Journal
ELECTROCHEMISTRY
Volume 82, Issue 10, Pages 909-911Publisher
ELECTROCHEMICAL SOC JAPAN
DOI: 10.5796/electrochemistry.82.909
Keywords
Sodium Intercalation; Cobalt Fluorophosphate; Sodium Batteries
Categories
Funding
- JSPS through the Funding for NEXT Program,
- MEXT program Elements Strategy Initiative to Form Core Research Center, MEXT
- Ministry of Education Culture, Sports, Science and Technology, Japan
- JASRI as Nanotechnology Support Project of MEXT [2012B1777, 2013A1681/BL02B2]
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A sodium-containing layered cobalt fluorophosphate, Na2CoPO4F, is prepared by a solid-state method. Electrode performance of the Na2CoPO4F is first examined as a positive electrode material for non-aqueous Na batteries. The carbon-modified Na2CoPO4F delivers 100 mAh g(-1) of initial discharge capacity with a nearly flat voltage plateau at approximately 4.3V vs. Na metal. The estimated energy density as a positive electrode material reaches 407 Wh kg(-1) based on metallic sodium. Na2CoPO4F exhibits the highest operating voltage in a series of Na2MePO4F (Me = Fe, Co, and Mn). (C) The Electrochemical Society of Japan, All rights reserved.
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