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Title: Sodium iron hexacyanoferrate with high Na content as a Na-rich cathode material for Na-ion batteries

Abstract

Owing to the worldwide abundance and low-cost of Na, room-temperature Na-ion batteries are emerging as attractive energy storage systems for large-scale grids. Increasing the Na content in cathode material is one of the effective ways to achieve high energy density. Prussian blue and its analogues (PBAs) are promising Na-rich cathode materials since they can theoretically store two Na ions per formula. However, increasing the Na content in PBAs cathode materials is a big challenge in the current. Here we show that sodium iron hexacyanoferrate with high Na content could be obtained by simply controlling the reducing agent and reaction atmosphere during synthesis. The Na content can reach as high as 1.63 per formula, which is the highest value for sodium iron hexacyanoferrate. This Na-rich sodium iron hexacyanoferrate demonstrates a high specific capacity of 150 mA h g -1 and remarkable cycling performance with 90% capacity retention after 200 cycles. Furthermore, the Na intercalation/de-intercalation mechanism is systematically studied by in situ Raman, X-ray diffraction and X-ray absorption spectroscopy analysis for the first time. As a result, the Na-rich sodium iron hexacyanoferrate could function as a plenteous Na reservoir and has great potential as a cathode material toward practical Na-ion batteries.

Authors:
 [1];  [2];  [1];  [2];  [1]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1164333
Report Number(s):
BNL-107069-2014-JA
Journal ID: ISSN 1998-0124; VT1201000-05450-1005554
Grant/Contract Number:  
AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Research
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 1998-0124
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; sodium iron hexacyanoferrate; Na rich cathode; sodium-ion batteries; Prussian blue analogues; national synchrotron light source

Citation Formats

You, Ya, Yu, Xi -Qian, Yin, Ya -Xia, Nam, Kyung -Wan, and Guo, Yu -Guo. Sodium iron hexacyanoferrate with high Na content as a Na-rich cathode material for Na-ion batteries. United States: N. p., 2014. Web. doi:10.1007/s12274-014-0588-7.
You, Ya, Yu, Xi -Qian, Yin, Ya -Xia, Nam, Kyung -Wan, & Guo, Yu -Guo. Sodium iron hexacyanoferrate with high Na content as a Na-rich cathode material for Na-ion batteries. United States. doi:10.1007/s12274-014-0588-7.
You, Ya, Yu, Xi -Qian, Yin, Ya -Xia, Nam, Kyung -Wan, and Guo, Yu -Guo. Mon . "Sodium iron hexacyanoferrate with high Na content as a Na-rich cathode material for Na-ion batteries". United States. doi:10.1007/s12274-014-0588-7. https://www.osti.gov/servlets/purl/1164333.
@article{osti_1164333,
title = {Sodium iron hexacyanoferrate with high Na content as a Na-rich cathode material for Na-ion batteries},
author = {You, Ya and Yu, Xi -Qian and Yin, Ya -Xia and Nam, Kyung -Wan and Guo, Yu -Guo},
abstractNote = {Owing to the worldwide abundance and low-cost of Na, room-temperature Na-ion batteries are emerging as attractive energy storage systems for large-scale grids. Increasing the Na content in cathode material is one of the effective ways to achieve high energy density. Prussian blue and its analogues (PBAs) are promising Na-rich cathode materials since they can theoretically store two Na ions per formula. However, increasing the Na content in PBAs cathode materials is a big challenge in the current. Here we show that sodium iron hexacyanoferrate with high Na content could be obtained by simply controlling the reducing agent and reaction atmosphere during synthesis. The Na content can reach as high as 1.63 per formula, which is the highest value for sodium iron hexacyanoferrate. This Na-rich sodium iron hexacyanoferrate demonstrates a high specific capacity of 150 mA h g-1 and remarkable cycling performance with 90% capacity retention after 200 cycles. Furthermore, the Na intercalation/de-intercalation mechanism is systematically studied by in situ Raman, X-ray diffraction and X-ray absorption spectroscopy analysis for the first time. As a result, the Na-rich sodium iron hexacyanoferrate could function as a plenteous Na reservoir and has great potential as a cathode material toward practical Na-ion batteries.},
doi = {10.1007/s12274-014-0588-7},
journal = {Nano Research},
number = 1,
volume = 8,
place = {United States},
year = {Mon Oct 27 00:00:00 EDT 2014},
month = {Mon Oct 27 00:00:00 EDT 2014}
}

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Works referenced in this record:

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