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Lee, Hyun-Wook
Energy Storage and Electron Microscopy Laboratory
Research Interests
  • Energy storage, secondary batteries, transmission electron microscopy, real time analysis

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Manganese hexacyanomanganate open framework as a high-capacity positive electrode material for sodium-ion batteries

Cited 21 times inthomson ciCited 24 times inthomson ci
Title
Manganese hexacyanomanganate open framework as a high-capacity positive electrode material for sodium-ion batteries
Author
Lee, Hyun-WookWang, Richard Y.Pasta, MauroLee, Seok WooLiu, NianCui, Yi
Keywords
LONG CYCLE LIFE; PRUSSIAN BLUE STRUCTURES; ENERGY-STORAGE; HEXACYANOFERRATE; CATHODE; LITHIUM; STABILITY; CYANIDE
Issue Date
2014-10
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.5, no., pp.5280 -
Abstract
Potential applications of sodium-ion batteries in grid-scale energy storage, portable electronics and electric vehicles have revitalized research interest in these batteries. However, the performance of sodium-ion electrode materials has not been competitive with that of lithium-ion electrode materials. Here we present sodium manganese hexacyanomanganate (Na2MnII[Mn-II(CN)(6)]), an open-framework crystal structure material, as a viable positive electrode for sodium-ion batteries. We demonstrate a high discharge capacity of 209 mAh g(-1) at C/5 (40 mA g(-1)) and excellent capacity retention at high rates in a propylene carbonate electrolyte. We provide chemical and structural evidence for the unprecedented storage of 50% more sodium cations than previously thought possible during electrochemical cycling. These results represent a step forward in the development of sodium-ion batteries.
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DOI
10.1038/ncomms6280
ISSN
2041-1723
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ECHE_Journal Papers
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