A Hybrid Mg2+/Li+ Battery Based on Interlayer-Expanded MoS2/Graphene Cathode
Article
Fan, Xin, Gaddam, Rohit Ranganathan, Kumar, Nanjundan Ashok and Zhao, Xiu Song. 2017. "A Hybrid Mg2+/Li+ Battery Based on Interlayer-Expanded MoS2/Graphene Cathode." Advanced Energy Materials. 7 (19). https://doi.org/10.1002/aenm.201700317
Article Title | A Hybrid Mg2+/Li+ Battery Based on Interlayer-Expanded MoS2/Graphene Cathode |
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ERA Journal ID | 200105 |
Article Category | Article |
Authors | Fan, Xin, Gaddam, Rohit Ranganathan, Kumar, Nanjundan Ashok and Zhao, Xiu Song |
Journal Title | Advanced Energy Materials |
Journal Citation | 7 (19) |
Number of Pages | 10 |
Year | 2017 |
Publisher | John Wiley & Sons |
Place of Publication | Germany |
ISSN | 1614-6832 |
1614-6840 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/aenm.201700317 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/aenm.201700317 |
Abstract | The hybrid Mg2+/Li+ battery (MLIB) is a very promising energy storage technology that combines the advantage of the Li and Mg electrochemistry. However, previous research has shown that the battery performance is limited due to the strong dependence on the Li content in the dual Mg2+/Li+ electrolyte. This limitation can be circumvented by significantly improving the diffusion kinetics of Mg2+ in the electrode, so that both Li+ and Mg2+ ions can be utilized as charge carriers. Herein, a free-standing interlayer expanded MoS2/graphene composite (E-MG) is demonstrated as a cathode for MLIB. The key advantage of this cathode is to enable the efficient intercalation of both Mg2+ and Li+. The E-MG electrode displays a reversible capacity of ≈300 mA h g−1 at 20 mA g−1 in an MLIB cell, corresponding to a specific energy density up to ≈316.9 W h kg−1, which is comparable to that of the state-of-the-art Li-ion batteries (LIBs) and has no dendrite formation. The composite electrode is stable against cycling with a coulombic efficiency close to 100% at 500 mA g−1. This new electrode design represents a significant step forward for building a safe and high-density electrochemical energy storage system. |
Keywords | energy density |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 3402. Inorganic chemistry |
340604. Electrochemistry | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
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