相关实验视频

Updated: Jun 28, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

超薄,机械坚固的半固体复合电解质用于固态金属电池

Qingrong Wang¹, Hongli Xu¹, Zhongbo Liu²

¹Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China.

ACS applied materials & interfaces

|April 23, 2024

概括

这项研究开发了一种超薄,坚固的准固体复合电解质,用于固态金属电池. 新的电解质显示出出色的离子导电性和机械强度,使电池性能稳定,并抑制树的生长.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
聚合物科学聚合物科学

背景情况:

固态金属电池 (SLB) 与传统的离子电池相比,提供了更高的安全性和能量密度.
开发机械坚固和离子导电电解质仍然是SLB实际应用的关键挑战.
准固体电解质弥合了液体和固体电解质之间的差距,提供了更好的安全性和可加工性.

研究的目的:

为高压SLBs准备和表征一种超薄,机械坚固的准固体复合电解质 (SEO-QSCE).
评估开发的电解质的电化学性能,机械性能和树抑制能力.
在实际的SLB设备中展示SEO-QSCE的潜力.

主要方法:

使用聚乙烯-乙烯氧化物双块共聚合物,Li6.75La3Zr1.75Ta0.25O12纳米填充剂和乙烯碳酸盐增塑剂合成准固体复合电解质.
电解质的微观结构,离子导电性,抗拉强度和弹性模量.
使用LiFePO₄和LiNi_0.5Co_0.3Mn_0.2O₂阴极组装和测试SLB,以评估循环性能和稳定性.

主要成果:

SEO-QSCE 具有高离子导电性 (1.3 × 10−3 S cm−1 在 30 °C) 和显著的机械强度 (5.1 MPa 拉伸强度, 2.7 GPa 弹性模量) 的双连续相.
电解质有效地抑制了树脂的生长,使树脂LiFePO₄细胞能够在600个周期内稳定循环.
使用LiNi_0.5Co_0.3Mn_0.2O₂阴极的高压SLB在袋式电池中表现出良好的循环稳定性和灵活性.

结论:

开发的超薄,机械坚固的SEO-QSCE是高压固态金属电池的有希望的电解质.
独特的双连续相结构和机械完整性有助于优越的电化学性能和安全性.
这项工作提出了一种创新的方法,用于为下一代储能设备设计先进的准固体电解质.

关键词:

双连续的相位阶段.金属电池是金属电池的一种.聚乙烯-聚乙烯 (乙烯氧化物) 双块共聚合物.准固体复合电解质的复合电解质.超薄的超薄的

更多相关视频

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Ultrasound Velocity Measurement in a Liquid Metal Electrode

Published on: August 5, 2015

相关概念视频

Batteries and Fuel Cells

Batteries and Fuel Cells

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...

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

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.