Interlayer gap widened α-phase molybdenum trioxide as high-rate anodes for dual-ion-intercalation energy storage devices

Yu M, Shao H, Wang G, Yang F, Liang C, Rozier P, Wang CZ, Lu X, Simon P, Feng X (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 11

Article Number: 1348

Journal Issue: 1

DOI: 10.1038/s41467-020-15216-w

Abstract

Employing high-rate ion-intercalation electrodes represents a feasible way to mitigate the inherent trade-off between energy density and power density for electrochemical energy storage devices, but efficient approaches to boost the charge-storage kinetics of electrodes are still needed. Here, we demonstrate a water-incorporation strategy to expand the interlayer gap of α-MoO3, in which water molecules take the place of lattice oxygen of α-MoO3. Accordingly, the modified α-MoO3 electrode exhibits theoretical-value-close specific capacity (963 C g−1 at 0.1 mV s−1), greatly improved rate capability (from 4.4% to 40.2% at 100 mV s−1) and boosted cycling stability (from 21 to 71% over 600 cycles). A fast-kinetics dual-ion-intercalation energy storage device is further assembled by combining the modified α-MoO3 anode with an anion-intercalation graphite cathode, operating well over a wide discharge rate range. Our study sheds light on a promising design strategy of layered materials for high-kinetics charge storage.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Université Fédérale de Toulouse Midi-Pyrénées FR France (FR) Sun Yat-Sen University CN China (CN) Iowa State University of Science and Technology (ISU) US United States (USA) (US)

How to cite

APA:

Yu, M., Shao, H., Wang, G., Yang, F., Liang, C., Rozier, P.,... Feng, X. (2020). Interlayer gap widened α-phase molybdenum trioxide as high-rate anodes for dual-ion-intercalation energy storage devices. Nature Communications, 11(1). https://doi.org/10.1038/s41467-020-15216-w

MLA:

Yu, Minghao, et al. "Interlayer gap widened α-phase molybdenum trioxide as high-rate anodes for dual-ion-intercalation energy storage devices." Nature Communications 11.1 (2020).

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