4.6 Article

Electrochemically stable cathode current collectors for rechargeable magnesium batteries

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 8, Pages 2473-2477

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta15113a

Keywords

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Funding

  1. Pacific Northwest National Laboratory-Directed Research and Development Program (LDRD)
  2. U.S. Department of Energy (DOE), Office of Basic Energy Science (BES), Division of Materials Sciences and Engineering [KC020105-FWP12152]
  3. Department of Energy's Office of Biological and Environmental Research
  4. Department of Energy [DE-AC05-76RL01830]

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Rechargeable magnesium (Mg) batteries are attractive energy storage systems that could yield cost-effective energy solutions. Currently, however, no practical cathode current collector that can withstand more than 2.0 V in Mg2+ electrolytes has been identified; this greatly hinders cathode research. Here we identified that molybdenum (Mo) and tungsten (W) are electrochemically stable (>2.8 V) through formation of passive surface layers. The presented results could have a significant impact on the development of high voltage Mg batteries.

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