Intercalation of Magnesium into a Layered Vanadium Oxide with High Capacity. Yoo, H. D., Jokisaari, J. R., Yu, Y., Kwon, B. J., Hu, L., Kim, S., Han, S., Lopez, M., Lapidus, S. H., Nolis, G. M., Ingram, B. J., Bolotin, I., Ahmed, S., Klie, R. F., Vaughey, J. T., Fister, T. T., & Cabana, J. ACS Energy Letters, 4(7):1528–1534, July, 2019. Publisher: American Chemical Society![Intercalation of Magnesium into a Layered Vanadium Oxide with High Capacity [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex While α-V2O5 has traditionally been considered as a promising oxide to reversibly intercalate high levels of Mg2+ at high potential, recent reports indicate that previously observed electrochemical activity is dominated by intercalation of H+ rather than Mg2+, even in moderately dry nonaqueous electrolytes. Consequently, the inherent functionality of oxides to intercalate Mg2+ remains in question. By conducting electrochemistry in a chemically and anodically stable ionic liquid electrolyte, we report that, at 110 °C, layered α-V2O5 is indeed capable of reversibly intercalating 1 mol Mg2+ per unit formula, to accumulate capacities above 280 mAh g–1. Multimodal characterization confirmed intercalation of Mg2+ by probing the elemental, redox, and morphological changes undergone by the oxide. After cycling at 110 °C, the electrochemical activity at room temperature was significantly enhanced. The results renew prospects for functional Mg rechargeable batteries surpassing the levels of energy density of current Li-ion batteries.
@article{yoo_intercalation_2019-1,
title = {Intercalation of {Magnesium} into a {Layered} {Vanadium} {Oxide} with {High} {Capacity}},
volume = {4},
url = {https://doi.org/10.1021/acsenergylett.9b00788},
doi = {10.1021/acsenergylett.9b00788},
abstract = {While α-V2O5 has traditionally been considered as a promising oxide to reversibly intercalate high levels of Mg2+ at high potential, recent reports indicate that previously observed electrochemical activity is dominated by intercalation of H+ rather than Mg2+, even in moderately dry nonaqueous electrolytes. Consequently, the inherent functionality of oxides to intercalate Mg2+ remains in question. By conducting electrochemistry in a chemically and anodically stable ionic liquid electrolyte, we report that, at 110 °C, layered α-V2O5 is indeed capable of reversibly intercalating 1 mol Mg2+ per unit formula, to accumulate capacities above 280 mAh g–1. Multimodal characterization confirmed intercalation of Mg2+ by probing the elemental, redox, and morphological changes undergone by the oxide. After cycling at 110 °C, the electrochemical activity at room temperature was significantly enhanced. The results renew prospects for functional Mg rechargeable batteries surpassing the levels of energy density of current Li-ion batteries.},
number = {7},
urldate = {2021-10-11},
journal = {ACS Energy Letters},
author = {Yoo, Hyun Deog and Jokisaari, Jacob R. and Yu, Young-Sang and Kwon, Bob Jin and Hu, Linhua and Kim, Soojeong and Han, Sang-Don and Lopez, Mario and Lapidus, Saul H. and Nolis, Gene M. and Ingram, Brian J. and Bolotin, Igor and Ahmed, Shabbir and Klie, Robert F. and Vaughey, John T. and Fister, Timothy T. and Cabana, Jordi},
month = jul,
year = {2019},
note = {Publisher: American Chemical Society},
pages = {1528--1534},
}
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Consequently, the inherent functionality of oxides to intercalate Mg2+ remains in question. By conducting electrochemistry in a chemically and anodically stable ionic liquid electrolyte, we report that, at 110 °C, layered α-V2O5 is indeed capable of reversibly intercalating 1 mol Mg2+ per unit formula, to accumulate capacities above 280 mAh g–1. Multimodal characterization confirmed intercalation of Mg2+ by probing the elemental, redox, and morphological changes undergone by the oxide. After cycling at 110 °C, the electrochemical activity at room temperature was significantly enhanced. 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Consequently, the inherent functionality of oxides to intercalate Mg2+ remains in question. By conducting electrochemistry in a chemically and anodically stable ionic liquid electrolyte, we report that, at 110 °C, layered α-V2O5 is indeed capable of reversibly intercalating 1 mol Mg2+ per unit formula, to accumulate capacities above 280 mAh g–1. Multimodal characterization confirmed intercalation of Mg2+ by probing the elemental, redox, and morphological changes undergone by the oxide. After cycling at 110 °C, the electrochemical activity at room temperature was significantly enhanced. 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