Cited time in webofscience Cited time in scopus

Electrochemical Sodium Ion Intercalation Properties of Na2.7Ru4O9 in Nonaqueous and Aqueous Electrolytes

Electrochemical Sodium Ion Intercalation Properties of Na2.7Ru4O9 in Nonaqueous and Aqueous Electrolytes
Jung, Young HwaHong, Seung-TaeKim, Do Kyung
DGIST Authors
Hong, Seung-Tae
Issued Date
Article Type
This paper represents the first description of the electrochemical sodium ion intercalation properties of Na2.7Ru4O9 in both nonaqueous and aqueous electrolytes. Na2.7Ru4O 9 was synthesized at 700-850°C by solid-state reaction under Ar flow. It has single, double and triple chains of edge-sharing RuO6 octahedra and one-dimensional tunnels between them parallel to the b-axis, accommodating three different sites of Na1, Na2 and Na3. In an organic electrolyte (1 M NaClO4 in PC), Na2.7Ru4O9 shows three redox peaks in its cyclic voltammogram between 2.8 and 3.9 V vs. Na. In an aqueous (1 M Na2SO4) electrolyte, Na2.7Ru 4O9 exhibits three anodic peaks during the first charge, similar to the behavior observed in the organic electrolyte. However, the three peaks become a single broad peak over the following cycles. Electrochemical data and ex-situ XRD results indicate that once Na ions are removed from the Na 2.7Ru4O9 structure containing the maximum amount of sodium, only a portion (<60%) can be re-intercalated and that the aqueous electrolyte allows a lower reversible capacity than the nonaqueous electrolyte. © 2013 The Electrochemical Society. All rights reserved.
Electrochemical Society
Related Researcher
  • 홍승태 Hong, Seung-Tae 에너지공학과
  • Research Interests Magnesium; calcium; and zinc ion batteries; lithium all-solid-state batteries; &#29;Inorganic materials discovery; Solid state chemistry; Crystallography; Mg; Ca; Zn 이온 이차전지; 리튬 전고체전지; 신 무기재료 합성; 고체화학; 결정화학
Files in This Item:

There are no files associated with this item.

Appears in Collections:
Department of Energy Science and Engineering Battery Materials Discovery Laboratory 1. Journal Articles


  • twitter
  • facebook
  • mendeley

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.