相关实验视频
Updated: May 20, 2025

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.3K
在稳定和实用的金属电池中对增强局部高度电解质的接口和批量进行共同调节
Tao Li1, Hange Yang2, Xinji Dong1
1Shanghai Jiao Tong University, School of Materials Science and Engineering, Zhangjiang Institute for Advanced Study (ZIAS), Dongchuan Road 800, 200240 Shanghai, PR China, Shanghai, CHINA.
Angewandte Chemie (International ed. in English)
|May 19, 2025
概括
这项研究引入了面接增强的局部高度电解质 (ILHCE),以克服可充电金属电池的挑战. 新的电解质设计提高了电池的性能和寿命,为实际的储能解决方案铺平了道路.
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:
- 可充电金属电池 (RZMBs) 具有高容量和成本效益,但面临着树突增长和阴极降解的问题.
- 现有的局部高度电解质因盐度高和惰性稀释剂而面临实际限制.
研究的目的:
- 为RZMBs开发一种新的接口增强局部化高度电解质 (ILHCE).
- 为应对金属电池性能方面的挑战,包括树矿形成和阴极不稳定性.
主要方法:
- 采用了联合监管策略,整合了散装和接口属性.
- 1,4-二和1-乙基-3-甲基利米达 (emim+) 阳离子被纳入稀释的水性电解质中.
- 研究了电解质对电双层 (EDL) 和固体电解质间相 (SEI) 的影响.
主要成果:
- 该ILHCE策略创造了一个离子丰富,缺水的EDL,增强Zn2+运输和阴极稳定性.
- 形成了一个强大的离子衍生的固体电解质介相.
- 带有Mn0.5V6O13阴极的充满电池在0.2A g-1的300个周期内实现了80%的容量保留,N/P比率低.
结论:
- ILHCE设计有效地解决了RZMB的关键问题,特别是在具有挑战性的操作条件下.
- 这种电解质创新代表了可充电金属电池的实际应用的重大进步.
相关概念视频
Standard Electrode Potentials
42.9K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
42.9K
Concentration Cells
22.0K
A concentration cell is a type of a voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and using the same electrode, differing only in the concentration of one redox species. A concentration cell's potential, therefore, is determined only by the concentration difference of the particular redox species.
Consider the following voltaic cell:
Consider the following voltaic cell:
22.0K
Formation of Complex Ions
23.1K
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...
23.1K
Electrodeposition
502
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
502
Extraction: Advanced Methods
396
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
396
Voltaic/Galvanic Cells
55.5K
Spontaneous Chemical Reactions
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,...
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,...
55.5K

