Electrochemical Na-Deintercalation from NaVO2

Didier, Christophe; Guignard, Marie; Denage, C.; Szajwaj, Olivier; Ito, Seiya; Saadoune, Ismae͏̈l; Darriet, Jacques; Delmas, Claude

doi:10.1149/1.3555102

Cited by 225 publications

(194 citation statements)

References 27 publications

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“…The LiMO 2 layered oxides are O3-type structures, where the oxygen planes have an ABCABC stacking sequence, while the Na equivalents typically exist in several polytypes (e.g., Na x CoO 2 exists in three polytypes, O3, P2 and P3, depending on the amount of Na intercalated). 16,19,21,[33][34][35][36][37] These polytypes differ in the stacking of the oxygen layers (ABCABC for O3, ABBA for P2 and ABBCCA for P3), resulting in different intercalation sites for the alkali cation. After complete delithiation, the MO 2 layers are weakly bound by van der Waals forces.…”

Section: Structure Selectionmentioning

confidence: 99%

Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials

Ong

Chevrier

Hautier

et al. 2011

Energy Environ. Sci.

1,299

1,046

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To evaluate the potential of Na-ion batteries, we contrast in this work the difference between Na-ion and Li-ion based intercalation chemistries in terms of three key battery properties -voltage, phase stability and diffusion barriers. The compounds investigated comprise the layered AMO 2 and AMS 2 structures, the olivine and maricite AMPO 4 structures, and the NA-SICON A 3 V 2 (PO 4 ) 3 structures. The calculated Na voltages for the compounds investigated are 0.18-0.57 V lower than that of the corresponding Li voltages, in agreement with previous experimental data. We believe the observed lower voltages for Na compounds are predominantly a cathodic effect related to the much smaller energy gain from inserting Na into the host structure compared to inserting Li. We also found a relatively strong dependence of battery properties with structural features. In general, the difference between the Na and Li voltage of the same compound, ∆V Na-Li , is less negative for the maricite structures preferred by Na, and * To whom correspondence should be addressed 1 more negative for the olivine structures preferred by Li. The layered compounds have the most negative ∆V Na-Li . In terms of phase stability, we found that open structures, such as the layered and NASICON structures that are better able to accommodate the larger Na + ion generally have both Na and Li versions of the same compound. For the close-packed AMPO 4 structures, our results show that Na generally prefers the maricite structure, while Li prefers the olivine structure, in agreement with previous experimental work. We also found surprising evidence that the barriers for Na + migration can potentially be lower than that for Li + migration in the layered structures. Overall, our findings indicate that Na-ion systems can be competitive with Li-ion systems.

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Section: Structure Selectionmentioning

confidence: 99%

Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials

Ong

Chevrier

Hautier

et al. 2011

Energy Environ. Sci.

1,299

1,046

View full text Add to dashboard Cite

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“…Na-ion intercalating transition-metal oxides were first studied for their potential electrochemical properties in the 1980s, showing reversible Na intercalation for seven layered oxide systems with 3d transition metals (TMs): Na x MO 2 (M ¼ Ti [6], V [7], Cr [8,9], Mn [10], Fe [11], Co [12], and Ni [8]). This is in sharp contrast to their Li equivalents, which reversibly exchange Li only for M ¼ Co and Ni [4,9,13].…”

Section: Introductionmentioning

confidence: 99%

Vacancy Ordering in O3 -Type Layered Metal Oxide Sodium-Ion Battery Cathodes

et al. 2015

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Current state-of-the-art Na-ion battery cathodes are selected from the broad chemical space of layered first-row transition-metal (TM) oxides. Unlike their lithium-ion counterparts, seven first-row layered TM oxides can intercalate Na ions reversibly. Their voltage curves indicate significant and numerous reversible phase transformations during electrochemical cycling. These transformations are not yet fully understood but arise from Na-ion vacancy ordering and metal oxide slab glide. In this study, we investigate the nature of vacancy ordering within the O3 host lattice framework. We generate predicted electrochemical voltage curves for each of the Na-ion intercalating layered TM oxides by using a high-throughput framework of density-functional-theory calculations. We determine a set of vacancy-ordered phases appearing as ground states in all Na x MO 2 systems and investigate the energy effect of the stacking of adjacent layers.

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“…Recently, several types of insertion materials have been introduced as cathode materials for sodium-ion batteries (SIBs) including P2-types [9][10][11][12][13][14][15][16] , O3-types [17][18][19][20][21][22][23][24][25][26][27][28][29] , pyrophosphates [30][31][32] and organo-compounds [33][34][35] . Owing to the large ionic size of Na þ ions (1.02 Å), their insertion into a spinel framework does not readily occur.…”

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confidence: 99%

“…In contrast, two-dimensional layer structures do favour the insertion of Na þ ions into their structures. Among these, P2-(refs 9-16) and O3-types [17][18][19][20][21][22][23][24][25][26][27][28][29] , which are classified by their sequence of oxygen stacking, are of interest because of their large reversible capacities. For layer-structured compounds, the P2-type usually stabilizes into Na-deficient compositions such as Na 2/3 MO 2 (M: Ni, Co, Mn, Fe and so on).…”

mentioning

confidence: 99%

“…O3-type compounds, typically NaMO 2 (M: Ni, Co, Mn, Fe, Cr, V and so on), possess the same crystal structure as LiMO 2 (M: Ni, Co, Mn) [17][18][19][20][21][22][23][24][25][26][27][28][29] . These layer structures are readily synthesized via various methods such as the ceramic method 17,18,20,21,25,27 , co-precipitation 19,22,23,26 and sol-gel processing 24 . Among them, co-precipitation has been particularly effective for the creation of hydroxide and oxalate structures and can be used to prepare multi-component (Ni-FeMn) hydroxide and oxalate forms that give phase-pure Na[NiFeMn]O 2 products 22,23 (ref.…”

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confidence: 99%

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Radially aligned hierarchical columnar structure as a cathode material for high energy density sodium-ion batteries

et al. 2015

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Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar With this cathode material, we show that an electrochemical reaction based on Ni 2 þ /3 þ /4 þ is readily available to deliver a discharge capacity of 157 mAh (g-oxide) À 1 (15 mA g À 1 ), a capacity retention of 80% (125 mAh g À 1 ) during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAh g -1 (1,500 mA g -1 , 10 C-rate). The cathode also exhibits good temperature performance even at À 20°C. These results originate from rather unique chemistry of the cathode material, which enables the Ni redox reaction and minimizes the surface area contacting corrosive electrolyte.

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Electrochemical Na-Deintercalation from NaVO2

Cited by 225 publications

References 27 publications

Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials

Voltage, stability and diffusion barrier differences between sodium-ion and lithium-ion intercalation materials

Vacancy Ordering in O3 -Type Layered Metal Oxide Sodium-Ion Battery Cathodes

Radially aligned hierarchical columnar structure as a cathode material for high energy density sodium-ion batteries

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