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Molecular Storage of Mg Ions with Vanadium Oxide Nanoclusters Public Deposited

https://ir.library.oregonstate.edu/concern/articles/kw52j992h

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The article is published by Johne Wiley & Sons, Inc. and copyrighted by Wiley-VCH Verlag. It can be found at:  http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291616-3028/

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Abstract
  • Mg batteries have potential advantages in terms of safety, cost, and reliability over existing battery technologies, but their practical implementations are hindered by the lack of amenable high-voltage cathode materials. The development of cathode materials is complicated by limited understandings of the unique divalent Mg²⁺ ion electrochemistry and the interaction/transportation of Mg²⁺ ions with host materials. Here, it is shown that highly dispersed vanadium oxide (V₂O₅) nanoclusters supported on porous carbon frameworks are able to react with Mg²⁺ ions reversibly in electrolytes that are compatible with Mg metal, and exhibit high capacities and good reaction kinetics. They are able to deliver initial capacities exceeding 300 mAh g⁻¹ at 40 mA g⁻¹ in the voltage window of 0.5 to 2.8 V. The combined electron microscope, spectroscopy, and electrochemistry characterizations suggest a surface-controlled pseudocapacitive electrochemical reaction, and may be best described as a molecular energy storage mechanism. This work can provide a new approach of using the molecular mechanism for pseudocapacitive storage of Mg²⁺ for Mg batteries cathode materials.
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  • Cheng, Y., Shao, Y., Raju, V., Ji, X., Mehdi, B. L., Han, K. S., ... & Liu, J. (2016). Molecular Storage of Mg Ions with Vanadium Oxide Nanoclusters. Advanced Functional Materials, 26(20), 3446-3453. doi:10.1002/adfm.201505501
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  • 26
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  • 20
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  • This research was supported by U.S. Department of Energy, Office of Science, Basic Energy Sciences, Division of Material Sciences and Engineering, under Award KC020105-FWP12152. The (S) TEM and NMR studies were supported as part of the Joint Center for Energy Storage Research (JCESR), an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences. (S) TEM, XPS, NMR, and Raman experiments were conducted at the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE's Office of Biological and Environmental Research and located at PNNL. PNNL is operated by Battelle for the Department of Energy under Contract No. DE-AC05-76RLO1830. V.R. and X.J. acknowledge support from the Oregon State University Venture Development Fund.
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  • description.provenance : Submitted by Open Access (openaccess@library.oregonstate.edu) on 2016-07-01T15:34:13Z No. of bitstreams: 2 ChengMolecularStorageofMgIons.pdf: 3033607 bytes, checksum: 2b5e3be7a0e2a6a11216b442086040aa (MD5) ChengMolecularStorageofMgIonsSupportingInfo.pdf: 428699 bytes, checksum: 22447cdca7116a4b5e29c8893c8ff314 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-07-01T15:42:22Z (GMT) No. of bitstreams: 3 krauserp123579389.zip: 3338104 bytes, checksum: 8e924bb0c3602133ba6322765b9a001a (MD5) ChengMolecularStorageofMgIons.pdf: 3033607 bytes, checksum: 2b5e3be7a0e2a6a11216b442086040aa (MD5) ChengMolecularStorageofMgIonsSupportingInfo.pdf: 428699 bytes, checksum: 22447cdca7116a4b5e29c8893c8ff314 (MD5)
  • description.provenance : Made available in DSpace on 2016-07-01T15:42:22Z (GMT). No. of bitstreams: 3 krauserp123579389.zip: 3338104 bytes, checksum: 8e924bb0c3602133ba6322765b9a001a (MD5) ChengMolecularStorageofMgIons.pdf: 3033607 bytes, checksum: 2b5e3be7a0e2a6a11216b442086040aa (MD5) ChengMolecularStorageofMgIonsSupportingInfo.pdf: 428699 bytes, checksum: 22447cdca7116a4b5e29c8893c8ff314 (MD5) Previous issue date: 2016-05-24

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