4.7 Article

The first Fe-based Na+-ion cathode with two distinct types of polyanions: Fe3P5SiO19

Journal

CHEMICAL COMMUNICATIONS
Volume 51, Issue 52, Pages 10447-10450

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc03070f

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Funding

  1. National Science Foundation Materials Interdisciplinary Research Team (MIRT) [DMR-1122603]
  2. Welch Foundation [F-1254]
  3. Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy

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Herein, we report the synthesis, structure, and electrochemistry of the first Na+-ion cathode with two distinct types of polyanions: Fe3P5SiO19. The Fe-based cathode has a reversible capacity of ca. 70 mA h g(-1); ca. 1.7 Na+ ions per formula can be inserted/extracted at an average voltage of 2.5 V versus Na+/Na.

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