Pure Single‐Crystalline Na1.1V3O7.9 Nanobelts as Superior Cathode Materials for Rechargeable Sodium‐Ion Batteries

Yuan, Shuang; Liu, Yongbing; Xu, Dan; Ma, Delong; Wang, Sai; Yang, Xiaohong; Cao, Zhanyi; Zhang, Xinbo

doi:10.1002/advs.201400018

Cited by 112 publications

(73 citation statements)

References 72 publications

(41 reference statements)

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“…[1][2][3][4][5] Owing to the much larger size of the sodium ion compared with the lithium ion, the identification of a suitable intercalation electrode material that can ensure reversible intercalation/extraction of sodium ions without an apparent volume change or structural degradation has been long pursued. [6][7][8] Amorphous iron phosphates have been identified as a promising cathode material for SIBs in view of their unique properties.…”

Section: Introductionmentioning

confidence: 99%

Kinetically controlled formation of uniform FePO4 shells and their potential for use in high-performance sodium ion batteries

et al. 2017

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Amorphous iron phosphates are potential cathode materials for sodium ion batteries. The amorphous FePO 4 matrix is able to insert/extract sodium ions reversibly without apparent structural degradation, resulting in stable performance during the charge/discharge process. However, the extremely low electronic conductivity of FePO 4 itself becomes a formidable obstacle for its application as a high-performance cathode material. Here, by tuning the growth kinetics of FePO 4 in an aqueous solution, we were able to control its formation onto a large variety of substrates, forming uniform core-shell structures. Specifically, the use of multiwalled carbon nanotubes as the core material together with the growth control of FePO 4 produced the core-shell structure of MWCNTs@FePO 4 with a delicately controlled shell thicknesses. We confirmed that such a nanocomposite can act as an effective cathode material by taking advantage of both the highly conductive core and the electrochemically active shell, leading to improved battery performance as revealed by the high discharge capacity and the greatly improved rate capability. We anticipate that our progress in FePO 4 control offers new potential in different research fields, such as materials chemistry, catalysis and energy storage devices.

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Section: Introductionmentioning

confidence: 99%

Kinetically controlled formation of uniform FePO4 shells and their potential for use in high-performance sodium ion batteries

et al. 2017

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“…For linear dielectrics, J = 1/2DE = 1/2ε r ε 0 E 2 , where ε r is the dielectric constant of the ceramic materials and ε 0 is the vacuum permittivity [12][13][14][15][16][17]. Therefore, J strongly depends on the ε r and E, where E is limited by the breakdown strength (E b ).…”

Section: Introductionmentioning

confidence: 99%

Structure and dielectric properties of Nd(Zn1/2Ti1/2)O3 – BaTiO3 ceramics for energy storage applications

Zhou

et al. 2016

Journal of Alloys and Compounds

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“…Yuan et al have demonstrated single-crystalline Na 1.1 V 3 O 7.9 nanobelt cathodes for SIBs between 1.5 and 3.8 V, which exhibit superior electrochemical performances, including high specific capacity of 173 mA h g −1 , good cycle stability and rate capability, and high Coulombic efficiency. [66] The use of layered Na 2 MO 3 represents a viable strategy for enhancing the specific capacity due to there being a more than one electron process, an instance of a layered Na 2 RuO 3 showed reversible Na-ion insertion/extraction with capacity of 147 mA h g −1 (larger-than-one electron capacity of 137 mA h g −1 ) at 2.8 V vs Na/Na + and no capacity loss occurred during 20 cycles. [68] NaCrO 2 as a SIB cathode has a high theoretical redox capacity of 250 mA h g −1 based on the redox reaction of the Cr 6+ / 3+ couple.…”

Section: Single Transition-metal Oxidesmentioning

confidence: 99%

“…[93,94] A novel P2-O3 Na 0. 66 , good rate capability (134 mA h g −1 at 1C), and good cycling stability (84% retention after 50 cycles at 0.2C), as well as a largest energy density of approximately 640 W h kg −1 with 3.2 V for SIBs. [95] …”

Section: Mixed-cation Oxidesmentioning

confidence: 99%

“…[57] Besides the abovementioned Na-insertion oxides, other alternatives have also been intensively studied to achieve highperformance electrochemical activities for SIB cathodes, such as NaCrO 2 , [58][59][60] NaNiO 2 , [61] NaNbO 2 , [62] and NaV x O y . [63][64][65][66][67] All of these sodium single-transition oxides can be easily synthesized in air via solid-state reactions, co-precipitation routes, and hydrothermal methods. Synthesis of these materials in low dimensions can always significantly improve power-and energy-density over bulk electrode materials, and bring an enhanced electrochemical behavior.…”

Section: Single Transition-metal Oxidesmentioning

confidence: 99%

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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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Pure Single‐Crystalline Na_1.1V₃O_7.9 Nanobelts as Superior Cathode Materials for Rechargeable Sodium‐Ion Batteries

Cited by 112 publications

References 72 publications

Kinetically controlled formation of uniform FePO4 shells and their potential for use in high-performance sodium ion batteries

Kinetically controlled formation of uniform FePO4 shells and their potential for use in high-performance sodium ion batteries

Structure and dielectric properties of Nd(Zn1/2Ti1/2)O3 – BaTiO3 ceramics for energy storage applications

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

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