Magnetic Structure and Properties of the Na2CoP2O7 Pyrophosphate Cathode for Sodium-Ion Batteries: A Supersuperexchange-Driven Non-Collinear Antiferromagnet

Barpanda, Prabeer; Avdeev, Maxim; Ling, Chris D.; Lu, Jiechen; Yamada, Atsuo

doi:10.1021/ic302191d

Cited by 53 publications

(52 citation statements)

References 29 publications

(47 reference statements)

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“…In addition to Na 2 MnP 2 O 7 , Na 2 CoP 2 O 7 was also investigated as a high voltage cathode 178, 179, 180. Yamada's group reported an orthorhombic structure Na 2 CoP 2 O 7 with the space group of Pna 2 1 , which offered a two‐dimensional Na‐diffusion pathway and could deliver a reversible discharge capacity of 80 mAh g –1 at an average potential of 3 V 178.…”

Section: Pyrophosphate Materials For Na Storagementioning

confidence: 99%

Phosphate Framework Electrode Materials for Sodium Ion Batteries

et al. 2017

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Sodium ion batteries (SIBs) have been considered as a promising alternative for the next generation of electric storage systems due to their similar electrochemistry to Li‐ion batteries and the low cost of sodium resources. Exploring appropriate electrode materials with decent electrochemical performance is the key issue for development of sodium ion batteries. Due to the high structural stability, facile reaction mechanism and rich structural diversity, phosphate framework materials have attracted increasing attention as promising electrode materials for sodium ion batteries. Herein, we review the latest advances and progresses in the exploration of phosphate framework materials especially related to single‐phosphates, pyrophosphates and mixed‐phosphates. We provide the detailed and comprehensive understanding of structure–composition–performance relationship of materials and try to show the advantages and disadvantages of the materials for use in SIBs. In addition, some new perspectives about phosphate framework materials for SIBs are also discussed. Phosphate framework materials will be a competitive and attractive choice for use as electrodes in the next‐generation of energy storage devices.

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Section: Pyrophosphate Materials For Na Storagementioning

confidence: 99%

Phosphate Framework Electrode Materials for Sodium Ion Batteries

et al. 2017

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“…Na 2 CoP 2 O 7 can yield a reversible capacity of about 80 mA h g −1 at ca. 2-4 V versus Na/Na + [63,64]. Although a high initial discharge specific capacity can normally be achieved for the phosphates polyanions, the unstable structure results in relatively poor cycling performances.…”

Section: Pyrophosphate Materialsmentioning

confidence: 99%

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

Wang

Shanmukaraj

et al. 2018

Electrochem. Energ. Rev.

252

122

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Sodium-ion batteries have been emerging as attractive technologies for large-scale electrical energy storage and conversion, owing to the natural abundance and low cost of sodium resources. However, the development of sodium-ion batteries faces tremendous challenges, which is mainly due to the difficulty to identify appropriate cathode materials and anode materials. In this review, the research progresses on cathode and anode materials for sodium-ion batteries are comprehensively reviewed. We focus on the structural considerations for cathode materials and sodium storage mechanisms for anode materials. With the worldwide effort, high-performance sodium-ion batteries will be fully developed for practical applications.

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“…[145] Pyrophosphate Na 2 MP 2 O 7 (M = Fe, Mn, Co) has recently been suggested as a possible electroactive cathode material for SIBs. [146] The robust and stable 3D (P 2 O 7 ) 4 framework can facilitate the Na + accommodation, and the abundance of the crystal configuration of Na 2 MP 2 O 7 can also provide a series of opportunities to host the Na + insertion/extraction with a notably wide redox potential range from 2.0 V to 4.9 V. [146,147] It is suggested that Na 2 CoP 2 O 7 has three polymorphs including orthorhombic, tetragonal, and triclinic phases. Orthorhombic (Pna21) or tetragonal Na 2 CoP 2 O 7 is a layered structure with [Co(P 2 O 7 )] 2− layers constructed from oxygen-linked CoO 4 tetrahedra and their four surrounding P 2 O 7 units, offering continuous channels for Na + transportation and thus efficient Na + (de-)intercalation.…”

