Hydrated vanadium pentoxide with superior sodium storage capacity

Wei, Qiulong; Liu, Jin; Feng, Wei; Sheng, Jinzhi; Tian, Xiaocong; He, Liang; An, Qinyou; Mai, Liqiang

doi:10.1039/c5ta00502g

Cited by 194 publications

(182 citation statements)

References 42 publications

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“…Furthermore, amorphous, bi-layered V 2 O 5 gels revealed noticeably sodium storage capacity. [18][19][20] The main feature of V 2 O 5 gels is the possibility to tune the interlayer space distance during the synthesis. This can be expanded up to 13 Å, a value that is almost twice that of other layered transition metal oxides.…”

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confidence: 99%

Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery

Moretti

Secchiaroli

Buchholz

et al. 2015

J. Electrochem. Soc.

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Boosted by costs benefits, the development of room temperature Na-ion batteries is strongly desired for stationary applications. In this study we explore the possible use of V 2 O 5 aerogel as anode material for sodium ion batteries. The aerogel is able to reversibly insert more than 3 Eq. of sodium in the voltage range 0.1 V-4 V vs. Na/Na + demonstrating to possess additional capacity when cycled to lower voltage. The anode delivers about 200 mAh g −1 in the voltage range 0.01 V-1.5 V vs. Na/Na + . The preliminary characterization of a full Na-ion cell made coupling the V 2 O 5 aerogel anode with carbon-coated Na 3 V 2 (PO 4 In the past years lithium ion batteries (LIBs) have strongly evolved, conquering the market of portable electronic devices and penetrating that of electro-mobility. However, issues related to lithium availability and costs of other materials used in LIBs are rising up. Therefore, special efforts are presently dedicated to the development of alternative battery chemistries based on different shuttling cations like Mg 2+ , 1,2 Al 3+3,4 and Na + . 5,6 In this context, sodium ion batteries (SIBs) are considered as a suitable alternative to the more expensive LIB technology in stationary energy storage applications because their production does not require any technological development aside from the development of appropriate electrodes' materials. In comparison with Li + , the Na + cation is heavier (23 g mol −1 vs 6.94 g mol −1 ) and larger (0.98 Å vs 0.69 Å) leading to lower gravimetric energy and, possibly, slower kinetics. On the other hand, sodium is widely available, therefore, its cost is noticeably low, and worldwide distributed. Moreover, the absence of known Na-Al electrochemically formed alloys permits the use of aluminum current collectors at the anode side, further reducing the cost of the final battery.Presently, the research stream in SIBs' development concerns with the identification of suitable electrode materials taking advantage of the mature background available in lithium ion systems. Several cathode materials are currently investigated, especially those based on layered oxides and polyanionic compounds.6-10 The latter exhibit the advantage of being thermally more stable, 11 thus, enabling safer energy storage.Vanadium-based compounds are of particular interest due to the different oxidation states accessible realizing multi-electrons redox reactions. Indeed, Na 3 V 2 (PO 4 ) 3 is able to reversibly release two equivalents of Na + ions (corresponding to a theoretical capacity of 118 mAh g −1 ), making use of the V 3+ /V 4+ redox couple at around 3.3 V. Additionally, the same material is also investigated as negative electrode as, at 1.5 V, one additional equivalent of Na + is reversibly hosted into the structure while V 3+ is partly reduced to V 2+ . 12 The main drawback of this material is represented by the rather low electronic conductivity, which, however, can be by-passed with the use of nano-sized particles, as well as their carbon-coating. 13Among the layered oxid...

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confidence: 99%

Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery

Moretti

Secchiaroli

Buchholz

et al. 2015

J. Electrochem. Soc.

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“…The open framework facilitates ion movement, while the nanostructuring strategy can decrease the solid-state diffusion limitations and thus enhance the intercalation kinetics. [70] To name a few, preferentially exposed facets, [33,35] metal ions, or water molecule preintercalation [42,43] and the regulation of short-range order in layered structure [34] show great interests upon highperformance vanadium layered oxides. Whereas how to accurately tune the lattice space and stabilize its layered structure for long-term cycle needs to be addressed.…”

Section: Discussionmentioning

confidence: 99%

Nanostructured layered vanadium oxide as cathode for high-performance sodium-ion batteries: a perspective

2017

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Sodium-ion batteries (SIBs) have received intensive attentions owing to the abundant and inexpensive sodium (Na) resource. Layered vanadium oxides are featured with various valence states and corresponding compounds, and through multi-electron reaction they are capable to deliver high Na storage capacity. The rational construction of unique structures is verified to improve their Na storage properties. This perspective provides an overview of recent advances in layered vanadium oxide for SIBs, with a particular focus on construction of novel nanostructures, and mechanism studies via in situ characterization. Finally, we predict possible breakthroughs and future trends that lie ahead for high-performance layered vanadium oxides SIBs cathode.

