Na4Mn9O18 as a positive electrode material for an aqueous electrolyte sodium-ion energy storage device

Whitacre, Jay; Tevar, A. D.; Sharma, Shyam S.

doi:10.1016/j.elecom.2010.01.020

Cited by 364 publications

(287 citation statements)

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“…A combination of the characterization tools, including synchrotron-based powder XRD, and scanning transmission electron microscopy (STEM) were used, together with density functional theory (DFT) calculation, to locate the potential Ti atomic positions in the as-prepared compounds. In fact, tunnel-type Na 0.44 MnO 2 oxide has been widely studied as a potential positive electrode for rechargeable sodium-ion or lithium-ion (after Na þ /Li þ ion exchange) batteries [30][31][32]35,39 . Although the Ti-substituted single crystal of 'Na 4 38 .…”

Section: Resultsmentioning

confidence: 99%

“…Two sodium sites (Na (2) and Na(3)) are situated in large S-shaped tunnels, whereas another site (Na (1)) is located in smaller tunnels. Unlike most layered oxides, Na 0.44 MnO 2 is very stable in aqueous solution even upon Na extraction and insertion 21,26,31 . For the negative electrode materials, only a few materials, including activated carbon and NaTi 2 (PO 4 ) 3 have been identified in the literature 21,[26][27][28] for sodium-ion batteries.…”

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confidence: 99%

“…For the positive electrode materials, Prussian blue analogues, polyanionic compounds and oxides are widely investigated. Among the numerous identified oxides of potential interest, Na 0.44 MnO 2 with a tunnel structure is particularly attractive because of its unique large tunnels suitable for sodium insertion/extraction [29][30][31][32][33][34] . The crystal structure of Na 0.44 MnO 2 is shown in Fig.…”

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Ti-substituted tunnel-type Na0.44MnO2 oxide as a negative electrode for aqueous sodium-ion batteries

et al. 2015

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The aqueous sodium-ion battery system is a safe and low-cost solution for large-scale energy storage, because of the abundance of sodium and inexpensive aqueous electrolytes. Although several positive electrode materials, for example, Na 0.44 MnO 2 , were proposed, few negative electrode materials, for example, activated carbon and NaTi 2 (PO 4 ) 3 , are available. Here we show that Ti-substituted Na 0.44 MnO 2 (Na 0.44 [Mn 1-x Ti x ]O 2 ) with tunnel structure can be used as a negative electrode material for aqueous sodium-ion batteries. This material exhibits superior cyclability even without the special treatment of oxygen removal from the aqueous solution. Atomic-scale characterizations based on spherical aberration-corrected electron microscopy and ab initio calculations are utilized to accurately identify the Ti substitution sites and sodium storage mechanism. Ti substitution tunes the charge ordering property and reaction pathway, significantly smoothing the discharge/charge profiles and lowering the storage voltage. Both the fundamental understanding and practical demonstrations suggest that Na 0.44 [Mn 1-x Ti x ]O 2 is a promising negative electrode material for aqueous sodium-ion batteries.

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Ti-substituted tunnel-type Na0.44MnO2 oxide as a negative electrode for aqueous sodium-ion batteries

et al. 2015

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“…Aqueous lithium-ion batteries using cathode materials adopted from commercialized organic electrolyte cells have been explored, but in general they have shown limited cycle life [6][7][8] . Aqueous sodium cells using a Na x MnO 2 cathode and a capacitive carbon anode have been demonstrated to offer long cycle life, but have limited rate capability 9,10 . These aqueous battery technologies have been limited primarily by the development of anode materials that have the correct potential and that are chemically stable at the desired electrolyte pH 11 .…”

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A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

et al. 2012

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new types of energy storage are needed in conjunction with the deployment of solar, wind and other volatile renewable energy sources and their integration with the electric grid. no existing energy storage technology can economically provide the power, cycle life and energy efficiency needed to respond to the costly short-term transients that arise from renewables and other aspects of grid operation. Here we demonstrate a new type of safe, fast, inexpensive, long-life aqueous electrolyte battery, which relies on the insertion of potassium ions into a copper hexacyanoferrate cathode and a novel activated carbon/polypyrrole hybrid anode. The cathode reacts rapidly with very little hysteresis. The hybrid anode uses an electrochemically active additive to tune its potential. This high-rate, high-efficiency cell has a 95% round-trip energy efficiency when cycled at a 5C rate, and a 79% energy efficiency at 50C. It also has zero-capacity loss after 1,000 deep-discharge cycles.

