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Related Experiment Video

Updated: Oct 17, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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A Morphologically Stable Li/Electrolyte Interface for All-Solid-State Batteries Enabled by 3D-Micropatterned Garnet.

Rong Xu1, Fang Liu1, Yusheng Ye1

  • 1Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.

Advanced Materials (Deerfield Beach, Fla.)
|October 11, 2021
PubMed
Summary
This summary is machine-generated.

A novel 3D-micropatterned solid-state electrolyte (3D-SSE) stabilizes the lithium interface in all-solid-state batteries (ASSBs). This breakthrough enables stable cycling under high current density and low stack pressure, overcoming key limitations.

Keywords:
3D-micropatterned garnetall-solid-state batterieselectrochemomechanicsinterfacial degradationsolid-state electrolytesvoid formation

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Battery Technology

Background:

  • Morphological degradation at the lithium/solid-state electrolyte (SSE) interface is a major cause of performance fading in all-solid-state batteries (ASSBs).
  • Current ASSB operation often requires low current density and high stack pressure to maintain interfacial integrity, limiting practical applications.

Purpose of the Study:

  • To develop a novel 3D-micropatterned SSE (3D-SSE) capable of stabilizing the Li/SSE interface.
  • To enable stable ASSB performance under higher current densities and reduced stack pressure.

Main Methods:

  • Fabrication of a garnet-type 3D-SSE using laser machining.
  • Assembly and testing of Li symmetric cells utilizing the 3D-SSE.

Main Results:

  • The Li symmetric cell with 3D-SSE demonstrated a high critical current density of 0.7 mA cm⁻² under 1.0 MPa pressure.
  • Stable cycling exceeding 500 hours was achieved at 0.5 mA cm⁻².
  • The 3D-SSE effectively reduced local current density and amplified mechanical stress at the Li/SSE interface.

Conclusions:

  • The 3D-micropatterned SSE successfully prevents interfacial degradation, including void formation and dendrite growth.
  • This approach enhances the flux balance between Li stripping and creep, crucial for ASSB longevity.
  • The developed 3D-SSE technology offers a promising solution for advancing high-performance ASSBs.