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“…凝胶的层间距较大, 可达 14.0 Å 以上, 超过了三斜晶系 [18,24,25] . 然而, 正是由于其层间距较大, V 2 O 5 凝胶的双层结构在离子嵌入时收缩明显, 在离子脱出时膨胀严重, 导致充放电过程中结构不稳定 [26,27] . 这种"晶格呼吸"现象导致了电极的钝化以及随之而来的容量衰减 [28,29] .…”

Section: 引言unclassified

In SituObservation and Mechanism Investigation of Lattice Breathing in Vanadium Oxide Cathode

Zhang¹,

Xiong²,

Pan³

et al. 2016

Acta Chim. Sinica

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As cathode materials in lithium-ion batteries, layered vanadium oxides have been extensively studied and used in many aspects varying from industrial production to our daily life, due to their excellent physical property and gorgeous lithium storage performance. During lithiation/delithiation, layered vanadium oxides such as V 2 O 5 xerogel (with a bilayer structure), undergoes "lattice breathing" which leads to the deactivation of electrode materials and fast capacity fading, which limits its large-scale application. In this work, VO x is used as the cathode material of lithium-ion batteries to study the "lattice breathing" phenomenon. The phase evolution has been observed and studied via in situ method. The X-ray diffraction (XRD) patterns show typical (001) diffraction peaks characteristic of vanadium oxide xerogel structure and also confirm the good crystallinity. This compound with crystal parameters of a＝4.56 Å, b＝14.87 Å, c＝12.38 Å, α＝117.26°, β＝96.02°, γ＝ 81.86°, forms a triclinic structure. Results of scanning electron microscope (SEM) and transmission electron microscope (TEM) further verify the layered structure of VO x . The thermo gravimetric analysis (TGA) at air and nitrogen atmosphere shows that the carbon content of the sample is about 2.4 wt% and the water content is about 2.1%. As lithium-ion battery cathode the initial discharge capacity of the compound is about 136 mA•h/g at a current density of 100 mA/g, with a capacity retention of 92.6% after 50 cycles. To study the lithium storage mechanism of VO x , electrochemical discharge/charge processes are further investigated by in situ XRD. It is found that the lattice plane diffraction displays three different stages linked during the insertion and deinsertion of lithium ions, indicating three solid solution reactions. During discharge process, the three diffraction changes show continuous shifts to higher diffraction angles, demonstrating three different continuous contraction processes with the insertion of lithium ions. Nevertheless, the evolution of the (001) peak is swift during the beginning and the end of discharge, in contrast to the slow deviation of the intermediate process. In the whole process, the diffraction pattern displays periodic changes, confirming the reversibility of the reaction process. The corresponding calculations of d 001 during the discharge/charge process prove the notable discontinuity between these three stages. In addition, cycling experiments conducted at the higher and the lower temperature indicate that the electrochemical performance of this compound is highly sensitive to temperature.

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Hydrated vanadium pentoxide with superior sodium storage capacity

Abstract: The V2O5·nH2O xerogel composed of thin acicular interconnected nanowire networks has been synthesized via a facile freeze-drying process and exhibits superior sodium storage capacity.

Cited by 194 publications

References 42 publications

Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery

Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery

Nanostructured layered vanadium oxide as cathode for high-performance sodium-ion batteries: a perspective

In SituObservation and Mechanism Investigation of Lattice Breathing in Vanadium Oxide Cathode

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Hydrated vanadium pentoxide with superior sodium storage capacity

Abstract: The V2O5·nH2O xerogel composed of thin acicular interconnected nanowire networks has been synthesized via a facile freeze-drying process and exhibits superior sodium storage capacity.

Cited by 194 publications

References 42 publications

Exploring the Low Voltage Behavior of V2O5Aerogel as Intercalation Host for Sodium Ion Battery

Exploring the Low Voltage Behavior of V2O5Aerogel as Intercalation Host for Sodium Ion Battery

Nanostructured layered vanadium oxide as cathode for high-performance sodium-ion batteries: a perspective

In SituObservation and Mechanism Investigation of Lattice Breathing in Vanadium Oxide Cathode

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Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery

Exploring the Low Voltage Behavior of V₂O₅Aerogel as Intercalation Host for Sodium Ion Battery