相关实验视频

Updated: Jul 8, 2025

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

具有匹配格子的多层酸:固态金属电池中的单离子导体

Xuanao Ma¹, Yang Liu¹, Yunhuai Zhang¹

¹Department of Applied Chemistry, College of Chemistry and Chemical Engineering, Chongqing University Chongqing 401331 P. R. China gongyun7211@cqu.edu.cn +86-023-65678932.

Chemical science

|December 11, 2023

概括

这项研究引入了一种新的酸材料 (NTO),用于改进固态电解质,用于更安全,更高能量的金属电池. NTO材料增强了离子导电性和稳定性,使电池能够长期保持性能.

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
储能储能储能储能储能储能

背景情况:

金属电池 (SMB) 与离子电池相比,具有高能量密度和安全优势.
固态电解质 (SSE) 和金属阳极之间的界面电阻仍然是中小企业业绩的关键挑战.
实现高效的离子 (Na+) 迁移和稳定的接口对于实际的中小企业应用至关重要.

研究的目的:

开发一种有效的战略,以减少中小企业的SSE/Na接口阻力.
为了合成和表征一种具有氧空缺的新型板状层状酸 (Na0.98Ti1.3O3,NTO).
在中小企业中评估基于NTO的复合聚合物电解质 (CPE) 的性能.

主要方法:

与富含氧气空缺的板状层状酸 (NTO) 的合成.
使用PVDF-HFP和NaPF6.6制造NTO复合聚合物电解质 (CPE).
电化学表征包括离子导电性,转移数和对称和全细胞的循环性能.

主要成果:

NTO表现出具有低激活能 (0.159 eV) 和高Na+转移数 (0.91) 的单离子导电行为.
该NTO CPE表现出高离子导电性 (1.16 × 10-4 S cm-1) 和0.73.7的Na+转移数.
奈良NTO奈良Na和奈良NTO CPE奈良Na对称单元显示稳定的循环,归因于 Na (110) 和 NTO (001) 面之间的格子匹配.
一个完整的细胞 (Na NTO CPE Na Na3V2(PO4)3) 显示出高容量和良好的循环稳定性,可能是由于NTO中的氧气空缺.

结论:

提出的格子匹配方法有效地降低了界面阻力,并促进了SSE中的Na+迁移.
基于NTO的CPE显示了稳定和高效的金属电池的有希望的性能.
在NTO中空缺的氧气在离子捕获和离子解离中起作用,进一步提高了电化学性能.

更多相关视频

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$ 11:25

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

相关概念视频

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.

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 Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...