Section: Pyrophosphatesmentioning

confidence: 99%

“…Orthorhombic (Pna21) or tetragonal Na 2 CoP 2 O 7 is a layered structure with [Co(P 2 O 7 )] 2− layers constructed from oxygen-linked CoO 4 tetrahedra and their four surrounding P 2 O 7 units, offering continuous channels for Na + transportation and thus efficient Na + (de-)intercalation. [146] Although the triclinic polymorph has also been predicted to be a redox-active material, the thermodynamic instability greatly limits its utilization as a cathode material for SIBs. Recently, a stable triclinic polymorph, Na 2−x CoP 2 O 7 , has been successfully synthesized based on a Na-deficiencies-stabilization strategy, which showed an average potential of ≈4.3 V (vs Na + /Na) with three plateaus at 3.95 V, 4.33 V, and 4.43 V and delivered a reversible and stable capacity of ≈80 mA h g −1 at C/20, exhibiting an enhanced energy density of 344 W h kg −1 compared to the orthorhombic case (240 W h kg −1 ).…”

Section: Pyrophosphatesmentioning

confidence: 99%

Advanced Cathode Materials for Sodium‐Ion Batteries: What Determines Our Choices?

et al. 2017

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lithium with cheaper alternatives might make future batteries less susceptible to price fluctuations when the market expands. [5] This concern has in turn spawned a flurry of research activity to look beyond LIB technology. In view of the various rechargeable batteries, sodiumion batteries (SIBs) that consist of a main element of seawater made their presence felt in the battery industry due to their chemical similarity (e.g., only 0.3 V more positive than lithium) but higher abundance compared to lithium, [6] as illustrated in Table 1. SIBs work in the same way as LIBs in that they involve the reversible migration of cations/anions across a separator toward the electrodes to realize voltage-driven electrochemical reactions. [7] The upward trend for sodium-ion battery research is driven by the concern over the scarcity and price rise of lithium. Hence, these major merits, as well as the suitable redox potential (E = 0.3 V vs Li) make the SIB an appropriate choice as a rechargeable battery system.In fact, SIBs started almost in parallel with LIBs in the 1980s but the development of LIBs eventually eclipsed SIBs due to the electrochemical performances of SIBs. [8,9] A major obstacle is that it is difficult to get a sodium host material with comparable operating voltage and capacity as the LIB analogs. Firstly, the larger Na + radius (0.98 Å) than that of Li + (0.69 Å) leads to the kinetically sluggish Na + insertion/extraction and transport cross the host-material framework, which will always make the specific capacity and rate capacity largely degraded. [10] Secondly, the larger volume expansion caused by Na + insertion will also bring a change in the phase and lattice of the host materials, making it difficult to achieve a favorable electrochemical stability compared with the LIB counterparts. [11] In addition, they also suffer from a lower specific energy than LIBs, due to the lower potential and larger atomic weight of sodium. It is still a challenge to build an affordable Na-host materials endowed with a high specific energy (e.g., 500 W h kg −1 in LIBs). [12] Recently, the topic of SIBs was revisited in the hope of exploring possible ways to overcome the concerns about the low energy density and poor cycling life of SIBs.In spite of the above distinct drawbacks, SIBs can actually behave slightly differently in some chemical aspects. For instance, sodium does not react with aluminum, which is contrary to the alloying tendency of lithium. In the commercial market, manufacturers could appreciate this "inertness" to reduce the production cost of batteries by substituting the Among the various energy solutions, lithium-ion batteries (LIBs) play an important role in the process of the transition from fossil fuels to renewables. However, the necessity to replace lithium with cheaper alternatives due to its scarcity has recently attracted great interest to developing sodium-ion batteries (SIBs). Hence, the discovery and development of suitable cathode materials that exhibit high specific capacity, good cycling stabil...

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Magnetic Structure and Properties of the Na₂CoP₂O₇ Pyrophosphate Cathode for Sodium-Ion Batteries: A Supersuperexchange-Driven Non-Collinear Antiferromagnet

Cited by 53 publications

References 29 publications

Phosphate Framework Electrode Materials for Sodium Ion Batteries

Phosphate Framework Electrode Materials for Sodium Ion Batteries

Electrode Materials for Sodium-Ion Batteries: Considerations on Crystal Structures and Sodium Storage Mechanisms

Advanced Cathode Materials for Sodium‐Ion Batteries: What Determines Our Choices?

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