相关实验视频
Updated: Jul 4, 2025

07:23
Construction and Testing of Coin Cells of Lithium Ion Batteries
Published on: August 2, 2012
31.6K
作为可充电电池的阴极材料的甲硫化物
1College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China.
ACS applied materials & interfaces
|January 26, 2024
概括
用硫修饰二硫化物化合物,制造可充电电池的二硫化物 (PDTeS) 和二硫化物 (PDTeS2). 这些新材料具有显著更高的特定容量和稳定的循环性能.
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
- 无机化学 无机化学
背景情况:
- 二甲化物 (PDTe) 在可充电电池中表现出有限的容量,原因是活性点不足.
- 增强阴极材料需要加入额外的活性物种,如硫.
研究的目的:
- 为了合成新型的 tellurosulfide (PDTeS) 和 tellurodisulfide (PDTeS2) 化合物.
- 评估它们作为可充电电池的阴极材料的性能.
主要方法:
- 从PDTe中合成PDTeS和PDTeS2的加法反应.
- 使用质谱法和拉曼光谱法进行表征.
- 对Li/PDTeS (n) 细胞进行电化学测试.
主要成果:
- PDTeS和PDTeS2的特定容量分别为242.8和339.6mAhg-1 .
- /PDTeS (n) 细胞表现出高物质利用率 (>85%) 和1000个循环以上的稳定循环.
- /PDTeS2电池达到695Wh kg-1的特定能量,电解质/材料比较低.
结论:
- 烯硫化化合物是高性能可充电电池的有希望的阴极材料.
- 加入硫有效地增强了二化的电化学活性.
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
25.5K
07:55Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
Published on: April 17, 2018
12.7K
相关概念视频
Preparation and Reactions of Sulfides
4.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.8K
Batteries and Fuel Cells
27.4K
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...
27.4K