DataVXACS Materials LettersPaper
journal article·2026-06-24

Lattice Contraction and Ionic Conductivity Enhancement in LaCl 3 -Based Solid-State Electrolytes under Moderate Pressure and Heating

Longfei Li, Zhiwu Yu, Liming Zhang, Yi Sun, Xu Zhang, Minna Guo, Xiaolei Lu, Hongfa Xiang, Wenwen Deng, Xuyong Feng

ACS Materials Letters
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Source abstract

Abstract

It is conventionally believed that pressure below the GPa range has a negligible effect on the structure and properties of solid materials. Here, we challenge this notion by demonstrating that heating at 80 °C under a moderate pressure of 60 MPa induces lattice contraction and Li + redistribution in a LaCl 3 -based solid-state electrolyte. This structural evolution, confirmed by X-ray diffraction and solid-state nuclear magnetic resonance, results in an increase in ionic conductivity from 1.2 to 1.6 mS cm −1 and a decrease in activation energy from 0.27 to 0.19 eV. The one-dimensional ion-transport channels along the c -axis in LaCl 3 feature large intrinsic sizes and weak intermolecular interactions, rendering them susceptible to compression under such moderate conditions. This structural compaction facilitates Li + rearrangement and enhances ion transport, ultimately boosting the electrolyte's overall ionic conductivity.
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Research context

Energy storage

OpenAlex topics: Molten salt chemistry and electrochemical processes · Thermal Expansion and Ionic Conductivity · Advancements in Solid Oxide Fuel Cells

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Engineering Research Center of High-Performance Copper Alloy Materials and Processing, Ministry of Education

Hefei University of Technology

High Magnetic Field Laboratory, CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology

Hefei Institutes of Physical Science, Chinese Academy of Sciences

China Society of Automotive Engineers

School of Materials Science and Engineering

Anhui University

Funding

Major Science and Technology Projects in Anhui Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Innovation R&D Program of Anhui Province · Major Science and Technology Projects in Tongling City · Key R&D Program of Anhui Province

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