In Situ Visualization of Structural Evolution and Fissure Breathing in (De)lithiated H2V3O8 Nanorods

Yi Wu; Xiaoming Xu; Chongyang Zhu; Pengcheng Liu; Shize Yang; Huolin L. Xin; Ran Cai; Libing Yao; Meng Nie; Shuangying Lei; Peng Gao; Litao Sun; Liqiang Mai; Feng Xu

doi:10.1021/acsenergylett.9b01381

In Situ Visualization of Structural Evolution and Fissure Breathing in (De)lithiated H₂V₃O₈ Nanorods

Yi Wu, Xiaoming Xu, Chongyang Zhu, Pengcheng Liu, Shize Yang, Huolin L. Xin, Ran Cai, Libing Yao, Meng Nie, Shuangying Lei, Peng Gao, Litao Sun^*, Liqiang Mai, Feng Xu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Layered H₂V₃O₈ material consisting of V₃O₈ layers features the elastic space for buffering volume change upon repeated ion (de)intercalations. However, its ion transport and phase transformations still remain largely unknown due to lack of direct evidence. Here we employ in situ transmission electron microscopy to revisit this material carefully. Upon lithiation, the localized phase transformation from H₂V₃O₈ to V₂O₃ via an intermediate VO₂ phase was observed, and large structural fissures gradually formed. Unexpectedly, the large fissures were able to self-heal during delithiation with the VO₂ phase as the delithiated product. The fissures could appear and disappear alternately upon subsequent (de)lithiation, in which a stable and reversible phase transformation between V₂O₃ and VO₂ phases was established. These unreported findings are expected to call for renewed attention to this electrode material for a more comprehensive understanding in rechargeable metal-ion batteries.

Original language	English
Pages (from-to)	2081-2090
Number of pages	10
Journal	ACS Energy Letters
Volume	4
Issue number	9
DOIs	https://doi.org/10.1021/acsenergylett.9b01381
Publication status	Published - 13 Sept 2019
Externally published	Yes

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@article{2ff902f1b6f64e8b834f59793bbc4a6b,

title = "In Situ Visualization of Structural Evolution and Fissure Breathing in (De)lithiated H2V3O8 Nanorods",

abstract = "Layered H2V3O8 material consisting of V3O8 layers features the elastic space for buffering volume change upon repeated ion (de)intercalations. However, its ion transport and phase transformations still remain largely unknown due to lack of direct evidence. Here we employ in situ transmission electron microscopy to revisit this material carefully. Upon lithiation, the localized phase transformation from H2V3O8 to V2O3 via an intermediate VO2 phase was observed, and large structural fissures gradually formed. Unexpectedly, the large fissures were able to self-heal during delithiation with the VO2 phase as the delithiated product. The fissures could appear and disappear alternately upon subsequent (de)lithiation, in which a stable and reversible phase transformation between V2O3 and VO2 phases was established. These unreported findings are expected to call for renewed attention to this electrode material for a more comprehensive understanding in rechargeable metal-ion batteries.",

author = "Yi Wu and Xiaoming Xu and Chongyang Zhu and Pengcheng Liu and Shize Yang and Xin, {Huolin L.} and Ran Cai and Libing Yao and Meng Nie and Shuangying Lei and Peng Gao and Litao Sun and Liqiang Mai and Feng Xu",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = sep,

day = "13",

doi = "10.1021/acsenergylett.9b01381",

language = "English",

volume = "4",

pages = "2081--2090",

journal = "ACS Energy Letters",

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T1 - In Situ Visualization of Structural Evolution and Fissure Breathing in (De)lithiated H2V3O8 Nanorods

AU - Wu, Yi

AU - Xu, Xiaoming

AU - Zhu, Chongyang

AU - Liu, Pengcheng

AU - Yang, Shize

AU - Xin, Huolin L.

AU - Cai, Ran

AU - Yao, Libing

AU - Nie, Meng

AU - Lei, Shuangying

AU - Gao, Peng

AU - Sun, Litao

AU - Mai, Liqiang

AU - Xu, Feng

PY - 2019/9/13

Y1 - 2019/9/13

N2 - Layered H2V3O8 material consisting of V3O8 layers features the elastic space for buffering volume change upon repeated ion (de)intercalations. However, its ion transport and phase transformations still remain largely unknown due to lack of direct evidence. Here we employ in situ transmission electron microscopy to revisit this material carefully. Upon lithiation, the localized phase transformation from H2V3O8 to V2O3 via an intermediate VO2 phase was observed, and large structural fissures gradually formed. Unexpectedly, the large fissures were able to self-heal during delithiation with the VO2 phase as the delithiated product. The fissures could appear and disappear alternately upon subsequent (de)lithiation, in which a stable and reversible phase transformation between V2O3 and VO2 phases was established. These unreported findings are expected to call for renewed attention to this electrode material for a more comprehensive understanding in rechargeable metal-ion batteries.

AB - Layered H2V3O8 material consisting of V3O8 layers features the elastic space for buffering volume change upon repeated ion (de)intercalations. However, its ion transport and phase transformations still remain largely unknown due to lack of direct evidence. Here we employ in situ transmission electron microscopy to revisit this material carefully. Upon lithiation, the localized phase transformation from H2V3O8 to V2O3 via an intermediate VO2 phase was observed, and large structural fissures gradually formed. Unexpectedly, the large fissures were able to self-heal during delithiation with the VO2 phase as the delithiated product. The fissures could appear and disappear alternately upon subsequent (de)lithiation, in which a stable and reversible phase transformation between V2O3 and VO2 phases was established. These unreported findings are expected to call for renewed attention to this electrode material for a more comprehensive understanding in rechargeable metal-ion batteries.

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DO - 10.1021/acsenergylett.9b01381

M3 - Article

AN - SCOPUS:85071268510

SN - 2380-8195

VL - 4

SP - 2081

EP - 2090

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 9

ER -

In Situ Visualization of Structural Evolution and Fissure Breathing in (De)lithiated H₂V₃O₈ Nanorods

Abstract

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