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    Tunable Reaction Potentials in Open Framework Nanoparticle Battery Electrodes for Grid-Scale Energy Storage

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    Type
    Article
    Authors
    Wessells, Colin D.
    McDowell, Matthew T.
    Peddada, Sandeep V.
    Pasta, Mauro
    Huggins, Robert A.
    Cui, Yi cc
    KAUST Grant Number
    KUS-I1-001-12
    Date
    2012-02-06
    Online Publication Date
    2012-02-06
    Print Publication Date
    2012-02-28
    Permanent link to this record
    http://hdl.handle.net/10754/600091
    
    Metadata
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    Abstract
    The electrical energy grid has a growing need for energy storage to address short-term transients, frequency regulation, and load leveling. Though electrochemical energy storage devices such as batteries offer an attractive solution, current commercial battery technology cannot provide adequate power, and cycle life, and energy efficiency at a sufficiently low cost. Copper hexacyanoferrate and nickel hexacyanoferrate, two open framework materials with the Prussian Blue structure, were recently shown to offer ultralong cycle life and high-rate performance when operated as battery electrodes in safe, inexpensive aqueous sodium ion and potassium ion electrolytes. In this report, we demonstrate that the reaction potential of copper-nickel alloy hexacyanoferrate nanoparticles may be tuned by controlling the ratio of copper to nickel in these materials. X-ray diffraction, TEM energy dispersive X-ray spectroscopy, and galvanostatic electrochemical cycling of copper-nickel hexacyanoferrate reveal that copper and nickel form a fully miscible solution at particular sites in the framework without perturbing the structure. This allows copper-nickel hexacyanoferrate to reversibly intercalate sodium and potassium ions for over 2000 cycles with capacity retentions of 100% and 91%, respectively. The ability to precisely tune the reaction potential of copper-nickel hexacyanoferrate without sacrificing cycle life will allow the development of full cells that utilize the entire electrochemical stability window of aqueous sodium and potassium ion electrolytes. © 2012 American Chemical Society.
    Citation
    Wessells CD, McDowell MT, Peddada SV, Pasta M, Huggins RA, et al. (2012) Tunable Reaction Potentials in Open Framework Nanoparticle Battery Electrodes for Grid-Scale Energy Storage. ACS Nano 6: 1688–1694. Available: http://dx.doi.org/10.1021/nn204666v.
    Sponsors
    The authors acknowledge support from the King Abdullah University of Science and Technology (KAUST) Investigator Award (No. KUS-I1-001-12). They also acknowledge the Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under contract DE-AC02-76SF00515 through the SLAC National Accelerator Laboratory LDRD project.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Nano
    DOI
    10.1021/nn204666v
    PubMed ID
    22283739
    ae974a485f413a2113503eed53cd6c53
    10.1021/nn204666v
    Scopus Count
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