相关实验视频

Updated: Jun 29, 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

提高离子电池的性能,使用二元金属合的Na₃V₂(PO₄) ₂F₃阴极

Jie Wang¹, Qiming Liu¹, Shiyue Cao¹

¹Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China; Duozhu Technology (Wuhan) Co., LTD, China.

Journal of colloid and interface science

|April 5, 2024

概括

这项研究增强了使用二进制化和化二氧化阴极的离子电池,并配有化碳涂层. 新材料显示了更好的导电性和电化学性能,以更好地储存能量.

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:

离子电池 (SIB) 对电网规模的能源存储具有前景.
聚离子类型的阴极,如Na3V2(PO4) 2F3 (NVPF),提供高电压,但电子导电性较低.
改善NVPF的导电性对于实际的SIB应用至关重要.

研究的目的:

为了提高SIB的NVPF阴极的电化学性能.
为了克服NVPF的低电子导电性限制.
开发一种具有改善离子扩散和结构稳定的新型阴极材料.

主要方法:

合成了一种二元共合的阴极:Na3.3K0.2V1.5Mg0.5(PO4)2F3.3.
在正极材料上涂上化碳 (NC) 涂层.
使用各种技术研究了材料的结构,导电性和电化学性能.

主要成果:

Na3.3K0.2V1.5Mg0.5(PO4)2F3@NC阴极表现出增强的电子导电性和降低的Na+扩散障碍.
该材料在0.1C时显示出124.3mAhg-1的高排放特异容量.
卓越的循环稳定性,在10C的1000个循环后保持93.1%的容量,并具有良好的速率能力 (20C的73.2 mAh g-1).

结论:

二元兴奋剂和NC涂层有效地提高了SIBs的NVPF阴极性能.
修改后的阴极表现出优越的电化学性能,包括容量,寿命和速率能力.
这项工作为开发用于储存离子能量的先进阴极材料提供了可行的策略.

关键词:

二元兴奋剂二元兴奋剂 Na(3)V(2)(PO(4))))))2)F(3)) 没有一个问题.用气合的碳.离子电池离子电池结构稳定性结构稳定性

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

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

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...