High‐Performance P2‐Type Na2/3(Mn1/2Fe1/4Co1/4)O2 Cathode Material with Superior Rate Capability for Na‐Ion Batteries

Liu, Lei; Li, Xin; Bo, Shou‐Hang; Wang, Yan; Chen, Hailong; Twu, Nancy; Wu, Di; Ceder, Gerbrand

doi:10.1002/aenm.201500944

Cited by 139 publications

(124 citation statements)

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“…In contrast, P2-Na 2/3 (Mn 1/2 Fe 1/4 Co 1/4 )O 2 exhibited a superior rate performance of 130 mA h g −1 at 30 C, while the reversibility of the phase transition above 4.2 V requires further improvement. [ 61 ] as a function of the Na content x and voltage profi les. P2 represents the initial structure of the electrode, and "Z" and P'2 represent an uncharacterized high potential phase and a distorted phase, respectively.…”

Section: Wileyonlinelibrarycommentioning

confidence: 99%

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Kim

Zhang

et al. 2016

Advanced Energy Materials

885

595

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Grid‐scale energy storage systems (ESSs) that can connect to sustainable energy resources have received great attention in an effort to satisfy ever‐growing energy demands. Although recent advances in Li‐ion battery (LIB) technology have increased the energy density to a level applicable to grid‐scale ESSs, the high cost of Li and transition metals have led to a search for lower‐cost battery system alternatives. Based on the abundance and accessibility of Na and its similar electrochemistry to the well‐established LIB technology, Na‐ion batteries (NIBs) have attracted significant attention as an ideal candidate for grid‐scale ESSs. Since research on NIB chemistry resurged in 2010, various positive and negative electrode materials have been synthesized and evaluated for NIBs. Nonetheless, studies on NIB chemistry are still in their infancy compared with LIB technology, and further improvements are required in terms of energy, power density, and electrochemical stability for commercialization. Most recent progress on electrode materials for NIBs, including the discovery of new electrode materials and their Na storage mechanisms, is briefly reviewed. In addition, efforts to enhance the electrochemical properties of NIB electrode materials as well as the challenges and perspectives involving these materials are discussed.

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Section: Wileyonlinelibrarycommentioning

confidence: 99%

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Kim

Zhang

et al. 2016

Advanced Energy Materials

885

595

View full text Add to dashboard Cite

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“…In contrast, a very wide single P2-phase region was observed in Na x (Mn 1/2 Fe 1/4 Co 1/4 )O 2 (0.34 < x < 0.95); thus, a superior rate performance of 130 mA h g −1 at 30 C was achieved, although the reversibility of the phase transformation above 4.2 V requires further improvement. [214] The transition metal ratio control strategy was applied to the P2-Na 2/3 Mn 1/3 Fe 1/3 Co 1/3 O 2 cathode, for which stable cyclic behavior was obtained by limiting the voltage cutoff to 4.1 V versus Na + /Na. [215] In addition, the electrochemical properties of Ni/Co/Fe-based O3-NaNi 1/3 Co 1/3 Fe 1/3 O 2 [216] and O3-Na(NiCoFeTi) 1/4 O 2 [217] were also explored as cathode materials for SIBs.…”

