相关实验视频
Updated: Jul 5, 2025

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
强氧化盐用于加强结构修复,使使用过的分层阴极能够直接再生
Zhiming Xiao1, Yuxuan Yang1, Yizhuo Li1
1Engineering Research Center of the Ministry of Education for Advanced Battery Materials, School of Metallurgy and Environment, Central South University, Changsha, 410083, P. R. China.
直接再生消耗的离子电池阴极是通过一种新的盐系统来提升的. 这种方法有效地恢复了多层结构,提高了电池的性能,并实现了可持续的回收利用.
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
- 可持续化学 可持续化学
背景情况:
- 使用过的离子电池的直接再生对于可持续性至关重要.
- 重复使用LiNi$_{x}$Co$_{y}$Mn$_{1-x-y}$O$_{2}$阴极存在挑战,原因是表面相位问题阻碍了补充和结构转换.
- 在已耗尽的正极表面上的岩盐/螺旋相阻碍了高效的再生.
研究的目的:
- 研究使用过的LiNi_{x}$Co$_{y}$Mn$_{1-x-y}$O$_{2}$阴极的修复机制.
- 为LiNi_{0.5}$Co$_{0.2}$Mn$_{0.3}$O$_{2}$ (NCM523) 阴极开发一种高效的直接再生方法.
- 了解氧化大气在相位恢复中的作用.
主要方法:
- 使用三元组成的盐系统 (LiOH-Li2CO3 - LiNO3) 进行直接再生.
- 在低温下在类似液体的反应环境中在现场产生超氧化基.
- 分析盐系统对相位恢复和补充的协同效应.
主要成果:
- 氧化大气被证实是改善相位恢复率和程度的关键.
- 该LiOH-Li$_{2}$CO$_{3}$-LiNO$_{3}$系统有效地恢复了岩盐/石相,并实现了完整的补充.
- 再生NCM523阴极表现出高循环稳定性,在100个循环后保持91.7%的容量,相当于商业NCM523.
结论:
- 拟议的盐策略提供了一个简单的方法来完全恢复分层结构的阴极.
- 这种方法为使用过的离子电池的直接再生提供了一个独特的前景.
- 三元融盐系统的协同效应是克服再生挑战的关键.
更多相关视频
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
相关概念视频
Electrolysis
Corrosion of Reinforcement
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
Electrodeposition
Electrodeposition can...
Sample Preparation for Analysis: Advanced Techniques
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Voltaic/Galvanic Cells
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
Corrosion