相关实验视频
Updated: Jun 15, 2025

06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.3K
对于静态水性-素电池的多式电解质架构
Tao Xiao1, Jin-Lin Yang1, Dongliang Chao2
1School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
National science review
|June 13, 2025
概括
可充电的静态水性-电池 (AZHBs) 对储能充满希望,但面临着腐蚀和转运等挑战. 电解质设计是优化两个电极以提高性能和寿命的关键.
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:
- 水性-电池 (AZHBs) 由于的潜力和丰富性,对储能具有吸引力.
- 目前的AZHBs因腐蚀和素穿而导致容量衰退,限制了它们的寿命.
- 高价值化物不稳定性限制了多电子反应,阻碍了能量密度.
研究的目的:
- 审查AZHBs的基本面,挑战和最近的进展.
- 强调电解质设计对于同时优化 Zn 阳极和素阴极的关键作用.
- 讨论同步电解质的有效测试和评估协议.
主要方法:
- 关于AZHB基本原理和挑战的文献综述.
- 对同步电极优化电解质设计策略的分析.
- 讨论拟议的电解质方法:双相,梯度水凝和离子液体电解质.
主要成果:
- 确定腐蚀和素转运是AZHBs的主要限制.
- 强调了电解质工程对于稳定的 Zn 金属阳极和高效的素阴极的必要性.
- 提出了先进的电解质系统,以应对当前的挑战.
结论:
- 同步电解质优化对于提高AZHBs的可逆性和寿命至关重要.
- 双相,梯度水凝和离子液体电解质为高性能AZHBs提供了潜在的解决方案.
- 对电解质设计的进一步研究可以为具有高能量密度和寿命的实际AZHB铺平道路.
相关概念视频
Standard Electrode Potentials
43.6K
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...
43.6K
Batteries and Fuel Cells
27.2K
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...
27.2K
Electrolysis
26.2K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.2K
Voltaic/Galvanic Cells
56.9K
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,...
56.9K
Extraction: Advanced Methods
433
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...
433
Concentration Cells
22.5K
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:
22.5K