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“…With one of the highest energy densities of known energy storage technologies, Li-ion batteries are finding increasingly large-scale applications in electrified transportation and grid storage. In recent years, there has also been a resurgence of interest in rechargeable sodium-ion (Na-ion) batteries, [6][7][8][9][10][11][12] which function on the same basic principle but with Na + instead of Li + because of concerns regarding the abundance and cost of lithium. Figure 1 shows a representation of a rechargeable alkali-ion battery.…”

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confidence: 99%

Computational studies of solid-state alkali conduction in rechargeable alkali-ion batteries

Deng

Ong

2016

NPG Asia Mater

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The facile conduction of alkali ions in a crystal host is of crucial importance in rechargeable alkali-ion batteries, the dominant form of energy storage today. In this review, we provide a comprehensive survey of computational approaches to study solid-state alkali diffusion. We demonstrate how these methods have provided useful insights into the design of materials that form the main components of a rechargeable alkali-ion battery, namely the electrodes, superionic conductor solid electrolytes and interfaces. We will also provide a perspective on future challenges and directions. The scope of this review includes the monovalent lithium-and sodium-ion chemistries that are currently of the most commercial interest. NPG Asia Materials (2016) 8, e254; doi:10.1038/am.2016.7; published online 25 March 2016 INTRODUCTIONThe facile conduction of alkali ions in a crystal is of critical importance in energy storage. Today, the dominant form of energy storage in consumer electronics is the rechargeable lithium-ion (Li-ion) battery, 1-5 a device that functions entirely on the basis of the reversible transport of Li + ions. With one of the highest energy densities of known energy storage technologies, Li-ion batteries are finding increasingly large-scale applications in electrified transportation and grid storage. In recent years, there has also been a resurgence of interest in rechargeable sodium-ion (Na-ion) batteries, 6-12 which function on the same basic principle but with Na + instead of Li + because of concerns regarding the abundance and cost of lithium. Figure 1 shows a representation of a rechargeable alkali-ion battery. The typical electrode in an alkali-ion battery is an intercalation compound, which, as the name implies, stores alkali ions by inserting them into its crystal structure in a topotactic manner. During discharge, A + ions are transported from the anode, through the electrolyte and into the cathode. The reverse happens during charge. Throughout this review, we will adopt the customary terminology of defining the 'cathode' as the positive electrode during discharge, even though the formal definition of the cathode changes depending on whether the charging or discharging process is being referred to. Current cathodes are typically transition metal oxides, and the insertion/removal of each A + in the cathode is accompanied by the concomitant reduction/oxidation of a transition metal ion to accommodate the compensating insertion/removal of an electron. Graphitic carbon is the most common anode.The performance of a rechargeable alkali-ion battery depends crucially on the ease with which alkali ions move in the host crystal of the cathode and anode, in the electrolyte, and in the electrodeelectrolyte interface. Poor alkali transport in any part of the battery

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Na4Mn9O18 as a positive electrode material for an aqueous electrolyte sodium-ion energy storage device

Cited by 364 publications

References 10 publications

Ti-substituted tunnel-type Na0.44MnO2 oxide as a negative electrode for aqueous sodium-ion batteries

Ti-substituted tunnel-type Na0.44MnO2 oxide as a negative electrode for aqueous sodium-ion batteries

A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

Computational studies of solid-state alkali conduction in rechargeable alkali-ion batteries

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