Cargando…
Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy
Vanadium sulfide (VS(4)) is one of the promising positive electrode materials for next-generation rechargeable lithium-ion batteries because of its high theoretical capacity (1196 mA h g(−1)). Crystalline VS(4) has a unique structure, in which the Peierls-distorted one-dimensional chains of V–V bond...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9069526/ https://www.ncbi.nlm.nih.gov/pubmed/35530591 http://dx.doi.org/10.1039/c9ra04338a |
_version_ | 1784700450090516480 |
---|---|
author | Shimoda, Keiji Koganei, Kazuto Takeuchi, Tomonari Matsunaga, Toshiyuki Murakami, Miwa Sakaebe, Hikari Kobayashi, Hironori Matsubara, Eiichiro |
author_facet | Shimoda, Keiji Koganei, Kazuto Takeuchi, Tomonari Matsunaga, Toshiyuki Murakami, Miwa Sakaebe, Hikari Kobayashi, Hironori Matsubara, Eiichiro |
author_sort | Shimoda, Keiji |
collection | PubMed |
description | Vanadium sulfide (VS(4)) is one of the promising positive electrode materials for next-generation rechargeable lithium-ion batteries because of its high theoretical capacity (1196 mA h g(−1)). Crystalline VS(4) has a unique structure, in which the Peierls-distorted one-dimensional chains of V–V bonds along the c axis are loosely connected to each other through van der Waals interactions. In this study, an amorphous VS(4) is prepared by mechanical milling of the crystalline material, and its lithiation/delithiation behavior is investigated by solid-state nuclear magnetic resonance (NMR) spectroscopy. The amorphous VS(4) shows a chain structure similar to that of crystalline VS(4). The amorphous host structure is found to change drastically during the lithiation process to form Li(3)VS(4): the V ions become tetrahedrally coordinated by S ions, in which the valence states of V and S ions simultaneously change from V(4+) to V(5+) and S(−) to S(2−), respectively. When the Li insertion proceeds further, the valence state of V ions is reduced. After the 1(st) cycle, the amorphous VS(4) recovers to the chain-like structure although it is highly disordered. No conversion to elemental V is observed, and a high capacity of 700 mA h g(−1) is reversibly delivered between 1.5 and 2.6 V. |
format | Online Article Text |
id | pubmed-9069526 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90695262022-05-05 Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy Shimoda, Keiji Koganei, Kazuto Takeuchi, Tomonari Matsunaga, Toshiyuki Murakami, Miwa Sakaebe, Hikari Kobayashi, Hironori Matsubara, Eiichiro RSC Adv Chemistry Vanadium sulfide (VS(4)) is one of the promising positive electrode materials for next-generation rechargeable lithium-ion batteries because of its high theoretical capacity (1196 mA h g(−1)). Crystalline VS(4) has a unique structure, in which the Peierls-distorted one-dimensional chains of V–V bonds along the c axis are loosely connected to each other through van der Waals interactions. In this study, an amorphous VS(4) is prepared by mechanical milling of the crystalline material, and its lithiation/delithiation behavior is investigated by solid-state nuclear magnetic resonance (NMR) spectroscopy. The amorphous VS(4) shows a chain structure similar to that of crystalline VS(4). The amorphous host structure is found to change drastically during the lithiation process to form Li(3)VS(4): the V ions become tetrahedrally coordinated by S ions, in which the valence states of V and S ions simultaneously change from V(4+) to V(5+) and S(−) to S(2−), respectively. When the Li insertion proceeds further, the valence state of V ions is reduced. After the 1(st) cycle, the amorphous VS(4) recovers to the chain-like structure although it is highly disordered. No conversion to elemental V is observed, and a high capacity of 700 mA h g(−1) is reversibly delivered between 1.5 and 2.6 V. The Royal Society of Chemistry 2019-08-05 /pmc/articles/PMC9069526/ /pubmed/35530591 http://dx.doi.org/10.1039/c9ra04338a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Shimoda, Keiji Koganei, Kazuto Takeuchi, Tomonari Matsunaga, Toshiyuki Murakami, Miwa Sakaebe, Hikari Kobayashi, Hironori Matsubara, Eiichiro Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title | Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title_full | Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title_fullStr | Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title_full_unstemmed | Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title_short | Structural characterization of an amorphous VS(4) and its lithiation/delithiation behavior studied by solid-state NMR spectroscopy |
title_sort | structural characterization of an amorphous vs(4) and its lithiation/delithiation behavior studied by solid-state nmr spectroscopy |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9069526/ https://www.ncbi.nlm.nih.gov/pubmed/35530591 http://dx.doi.org/10.1039/c9ra04338a |
work_keys_str_mv | AT shimodakeiji structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT koganeikazuto structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT takeuchitomonari structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT matsunagatoshiyuki structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT murakamimiwa structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT sakaebehikari structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT kobayashihironori structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy AT matsubaraeiichiro structuralcharacterizationofanamorphousvs4anditslithiationdelithiationbehaviorstudiedbysolidstatenmrspectroscopy |