相关实验视频

Updated: May 26, 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

涂有LiAlSiO4的Li1.2Mn0.54Ni0.13Co0.13O2阴极:提高离子电池的性能

Shang-Mei Yang¹, Shi-Ping Shao¹, Yu-Long Xie¹

¹School of Chemistry and Chemical Engineering, Qinghai Minzu University, Key Laboratory of Resource Chemistry and Eco-environmental Protection in Tibetan Plateau of State Ethnic Affairs Commission, Qinghai Provincial Key Laboratory of Nanomaterials and Nanotechnology, Xining, China.

|February 25, 2025

概括

酸 (LiAlSiO4) 涂层增强了富含的分层阴极材料,改善了先进的离子电池的导电性和电化学性能.

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
固态化学固态化学

背景情况:

富含的多层过渡金属氧化物是高能量密度离子电池的有希望的阴极材料.
然而,由于速度能力差,骑自行车的稳定性和安全问题,它们的实际应用受到阻碍.

研究的目的:

为了合成和表征LiAlSiO4涂层Li1.2Mn0.54Ni0.13Co0.13O2 (LNCM@LASO) 阴极材料.
研究LiAlSiO4涂层对这些材料电化学性能的影响.

主要方法:

在LiAlSiO4涂层阴极材料的sol-gel合成中.
高强度X射线衍射用于结构分析.
电化学测试,包括速度能力和循环性能评估.

主要成果:

LiAlSiO4涂层显著提高了最初的库伦比克效率 (LASO-3的66.02%与未经修改的样本的42.27%相比).
LASO-3电极表现出极好的速率性能 (例如,在2°C时125.2 mAh·g-1) 和容量保留 (在0.1°C时100个循环后88.9%).
涂层增强了电子和离子转移,防止电解质攻击,并改善了整体电化学稳定性.

结论:

AlSiO4涂层是一种有效的策略,可以提高丰富的多层阴极材料的电化学性能.
提高了LNCM@LASO的导电性和化学稳定性,有助于提高离子电池的性能.
这项工作促进了高容量,稳定和成本效益的离子电池的开发.

更多相关视频

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Published on: March 7, 2018

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

相关概念视频

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...