Lithium‐Containing Hybrid SEI Layer Enabling High Mass Loading and Anode‐Less Sodium Metal Batteries
Journal Article
·
· Angewandte Chemie (International Edition)
- Xiamen Univ. (China)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Contemporary Amperex Technology Co., Ltd., Ningde (China)
- Fuzhou Univ. (China)
- Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Chicago, IL (United States)
The continuous rupturing and rebuilding of unstable solid electrolyte interphase (SEI) layer during cycling would block Na+ diffusion and induce Na dendrite formation, ultimately limiting the practical application of high-energy-density sodium metal batteries. Herein, a hybrid SEI layer containing Li-species is dexterously constructed on the surface of sodium metal anode. Li-containing inorganic components (Li3N, LiF, and Li2CO3) are introduced to stabilize the Na/electrolyte interface and enhance the mechanical and diffusion kinetic properties of the SEI layer, which can reduce the side reactions and gas generation, regulate Na+ flux during cycling and promote rapid Na+ migration for uniform dendrite-free Na deposition. As a result, the constructed Na symmetric cells achieve low overpotential and long cycle life of 5900, 1800, and 500 h at current densities of 3, 10, and 30 mA cm−2, respectively. Furthermore, the full cells paired with the Na₃V₂(PO₄)₃ cathode demonstrate high specific capacity and excellent cycle stability, even at an ultra-high cathode loading of 39.3 mg cm−2 and a low N/P ratio (negative/positive electrode capacity ratio of 1.21).
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 2545120
- Alternate ID(s):
- OSTI ID: 2566927
OSTI ID: 3006333
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 21 Vol. 64; ISSN 1521-3773; ISSN 1433-7851
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Lithium‐Containing Hybrid SEI Layer Enabling High Mass Loading and Anode‐Less Sodium Metal Batteries
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Sun Mar 30 20:00:00 EDT 2025
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OSTI ID:2545138