Lattice Breathing Inhibited Layered Vanadium Oxide Ultrathin Nanobelts for Enhanced Sodium Storage

Wei, Qiulong; Jiang, Zhouyang; Shi, Tan; Li, Qidong; Huang, Lei; Yan, Mengyu; Zhou, Liang; An, Qinyou; Mai, Liqiang

doi:10.1021/acsami.5b06154

Cited by 100 publications

(80 citation statements)

References 38 publications

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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%

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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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Section: Discussionmentioning

confidence: 99%

“…To improve its stability, iron preintercalated vanadium oxide ultrathin nanobelts (Fe-VO x ) with constricted interlayer spacing were fabricated. [43] The electrochemical performances of V 2 O 5 ·nH 2 O have been enhanced via electrolyte optimization [44] or cut-off voltage, [45] even though long-term cycling stability still need to be addressed.…”

Section: +mentioning

confidence: 99%

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

2017

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“…Pre-intercalation of electrochemically inactive iron ions into interlayer space [147] was shown to be an effective approach to stabilize the structure of the electrode during cycling through strong interactions between pre-intercalated ion and V 2 O 5 bilayers. While the absolute capacity value of Fe x V 2 O 5 was significantly lower than that of Na x V 2 O 5 nanowires (the first discharge capacity of Fe x V 2 O 5 was 184 mAh g −1 ), Fe x V 2 O 5 displayed a more stable cycling performance with 80% of capacity maintained after 50 cycles [147].…”

Section: Transition Metal Oxides With Layered Crystal Structuresmentioning

confidence: 99%

Emerging nanostructured electrode materials for water electrolysis and rechargeable beyond Li-ion batteries

Pomerantseva

Resini

Kovnir

et al. 2017

Advances in Physics: X

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This review describes recent advances in electrochemical water electrolysis and rechargeable beyond Li-ion battery research, two emergent and widely employed technologies playing important roles in clean energy production and storage. The principle components of these electrochemical processes are electrode materials, which are currently facing challenges in performance improvement, thus motivating the development of novel electrode materials. This development requires synergistic interactions between experimentalists and theorists with backgrounds in solid state chemistry, condensed matter physics, and materials science and engineering. In light of a large amount of literature covering the topic, we will focus this review on the seminal electrode materials that have been discovered in the last five years, such as transition metal chalcogenides, carbides, and phosphides, as well as 2D layered materials. Intensive cross-disciplinary research is also dedicated to nanostructuring and hybridization of the emerging electrode materials in order to maximize the efficiency and simultaneously to lower the cost of the processes. As the understanding of the nanoscale-related effects deepens, it opens important pathways to the discovery of further materials and their improvement.

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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

“…最近, 我们课题组报道了一种层状钒氧化物(VO x ), 并发现 VO x 在离子脱嵌过程中伴随明显的"晶格呼吸"现象 [26] . Figure 3 Cycling performance of VO x electrode 衍射峰的轮廓线清楚地显示了在电流密度为 100 mA/g 时充放电过程中的相变过程.…”

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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Lattice Breathing Inhibited Layered Vanadium Oxide Ultrathin Nanobelts for Enhanced Sodium Storage

Cited by 100 publications

References 38 publications

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

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

Emerging nanostructured electrode materials for water electrolysis and rechargeable beyond Li-ion batteries

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

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