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Title: A sodium–aluminum hybrid battery

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/C7TA00191F· OSTI ID:1352758
ORCiD logo [1];  [2];  [3];  [1];  [4];  [2];  [5]; ORCiD logo [6]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
  2. University of Chinese Academy of Sciences, Beijing (China). Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, School of Physical Sciences
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Northeast Normal University (China). Department of Chemistry
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division ; Univ. of Tennessee, Knoxville, TN (United States). Department of Chemistry
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division ; Univ. of Tennessee, Knoxville, TN (United States). Department of Chemistry

We present novel hybrid batteries that are fabricated using an aluminum anode, a sodium intercalation cathode Na3V2(PO4)3 (NVP), and a sodium/aluminum dual salt electrolyte based on NaAlCl4 and an eutectic mixture of 1-ethyl-3-methylimidazolium chloride (EMImC) and aluminum chloride. Cyclic voltammograms indicate that increasing the molar concentration of AlCl3 in the electrolyte is beneficial to high coulombic efficiency of aluminum deposition/stripping, which, unfortunately, results in lower coulombic efficiency of sodium extraction/insertion in the cathode. Therefore, EMImC–AlCl3 with a molar ratio of 1–1.1 is used for battery evaluation. The hybrid battery with 1.0 M NaAlCl4 exhibits a discharge voltage of 1.25 V and a cathodic capacity of 99 mA h g-1 at a current rate of C/10. In addition, the hybrid battery exhibits good rate performance and long-term cycling stability while maintaining a high coulombic efficiency of 98%. It is also demonstrated that increasing salt concentration can further enhance the cycling performance of the hybrid battery. X-ray diffraction analysis of the NVP electrodes under different conditions confirms that the main cathode reaction is indeed Na extraction/insertion. Based on all earth-abundant elements, the new Na–Al hybrid battery is very attractive for stationary and grid energy storage applications.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1352758
Journal Information:
Journal of Materials Chemistry. A, Vol. 5, Issue 14; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (8)

Emerging Nonaqueous Aluminum-Ion Batteries: Challenges, Status, and Perspectives journal June 2018
Paving the Path toward Reliable Cathode Materials for Aluminum-Ion Batteries journal February 2019
Recent Progress in Graphite Intercalation Compounds for Rechargeable Metal (Li, Na, K, Al)-Ion Batteries journal June 2017
Fast Diffusion of Multivalent Ions Facilitated by Concerted Interactions in Dual-Ion Battery Systems journal August 2018
Die wiederaufladbare Aluminiumbatterie: Möglichkeiten und Herausforderungen journal June 2019
The Rechargeable Aluminum Battery: Opportunities and Challenges journal August 2019
Ion Dynamics in Ionic-Liquid-Based Li-Ion Electrolytes Investigated by Neutron Scattering and Dielectric Spectroscopy journal September 2018
Vanadium-Based Cathode Materials for Rechargeable Multivalent Batteries: Challenges and Opportunities journal June 2018

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