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Related Concept Videos

Alkali Metals03:06

Alkali Metals

24.1K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
24.1K
Electrodeposition01:08

Electrodeposition

1.2K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
1.2K
Metal-Ligand Bonds02:51

Metal-Ligand Bonds

23.9K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
23.9K

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Reactivity-Driven Metal-Adaptive Interphases for Dendrite-Free, High-Rate Alkali Metal Anodes.

Jialin Lin1, Zian Wang1, Chaoping Liang1

  • 1National Engineering Research Center of Powder Metallurgy, Powder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410083, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|November 20, 2025
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Summary
This summary is machine-generated.

This study introduces a metal-adaptive solid-electrolyte interphase (SEI) strategy for lithium (Li) and sodium (Na) anodes. The new SEI design enhances battery performance by tailoring interphases to specific metal requirements, improving stability and energy density.

Keywords:
Lithium/sodium metal anodescyclabilityelectrochemical kineticshierarchical composite interphasein situ covalent‐coupling reactions

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • Alkali metal anodes (Li, Na) require customized solid-electrolyte interphases (SEIs) due to unique physicomechanical and electrochemical demands.
  • Generic SEI approaches fail to meet these metal-specific requirements, limiting battery performance and lifespan.

Purpose of the Study:

  • To develop a metal-adaptive SEI reconstruction strategy for alkali metal anodes.
  • To leverage reactivity-guided coatings for tailored SEI formation.
  • To investigate the impact of metal-specific SEI structures on battery performance.

Main Methods:

  • Utilized diisopropoxy-bisethylacetoacetatotitanate (DPBT) coatings on lithium (Li) and sodium (Na) anodes.
  • Investigated the hierarchical architecture of the resulting interphases (titanate layer, TiO2 matrix, Ti-O-M segments).
  • Analyzed metal-specific structural differentiation and its correlation with electrochemical performance.

Main Results:

  • Developed TC-Li and TC-Na anodes with metal-specific SEI structures.
  • Li anodes formed dense, high-modulus SEI suppressing dendrites; Na anodes formed porous SEI accommodating strain and enhancing activity.
  • Achieved high-capacity retention (89.3% for Li) and energy density (550.2 Wh kg-1) in NCM811||TC-Li cells.
  • NFM||TC-Na cells demonstrated exceptional cycling stability (79.7% retention at 0.3 C/1 C over 200 cycles).

Conclusions:

  • The proposed metal-adaptive SEI strategy successfully tailors interphases for Li and Na anodes.
  • Metal-specific SEI structures significantly enhance battery cycle life, capacity retention, and energy density.
  • This approach offers a pathway to advanced alkali metal batteries with improved safety and performance.