, the occupancy of potassium atoms with respect to the position of oxygen atoms can be ascertained from the ABF-STEM images. By locating the position of oxygen atoms along [1][2][3][4][5][6][7][8][9][10] zone axis, the salient atomic structural differences between P2-and P3-type frameworks can be distinguished. The oxygen atoms are arranged diagonally in a zig-zag orientation along the c-axis in the P2-type framework (see Fig.…”

Section: Typical P2-type Stacking Of Atomsmentioning

confidence: 99%

“…As such, selected area electron diffraction (SAED) measurements were duly performed, exhibiting patterns of a crystallite with P2-stacking sequence along the [1][2][3][4][5][6][7][8][9][10]…”

Section: Typical P2-type Stacking Of Atomsmentioning

confidence: 99%

“…2d, shows K atoms (Z = 19) positioned between the NiO6 and TeO6 slabs in a sandwich-like arrangement. HAADF-and ABF-STEM images taken along the[1][2][3][4][5][6][7][8][9][10] zone axis(Figs. 2f and 2g)further affirm the arrangement of K atoms, seen to be occupying crystallographically distinct sites with varying occupancies (seeSupplementary Table 1), as can also be identified by the differing contrasts of K atoms shown inFig.…”

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confidence: 99%

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Evidence of Unique Stacking and Related Topological Defects in the Honeycomb Layered Oxide: K2Ni2TeO6

Masese

Miyazaki²,

Kanyolo³

et al. 2020

Preprint

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<div>Endowed with a multitude of exquisite properties such as rich electrochemistry, superb topology and eccentric electromagnetic phenomena, honeycomb layered oxides have risen to the top echelons of science with applications in diverse fields ranging from condensed matter physics, solid-state chemistry, materials science, solid-state ionics to electrochemistry. Although these features are known to stem from the utilitarian structure innate in these oxides, their functionalities are vastly underutilised as their underlying atomistic mechanisms remain unknown. Therefore in this study, atomic resolution imaging on pristine K2Ni2TeO6 along multiple zone axes were conducted using spherical aberration-corrected scanning transmission electron microscopy (Cs-corrected STEM) to reveal hitherto unreported topological defects and curvature which can be associated with various phase transitions. Furthermore we discover, for the first time, the occurrence of a new stacking variant with P3-type sequence alongside the well-reported P2-type stacking domains. Through this work, we provide insights into the connection between these unique structural disorders to the electrochemical properties of honeycomb layered oxides. The mechanism of the phase transitions reported herein is bound to become apparent upon high alkali-ion mobility, providing invaluable clues to potentially improve their functional performance in, for instance, energy storage applications. Our findings have the potential to inspire further experimental and theoretical studies into the role of stacking and topology in honeycomb layered oxides.</div>

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Section: Typical P2-type Stacking Of Atomsmentioning

confidence: 99%

Section: Typical P2-type Stacking Of Atomsmentioning

confidence: 99%

mentioning

confidence: 99%

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Evidence of Unique Stacking and Related Topological Defects in the Honeycomb Layered Oxide: K2Ni2TeO6

Masese

Miyazaki²,

Kanyolo³

et al. 2020

Preprint

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“…Sodium based materials [4][5][6][7][8] including NaMO2 (M=Fe, Mn, Co, V, Cr, Ti and Ni) [9][10][11][12][13][14][15], NaFePO4 [9], Na3Ni2BiO6 [16] and Na2CoSiO4 [17] have been considered as promising electrode materials for SIBs. The development of novel materials is required to provide better electrochemical performance and capacity than that of existing materials with the aim of applying those materials in high energy storage systems such as electrical vehicles.…”

Section: Introductionmentioning

confidence: 99%

Na3V(PO4)2 cathode material for Na ion batteries: Defects, dopants and Na diffusion

Kuganathan

Chroneos

2019

Solid State Ionics

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Layered Na3V(PO4)2 has been recently identified as a high rate cathode material for Na ion batteries. We use atomistic simulation based on the classical pair potentials to calculate the most favourable intrinsic defect process, Na migration paths and tetravalent dopant incorporation at V and P sites. The Na-V anti-site defect is the most energetically favourable defect process. The Na Frenkel is the second most favourable intrinsic defect but only higher by 0.19 eV than the anti-site. Two dimensional long range Na ion migration with activation energy of 0.59 eV is observed along the ab plane implying that Na3V(PO4)2 could be a promising cathode material for Na ion batteries. The formation of both Na vacancy and interstitial defects can be simultaneously achieved by substituting Ge on the V site and the P site required for vacancy migration and storage capacity respectively. High exoergic solution energy is calculated for La on the V site suggesting that the formation of Na3(VxLa1-x)(PO4)2 composition should be experimentally possible.

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“…Materials such as layered oxides [12,13], fluorides [14,15], phosphates [16,17], sulfates [18,19], and Prussian blue [20,21] have been extensively investigated as positive electrode of NIBs. Despite extensive research concerning cathode electrodes, development of a low-cost, high-performance and eco-friendly anode material for sodium-ion batteries remains the largest obstacle to overcome.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen/sulfur co-doped hollow carbon nanofiber anode obtained from polypyrrole with enhanced electrochemical performance for Na-ion batteries

et al. 2018

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Honeycomb-layer structured Na₃Ni₂BiO₆ as a high voltage and long life cathode material for sodium-ion batteries

Abstract: Layer structured Na3Ni2BiO6 with honeycomb ordering is explored as a new high voltage and long life cathode material for sodium-ion batteries.

Cited by 77 publications

References 34 publications

Evidence of Unique Stacking and Related Topological Defects in the Honeycomb Layered Oxide: K2Ni2TeO6

Evidence of Unique Stacking and Related Topological Defects in the Honeycomb Layered Oxide: K2Ni2TeO6

Na3V(PO4)2 cathode material for Na ion batteries: Defects, dopants and Na diffusion

Nitrogen/sulfur co-doped hollow carbon nanofiber anode obtained from polypyrrole with enhanced electrochemical performance for Na-ion batteries

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