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Title: A novel high capacity positive electrode material with tunnel-type structure for aqueous sodium-ion batteries

In this study, aqueous sodium-ion batteries have shown desired properties of high safety characteristics and low-cost for large-scale energy storage applications such as smart grid, because of the abundant sodium resources as well as the inherently safer aqueous electrolytes. Among various Na insertion electrode materials, tunnel-type Na 0.44MnO 2 has been widely investigated as a positive electrode for aqueous sodium-ion batteries. However, the low achievable capacity hinders its practical applications. Here we report a novel sodium rich tunnel-type positive material with a nominal composition of Na 0.66[Mn 0.66Ti 0.34]O 2. The tunnel-type structure of Na 0.44MnO 2 obtained for this compound was confirmed by XRD and atomic-scale STEM/EELS. When cycled as positive electrode in full cells using NaTi 2(PO 4) 3/C as negative electrode in 1M Na 2SO 4 aqueous electrolyte, this material shows the highest capacity of 76 mAh g -1 among the Na insertion oxides with an average operating voltage of 1.2 V at a current rate of 2C. These results demonstrate that Na 0.66[Mn 0.66Ti 0.34]O 2 is a promising positive electrode material for rechargeable aqueous sodium-ion batteries.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Collaborative Innovation Center of Quantum Matter, Beijing (China); Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
Report Number(s):
BNL-108337-2015-JA
Journal ID: ISSN 1614-6840; VT1201000
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials (Online)
Additional Journal Information:
Journal Name: Advanced Energy Materials (Online); Journal ID: ISSN 1614-6840
Publisher:
Wiley
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; National Synchrotron Light Source; aqueous sodium ion battery; energy storage; positive electrode; tunnel-type structure
OSTI Identifier:
1214527

Wang, Yuesheng, Mu, Linqin, Liu, Jue, Yang, Zhenzhong, Yu, Xiqian, Gu, Lin, Hu, Yong -Sheng, Li, Hong, Yang, Xiao -Qing, Chen, Liquan, and Huang, Xuejie. A novel high capacity positive electrode material with tunnel-type structure for aqueous sodium-ion batteries. United States: N. p., Web. doi:10.1002/aenm.201501005.
Wang, Yuesheng, Mu, Linqin, Liu, Jue, Yang, Zhenzhong, Yu, Xiqian, Gu, Lin, Hu, Yong -Sheng, Li, Hong, Yang, Xiao -Qing, Chen, Liquan, & Huang, Xuejie. A novel high capacity positive electrode material with tunnel-type structure for aqueous sodium-ion batteries. United States. doi:10.1002/aenm.201501005.
Wang, Yuesheng, Mu, Linqin, Liu, Jue, Yang, Zhenzhong, Yu, Xiqian, Gu, Lin, Hu, Yong -Sheng, Li, Hong, Yang, Xiao -Qing, Chen, Liquan, and Huang, Xuejie. 2015. "A novel high capacity positive electrode material with tunnel-type structure for aqueous sodium-ion batteries". United States. doi:10.1002/aenm.201501005. https://www.osti.gov/servlets/purl/1214527.
@article{osti_1214527,
title = {A novel high capacity positive electrode material with tunnel-type structure for aqueous sodium-ion batteries},
author = {Wang, Yuesheng and Mu, Linqin and Liu, Jue and Yang, Zhenzhong and Yu, Xiqian and Gu, Lin and Hu, Yong -Sheng and Li, Hong and Yang, Xiao -Qing and Chen, Liquan and Huang, Xuejie},
abstractNote = {In this study, aqueous sodium-ion batteries have shown desired properties of high safety characteristics and low-cost for large-scale energy storage applications such as smart grid, because of the abundant sodium resources as well as the inherently safer aqueous electrolytes. Among various Na insertion electrode materials, tunnel-type Na0.44MnO2 has been widely investigated as a positive electrode for aqueous sodium-ion batteries. However, the low achievable capacity hinders its practical applications. Here we report a novel sodium rich tunnel-type positive material with a nominal composition of Na0.66[Mn0.66Ti0.34]O2. The tunnel-type structure of Na0.44MnO2 obtained for this compound was confirmed by XRD and atomic-scale STEM/EELS. When cycled as positive electrode in full cells using NaTi2(PO4)3/C as negative electrode in 1M Na2SO4 aqueous electrolyte, this material shows the highest capacity of 76 mAh g-1 among the Na insertion oxides with an average operating voltage of 1.2 V at a current rate of 2C. These results demonstrate that Na0.66[Mn0.66Ti0.34]O2 is a promising positive electrode material for rechargeable aqueous sodium-ion batteries.},
doi = {10.1002/aenm.201501005},
journal = {Advanced Energy Materials (Online)},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {8}
}