相关实验视频

Updated: Jun 28, 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

碳涂层Na_3+xV_2-xCu_x(PO₄)₃@C阴极用于高性能离子电池

Zhiqiang Lv¹, Yanlei Zhang², Zhiqi Liu³

¹College of Chemistry and Materials Science, Ludong University, Yantai 264025, China.

Journal of colloid and interface science

|April 13, 2024

概括

碳涂层,铜合酸和酸阴极增强离子电池的性能. 这种设计提高了导电性和稳定性,使先进电池具有高能量密度和长周期寿命.

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:

酸 (Na3V2(PO4) 3) 是离子电池的一个有希望的阴极材料,因为它具有很高的潜力和稳定性.
低的内在电子导电性限制了Na3V2的实际应用.
提高导电性对于提高离子电池的电化学性能至关重要.

研究的目的:

开发一种经过修改的Na3V2(PO4) 3阴极,具有更好的电子导电性和离子扩散.
研究碳涂层和铜 (Cu2+) 兴奋剂对Na3V2(PO4) 3性能的影响.
为了确认反应机制并评估修改后的阴极的电化学特性.

主要方法:

用碳涂层,Cu2+合的Na3V2(PO4)3阴极材料的制备.
使用诸如X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 等技术进行表征.
电化学测试包括速度能力,循环稳定性和现场XRD分析.

主要成果:

碳涂层有效地提高了表面导电性和粒子形态.
2+兴奋剂增强了内在导电性和降低了Na+扩散障碍,提高了电荷转移动力学.
修改后的阴极表现出极好的速率性能 (92.6mAhg-1在10C) 和循环稳定性 (84.8%的保留在3300个循环后在10C).

结论:

结合的碳涂层和Cu2+兴奋剂策略显著提高了Na3V2(PO4) 3阴极的电化学性能.
这种方法解决了Na3V2的导电性限制,为高性能离子电池铺平了道路.
这些发现有助于开发具有高能量/功率密度和寿命的先进储能解决方案.

关键词:

碳涂层是一种碳涂层.2+) 兴奋剂的使用.Na(3)V(2)(PO(4))(3)) 没有问题.离子电池离子电池

更多相关视频

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

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

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...