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Related Concept Videos

Metallic Solids02:37

Metallic Solids

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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....
18.3K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

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Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
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Related Experiment Video

Updated: Jun 11, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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A Self-Healing, Flowable, Yet Solid Electrolyte Suppresses Li-Metal Morphological Instabilities.

Yubin He1, Chunyang Wang1, Ruoqian Lin2

  • 1Department of Physics and Astronomy, University of California, Irvine, CA, 92697, USA.

Advanced Materials (Deerfield Beach, Fla.)
|October 10, 2024
PubMed
Summary

A novel self-healing solid electrolyte for lithium metal batteries repairs cracks and accommodates electrode volume changes. This advanced electrolyte enables stable cycling and extended battery life, overcoming key implementation challenges.

Keywords:
lithium dendriteslithium metal batterypolymer electrolytesolid‐state electrolyte

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Solid-State Batteries

Background:

  • Lithium metal solid-state batteries face challenges like dendrite formation and interface instability.
  • Voids and cracks in solid electrolytes are critical failure points during battery operation.
  • Existing electrolytes struggle to balance mechanical integrity with ion conductivity.

Purpose of the Study:

  • To develop a self-healing, flowable solid electrolyte for lithium metal batteries.
  • To address void/crack formation and electrode volume changes during cycling.
  • To enhance the cycling stability and lifespan of lithium metal solid-state batteries.

Main Methods:

  • Fabrication of a self-healing electrolyte using mobile ceramic crystals in a reconfigurable polymer network.
  • Characterization via operando synchrotron X-ray, in situ transmission electron microscopy (TEM), and solid-state NMR.
  • Testing of Li0-Li0 and Li0-NMC811 full cells under various current densities and cycling conditions.

Main Results:

  • The electrolyte exhibits a self-healing rate of 5.6 µm h⁻¹ and dynamically switches between liquid and solid states.
  • Demonstrated accommodation of electrode volume changes and regulation of lithium deposition with high tensile strength (0.28 MPa).
  • Achieved extended cycling life in Li0-Li0 cells (12,000 h at 0.2 mA cm⁻²) and stable cycling in full cells (1100 cycles at 5 mA cm⁻²).

Conclusions:

  • The designed self-healing electrolyte effectively mitigates key failure mechanisms in lithium metal solid-state batteries.
  • The dual-phase ion conduction and rapid Li+ diffusion contribute to enhanced electrochemical performance.
  • This material offers a promising pathway for developing robust and long-lasting solid-state lithium metal batteries.