Related Experiment Video
Updated: Feb 8, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.3K
Lithium Silicide Surface Enrichment: A Solution to Lithium Metal Battery
Wei Tang1,2, Xuesong Yin1, Sujin Kang3
1Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore.
Advanced Materials (Deerfield Beach, Fla.)
|July 6, 2018
Summary
Restructuring lithium metal battery anodes with lithium silicide (Lix Si) prevents dendrite formation. This surface modification ensures uniform lithium deposition, enhancing battery performance and cycle stability for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium dendrite formation during charging hinders lithium metal battery safety and lifespan.
- Inhomogeneities and high reactivity of the native lithium surface layer create preferential sites for dendrite growth.
- Developing stable and uniform lithium metal anodes is critical for advancing high-energy-density batteries.
Purpose of the Study:
- To investigate the potential of lithium silicide (Lix Si) surface modification to mitigate lithium dendrite formation.
- To evaluate the impact of Lix Si modification on lithium deposition uniformity and electrochemical performance.
- To assess the feasibility of this anode modification for practical, large-scale lithium metal battery applications.
Main Methods:
- In situ optical microscopy to observe lithium deposition on bare and Lix Si-modified lithium electrodes.
- Electrochemical characterization of full cells using Lix Si-modified anodes with sulfur and LiFePO4 cathodes.
- Evaluation of rate capability and cycle stability of the modified battery systems.
Main Results:
- Lix Si surface modification effectively eliminated surface inhomogeneity on the lithium anode.
- Uniform lithium dissolution and deposition were observed on Lix Si-modified electrodes, unlike bare lithium.
- Full cells demonstrated excellent rate capability and cycle stability with the modified lithium metal anode.
Conclusions:
- Restructuring the lithium surface into lithium silicide is a viable strategy to prevent dendrite formation.
- The Lix Si modification promotes uniform lithium plating, significantly improving battery performance.
- This anode enrichment method is compatible with mass production, paving the way for practical lithium metal batteries.
Related Concept Videos
03:12Batteries and Fuel Cells
31.0K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
31.0K
03:06Alkali Metals
24.9K
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
Table 1: Properties of the alkali metals
24.9K
01:21DC Battery
1.3K
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
1.3K
02:32Bonding in Metals
52.6K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
52.6K
02:37Metallic Solids
20.8K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.8K
02:51Metal-Ligand Bonds
24.4K
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...
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...
24.4K