Electrochemical intercalation activity of layered NaCrO2 vs. LiCrO2

Komaba, Shinichi; Takei, Chikara; Nakayama, Tetsuri; Ogata, Atsushi; Yabuuchi, Naoaki

doi:10.1016/j.elecom.2009.12.033

Cited by 544 publications

(490 citation statements)

References 15 publications

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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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“…S odium-ion rechargeable batteries, using abundant sodium sources, are suitable for use in distributed power systems that store renewable energy at individual houses [1][2][3][4] . Currently, sodium − sulphur (NAS) batteries 5 are used for large-scale storage, because they have high energy densities of up to 760 Wh kg − 1 .…”

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Superionic glass-ceramic electrolytes for room-temperature rechargeable sodium batteries

et al. 2012

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Innovative rechargeable batteries that can effectively store renewable energy, such as solar and wind power, urgently need to be developed to reduce greenhouse gas emissions. All-solid-state batteries with inorganic solid electrolytes and electrodes are promising power sources for a wide range of applications because of their safety, long-cycle lives and versatile geometries. Rechargeable sodium batteries are more suitable than lithium-ion batteries, because they use abundant and ubiquitous sodium sources. solid electrolytes are critical for realizing allsolid-state sodium batteries. Here we show that stabilization of a high-temperature phase by crystallization from the glassy state dramatically enhances the na + ion conductivity. An ambient temperature conductivity of over 10 − 4 s cm − 1 was obtained in a glass-ceramic electrolyte, in which a cubic na 3 Ps 4 crystal with superionic conductivity was first realized. All-solid-state sodium batteries, with a powder-compressed na 3 Ps 4 electrolyte, functioned as a rechargeable battery at room temperature.

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“…[7][8][9][10][11][12] Since then, however, research into sodium-ion (Na-ion) batteries have been sporadic, [13][14][15] due in no small part to the successes of Li-ion battery chemistry. Nevertheless, there has been a resurgence of research interest in Na-ion battery chemistries in recent years [16][17][18][19][20][21][22][23][24] because of its potential cost advantages. Sodium is far more abundant than lithium, though it has not been conclusively demonstrated that lithium reserves would be an issue in the foreseeable future.…”

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

Ong

Chevrier

Hautier

et al. 2011

Energy Environ. Sci.

1,309

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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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Electrochemical intercalation activity of layered NaCrO2 vs. LiCrO2

Cited by 544 publications

References 15 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

Superionic glass-ceramic electrolytes for room-temperature rechargeable sodium batteries

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

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