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

Journal Article · · Nature Communications

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.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
European Research Council (ERC); German Research Foundation (DFG); Alexander von Humboldt Foundation; China Scholarship Council (CSC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Agence Nationale de la Recherché (ANR)
Grant/Contract Number:
819698; AC02-07CH11358; GrapheneCore2 785219
OSTI ID:
1606537
Report Number(s):
IS-J-10182
Journal Information:
Nature Communications, Vol. 11, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 91 works
Citation information provided by
Web of Science

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α-MoO3- by plasma etching with improved capacity and stabilized structure for lithium storage journal July 2018
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MoO 3– x Nanowire Arrays As Stable and High-Capacity Anodes for Lithium Ion Batteries journal January 2012
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Advanced rechargeable aluminium ion battery with a high-quality natural graphite cathode journal February 2017
Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling journal April 2015
A high-capacity and long-life aqueous rechargeable zinc battery using a metal oxide intercalation cathode journal August 2016
Efficient storage mechanisms for building better supercapacitors journal May 2016
Oxygen vacancies enhance pseudocapacitive charge storage properties of MoO3−x journal December 2016
Ultrahigh-power micrometre-sized supercapacitors based on onion-like carbon journal August 2010
High-energy-density dual-ion battery for stationary storage of electricity using concentrated potassium fluorosulfonylimide journal October 2018
Reversible calcium alloying enables a practical room-temperature rechargeable calcium-ion battery with a high discharge voltage journal April 2018
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Multi-site electrocatalysts for hydrogen evolution in neutral media by destabilization of water molecules journal December 2018
Influences from solvents on charge storage in titanium carbide MXenes journal March 2019
Some electronic properties of the molybdenum bronzes journal January 1968
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Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide journal September 2013