DataVXACS Energy LettersPaper
journal article·2019-07-12Open access

Intercalation of Magnesium into a Layered Vanadium Oxide with High Capacity

Hyun Deog Yoo, Jacob R. Jokisaari, Young-Sang Yu, Bob Jin Kwon, Linhua Hu, Soojeong Kim, Sang-Don Han, Mario Lopez, Saul H. Lapidus, Gene M. Nolis, Brian J. Ingram, Igor Bolotin, Shabbir Ahmed, Robert F. Klie, John T. Vaughey, Timothy T. Fister, Jordi Cabana

ACS Energy Letters· Volume 4· Issue 7
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Source abstract

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.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Transition Metal Oxide Nanomaterials · Catalysis and Oxidation Reactions · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States

Joint Center for Energy Storage Research, Argonne National Laboratory, Argonne, Illinois 60439, United States

Department of Chemistry and Chemical Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea

Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, United States

Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, California 94720, United States

Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States

X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States

Funding

National Research Foundation · National Science Foundation · U.S. Department of Energy

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