阻燃电解质与电化学惰性和弱协调的二甲稀释剂用于实际的金属电池
Zhicheng Wang1,2, Haifeng Tu3, Xingdong Ma1
1Tianmu Lake Institute of Advanced Energy Storage Technologies Co., Ltd., Liyang, P. R. China.
Nature communications
|November 19, 2025
概括
使用二甲稀释剂的新型阻燃电解质提高了金属电池的安全性和性能. 这种电解质可实现高压金属电池的稳定循环和广泛温度运行.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 下一代金属电池需要先进的电解质,以提高安全性,稳定性和工作温度范围.
- 目前的电解质在实现低成本,高安全性和强大的电极-电解质接口同时面临挑战.
研究的目的:
- 为高压金属电池开发一种阻燃电解质.
- 调查二甲稀释剂对电解质特性和金属界面化学的影响.
- 为了提高金属电池的安全性,循环稳定性和广泛温度性能.
主要方法:
- 将电化学惰性二甲稀释剂引入基于三乙烯酸盐的高度电解质.
- 系统地研究稀释剂对Li+溶解结构,氧化还原行为和界面化学的影响.
- 在各种条件下对金属袋式电池进行电化学测试.
主要成果:
- 1,3-二烯被确定为一种理想的稀释剂,形成强大的有机丰富的介面相,并改善Li+运输/脱溶.
- 开发的电解质证明了增强的安全性,循环稳定性和速度能力.
- 实用Liidiye下载NCM83袋式电池在100个循环中实现了94.1%的容量保留,并在-60°C至+60°C之间有效运行.
结论:
- 使用二甲稀释剂的阻燃电解质显著推进了金属电池技术.
- 这种电解质配方为在广泛的温度范围内安全稳定的高压金属电池提供了有前途的解决方案.
- 这些发现突显了具有成本效益和高性能储能解决方案的潜力.
更多相关视频
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
13.4K
10:03Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
26.0K
相关概念视频
01:19Acid Halides to Alcohols: LiAlH4 Reduction
3.8K
Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
The mechanism proceeds in three steps. First, the nucleophilic hydride ion attacks the carbonyl carbon of the acid halide to form a tetrahedral intermediate. Next, the carbonyl group is re-formed, and the halide ion departs as a leaving group, generating an aldehyde. A second nucleophilic attack by the hydride yields an alkoxide ion, which, upon protonation, gives a primary alcohol as...
3.8K
03:06Alkali Metals
24.1K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
24.1K
03:12Batteries and Fuel Cells
30.7K
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...
30.7K
02:48Ionic Bonding and Electron Transfer
48.6K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
48.6K
01:14Acid Halides to Ketones: Gilman Reagent
3.8K
Lithium dialkyl cuprate, also known as Gilman reagents, selectively reduces acid halides to ketones. The acid chloride is treated with Gilman reagent at −78 °C in the presence of ether solution to produce a ketone in good yield.
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen...
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen...
3.8K
02:21Electrolyte and Nonelectrolyte Solutions
70.9K
Substances that undergo either a physical or a chemical change in solution to yield ions that can conduct electricity are called electrolytes. If a substance yields ions in solution, that is, if the compound undergoes 100% dissociation, then the substance is a strong electrolyte. Complete dissociation is indicated by a single forward arrow. For example, water-soluble ionic compounds like sodium chloride dissociate into sodium cations and chloride anions in aqueous solution.
70.9K