Layered Na[Ni1/3Fe1/3Mn1/3]O2 cathodes for Na-ion battery application

Kim, Donghan; Lee, Eungje; Slater, Michael; Lu, Wenquan; Rood, Shawn; Johnson, Christopher

doi:10.1016/j.elecom.2012.02.020

Cited by 432 publications

(291 citation statements)

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“…Recently, several layered Na x MO 2 (M: 3d transition metals, TMs) compounds have been proposed as positive electrode materials for sodium-ion batteries [42][43][44][45][46][47][48][49][50][51][52] . It has also been demonstrated that P2-type materials show better storage performance than that of O3-type materials (Note that the notations of P2 and O3 were defined by Delmas et al 53 , they refer to different ways of the stacking of the oxygen layer, for example, ABBA for P2, ABCABC for O3 and so on) 46 .…”

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A zero-strain layered metal oxide as the negative electrode for long-life sodium-ion batteries

et al. 2013

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Room-temperature sodium-ion batteries have shown great promise in large-scale energy storage applications for renewable energy and smart grid because of the abundant sodium resources and low cost. Although many interesting positive electrode materials with acceptable performance have been proposed, suitable negative electrode materials have not been identified and their development is quite challenging. Here we introduce a layered material, P2-Na 0.66 [Li 0.22 Ti 0.78 ]O 2 , as the negative electrode, which exhibits only B0.77% volume change during sodium insertion/extraction. The zero-strain characteristics ensure a potentially long cycle life. The electrode material also exhibits an average storage voltage of 0.75 V, a practical usable capacity of ca. 100 mAh g À 1 , and an apparent Na þ diffusion coefficient of 1 Â 10 À 10 cm À 2 s À 1 as well as the best cyclability for a negative electrode material in a half-cell reported to date. This contribution demonstrates that P2-Na 0.66 [Li 0.22 Ti 0.78 ]O 2 is a promising negative electrode material for the development of rechargeable long-life sodium-ion batteries.

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A zero-strain layered metal oxide as the negative electrode for long-life sodium-ion batteries

et al. 2013

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“…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).…”

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confidence: 99%

“…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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“…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. 24).…”

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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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“…However, there is possibility that existence reserves of lithium is depleted by increasing the demand of lithium in recent years and anxiety that the supply amount of Li + -ion battery is limited in the future [1][2][3][4]. Thus, it is important that find alternative resources to lithium.…”

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confidence: 99%

Ion-Exchange Reaction Of A-Site In A2Ta2O6 Pyrochlore Crystal Structure

Matsunami¹,

Hashizume²,

Saiki³

2015

Archives of Metallurgy and Materials

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Na + or K + ion rechargeable battery is started to garner attention recently in Place of Li+ ion cell. It is important that A+ site ion can move in and out the positive-electrode materials. When K 2 Ta 2 O 6 powder had a pyrochlore structure was only dipped into NaOH aqueous solution at room temperature, Na 2 Ta 2 O 6 was obtained. K 2 Ta 2 O 6 was fabricated from a tantalum sheet by a hydrothermal synthesize with KOH aqueous solution. When Na 2 Ta 2 O 6 was dipped into KOH aqueous solution, K 2 Ta 2 O 6 was obtained again. If KTaO 3 had a perovskite structure was dipped, Ion-exchange was not observed by XRD. Because a lattice constant of pyrochlore structure of K-Ta-O system is bigger than perovskite, K + or Na + ion could shinny through and exchange between Ta 5+ and O 2− ion site in a pyrochlore structure. K + or Na + ion exchange of A 2 Ta 2 O 6 pyrochlore had reversibility. Therefore, A 2 Ta 2 O 6 had a pyrochlore structure can be expected such as Na + ion rechargeable battery element.Keywords: K 2 Ta 2 O 6, Na 2 Ta 2 O 6, Ion-exchange, pyrochlore structure, perovskite structure Akumulatory w którym jako nośniki ładunku wykorzystywane są jony Na + lub K + budzą coraz większe zainteresowanie jako alternatywa dla ogniw litowo-jonowych. Należy podkreślić, że kationy w podsieci A + potrafią się przemieszczać z-i do dodatnio naładowanych materiałów elektrodowych. Gdy proszek K 2 Ta 2 O 6 posiadający strukturę pirochloru zanurzono w roztworze wodnym NaOH w temperaturze pokojowej, otrzymano Na 2 Ta 2 O 6 . K 2 Ta 2 O 6 otrzymano poprzez obróbkę arkuszu tantalu metodą hydrotermalną wykorzystując roztwór wodny KOH. Gdy zanurzono Na 2 Ta 2 O 6 w wodnym roztworze KOH, otrzymano z powrotem K 2 Ta 2 O 6 . Natomiast, gdy zanurzono KTaO 3 o strukturze perowskitu, nie obserwowano wymiany jonowej. Dlatego, że stała sieciowa w strukturze pirochloru układu K-Ta-O jest większa niż w przypadku perowskitu, jony K + lub Na + mogą się poruszać i wymieniać w podsieci Ta 5+ i O 2− w pirochlorze. Wymiana jonów K + lub Na + w pirochlorze A 2 Ta 2 O 6 jest odwracalna. Z tego powodu można się spodziewać, że związek A 2 Ta 2 O 6 o strukturze pirochloru może znaleźć potencjalne zastosowanie jako element akumulatora pracującego z jonami Na + .

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Layered Na[Ni1/3Fe1/3Mn1/3]O2 cathodes for Na-ion battery application

Cited by 432 publications

References 24 publications

A zero-strain layered metal oxide as the negative electrode for long-life sodium-ion batteries

A zero-strain layered metal oxide as the negative electrode for long-life sodium-ion batteries

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

Ion-Exchange Reaction Of A-Site In A2Ta2O6 Pyrochlore Crystal Structure

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