Lithium-Containing Hybrid SEI Layer Enabling High Mass Loading and Anode-Less Sodium Metal Batteries - Details

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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).　©　2025　The　Author(s).　Angewandte　Chemie　International　Edition　published　by　Wiley-VCH　GmbH.

Keyword：

Diffusion kinetic High mass loading Low N/P ratio Sodium deposition behavior Sodium metal anode

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[ 1 ] [Xia L.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 2 ] [Lin L.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 3 ] [Li J.]Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, 60439, IL, United States
[ 4 ] [Zhang Y.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 5 ] [Zheng H.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 6 ] [Chang X.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 7 ] [Liang J.]Contemporary Amperex Technology Co., Ltd, Ningde, 352100, China
[ 8 ] [Sa B.]Multiscale Computational Materials Facility, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, China
[ 9 ] [Wang L.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 10 ] [Lin J.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 11 ] [Peng D.-L.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China
[ 12 ] [Amine K.]Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, 60439, IL, United States
[ 13 ] [Amine K.]Pritzker School of Molecular Engineering, The University of Chicago, Chicago, 60637, IL, United States
[ 14 ] [Xie Q.]State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Xiamen University, Xiamen, 361005, China

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Lithium-Containing Hybrid SEI Layer Enabling High Mass Loading and Anode-Less Sodium Metal Batteries
2025，ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

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Angewandte Chemie - International Edition

ISSN： 1433-7851

Year： 2025

1 6 . 1 0 0

JCR@2023

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