提高LAGP玻璃陶瓷和纤维热拉伸的热导率和离子电导率

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.292

Zhongyue Wang , Qi Ma , Zhiwen Wu , Jie Zhou , Qing Zhang , Qi Zhang , Peng Lv , Kehan Yu , Wei Wei

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引用次数: 0

摘要

复合固体电解质（cse）是全固态锂离子电池（asslib）有吸引力的候选者，在聚合物基体中加入活性陶瓷纤维代表了最大化离子导电性的理想结构。在能以玻璃态存在的有限锂离子导体中，LAGP玻璃表现出最好的热稳定性，但它不足以直接热拉伸到纤维中。通过系统研究单组分（Y2O3/B2O3/SiO2）和多组分（Re2O3-B2O3）（Re、稀土）改性LAGP的热性能、离子电导率和微观结构，Re2O3-B2O3共改性LAGP表现出最具竞争力的热稳定性和离子电导率。其中，LAGP-0.06Y2O3-0.05B2O3玻璃具有优异的热稳定性（ΔT = 145℃），并可获得离子电导率为3.11 × 10−4 S cm−1、低活性能（Ea）为0.38 eV的致密陶瓷电解质。首次对LAGP-0.06 y2o3 -0.05 b2o3玻璃纤维进行热拉伸，得到了离子电导率高达3.87 × 10−4 S cm−1的改性LAGP陶瓷纤维。LAGP-0.06Y2O3-0.05B2O3陶瓷纤维具有制备周期短、效率高、可大规模制造、尺寸可控、离子电导率高等特点，在含活性陶瓷纤维的高性能cse中具有很强的竞争力。

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Thermal and ionic conductivity improvement of LAGP glass ceramic and fiber thermal drawing

Composite solid electrolytes (CSEs) are attractive candidates for all-solid-state lithium-ion batteries (ASSLIBs), and incorporating active ceramic fibers within polymer matrix represents an ideal structure for maximizing ionic conductivity. LAGP glass exhibits the best thermal stability among the limited lithium-ion conductors that can exist in glassy state, but it is insufficient for thermal drawing into fibers directly. By systematically studying the thermal properties, ionic conductivity and microstructure of LAGP modified by single component (Y₂O₃/B₂O₃/SiO₂) and multicomponent (Re₂O₃-B₂O₃) (Re, Rare earth), Re₂O₃-B₂O₃ co-modified LAGP shows the most competitive thermal stability and ionic conductivity. Among them, LAGP-0.06Y₂O₃-0.05B₂O₃ glass reveals excellent thermal stability (ΔT = 145 °C), and a dense ceramic electrolyte with an ionic conductivity of 3.11 × 10⁻⁴ S cm⁻¹ and low active energy (E_a) of 0.38 eV can be achieved. LAGP-0.06Y₂O₃-0.05B₂O₃ glass fibers are thermally drawn for the first time, and a modified LAGP ceramic fiber with high ionic conductivity up to 3.87 × 10⁻⁴ S cm⁻¹ is obtained. The short preparation period, high efficiency and large-scale manufacturability, controllable size and high ionic conductivity make LAGP-0.06Y₂O₃-0.05B₂O₃ ceramic fibers highly competitive for use in high-performance CSEs containing active ceramic fibers.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.