Section: Wwwadvenergymatdementioning

confidence: 99%

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

Wang

You

Yin

et al. 2017

Advanced Energy Materials

665

464

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sources into large-scale grids, inexpensive, efficient, and fast-responding electrical energy storage (EES) systems are essential to store the off-peak energy and releasing the stored energy during the onpeak period. Among various EES systems, rechargeable batteries represent one of the most competitive technologies because of their high conversion efficiency and environmental friendliness. [1][2][3][4] For stationary EES systems, batteries with low cost, high safety, high rate capability, and long cycle stability are highly desired.Lithium (Li)-ion batteries (LIBs) have achieved great success in the market of portable electronics and electric vehicles since their commercialization by Sony Company in 1991. However, the shortage of Li resources in nature gives rise to a concern about its sustainable development in grid scale. Compared with Li, sodium resource has rich natural abundance in the earth crust and a worldwide distribution, consequently leading to a low price of sodium-based raw materials (e.g., the cost of Na 2 CO 3 is about 25-30 times lower than that of Li 2 CO 3 ). Besides, sodium has a suitable redox potential (E 0 (Na + /Na) = −2.71 V versus standard hydrogen electrode (SHE), 0.3 V above that of Li + /Li) and similar physical and chemical properties with lithium. [5,6] Therefore, rechargeable sodium-ion batteries (SIBs), which have a similar "rockingchair" working principle of LIBs, are emerging as an appealing choice as alternatives for LIBs. Note that it is difficult for SIBs to bypass LIBs in terms of energy densities because of the much higher weight of Na and lower standard electrochemical potential. [7][8][9][10] Nevertheless, the use of low-cost materials, including inexpensive Na-based raw materials and Al current collectors for both cathodes and anodes in SIBs, could significantly reduce the cost. In this case, SIBs could be applied where cost-effectiveness rather than energy density is the most critical issue, e.g., in the field of large-scale EES. As a result, sodiumbased electroactive materials are enjoying renewed interest especially for very low cost systems for grid storage. [11,12] Given that cathode materials are the key component that determines energy density and cost, tremendous efforts have been devoted to exploring suitable positive electrode materials with high reversible capacity, rapid Na ions insertion/extraction, and good cycling stability in the past few years. [13,14] A broad range of compounds, including layered oxides, polyanionic frameworks, hexacyanoferrates, and organics, haveThe increasing demand for replacing conventional fossil fuels with clean energy or economical and sustainable energy storage drives better battery research today. Sodium-ion batteries (SIBs) are considered as a promising alternative for grid-scale storage applications due to their similar "rockingchair" sodium storage mechanism to lithium-ion batteries, the natural abundance, and the low cost of Na resources. Searching for appropriate electrode materials with acceptable electrochemical perfor...

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“…Replacing the liquid electrolyte with an inflammable solid state electrolyte can, in principle, eliminate the safety concerns, offering a promising path forward to extend the application of batteries to devices where safety is of uttermost importance. The development of fast Na-ion conductors as solid state electrolytes is a key enabler for an all-solid-state Na-ion battery technology, which can be less expensive than its Li counterpart due to the wider availability of Na resources and broader choice of Naintercalation cathodes [1][2][3][4][5][6] . However, few Na-ion solid state conductors with conductivity approaching that of liquid electrolytes currently exist [7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Structural and Na-ion conduction characteristics of Na₃PS_xSe_4−x

Wang

Ceder

2016

J. Mater. Chem. A

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Abstract:The recent discovery of the isostructrual cubic Na 3 PS 4 and Na 3 PSe 4 as fast Na-ion conductors provided a general structural framework for the exploration of new sodium superionic conductors. In this work, we systematically investigated the structures and ionic conduction characteristics of a series of compounds with the general chemical formula of Na 3 PS x Se 4-x . Synthesis of Na 3 PS 4 at different conditions (e.g., temperature, reaction vessel, mass of the precursors) reveals the reactivity of the precursors with the reaction tubes, producing different polymorphs. X-ray diffraction studies on the solid solution phases Na 3 PS x Se 4-x identified a tetragonal-to-cubic phase transition with increasing Se concentration. This observation is consistent with the computed stability of the tetragonal and cubic polymorphs, where the energy difference between the two polymorphs becomes very close to zero in Se-rich compositions.Furthermore, ab initio molecular dynamic simulations suggest that the fast Na-ion conduction in Na 3 PS x Se 4-x may not be causally related with the symmetry or the composition of these phases.The formation of defects, instead, enables fast Na-ion conduction in this class of materials.2

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High‐Performance P2‐Type Na_2/3(Mn_1/2Fe_1/4Co_1/4)O₂ Cathode Material with Superior Rate Capability for Na‐Ion Batteries

Cited by 139 publications

References 30 publications

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

Structural and Na-ion conduction characteristics of Na₃PS_xSe_4−x

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High‐Performance P2‐Type Na2/3(Mn1/2Fe1/4Co1/4)O2 Cathode Material with Superior Rate Capability for Na‐Ion Batteries

Cited by 139 publications

References 30 publications

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Recent Progress in Electrode Materials for Sodium‐Ion Batteries

Layered Oxide Cathodes for Sodium‐Ion Batteries: Phase Transition, Air Stability, and Performance

Structural and Na-ion conduction characteristics of Na3PSxSe4−x

Contact Info

Product

Resources

About

High‐Performance P2‐Type Na_2/3(Mn_1/2Fe_1/4Co_1/4)O₂ Cathode Material with Superior Rate Capability for Na‐Ion Batteries

Structural and Na-ion conduction characteristics of Na₃PS_xSe_4−x