膜的批判性分析,以实现可持续和高效的氧化还原流电池
Jiaye Ye1,2, Lu Xia3, Huiyun Li4
1School of Chemistry and Physics, Faculty of Science, Queensland University of Technology, Brisbane, QLD, 4001, Australia.
Advanced materials (Deerfield Beach, Fla.)
|May 22, 2024
概括
本文审查了用于氧还原流电池 (VRFB) 的先进膜. 它强调了需要可持续的,高性能替代目前的硫酸 (PFSA) 膜,以改进VRFB技术.
科学领域:
- 电化学和能量储存 电化学和能量储存
- 材料科学用于能源应用
- 可持续能源技术 可持续能源技术
背景情况:
- 氧化还原流电池 (VRFB) 对于大规模的电能存储至关重要,因为它们的安全性,容量,可扩展性和耐用性.
- 目前的VRFB技术面临着膜方面的挑战,包括交叉,低导电性,高成本和与基基膜 (如硫酸) (PFSA) 相关的可持续性问题.
- 解决膜限制对于VRFB系统的更广泛的商业部署和更好的性能至关重要.
研究的目的:
- 审查VRFB应用的高性能和可持续膜的最新进展.
- 分析PFSA膜的性能提升与它们对环境的影响之间的权衡.
- 探索无PFSA膜的潜力和提高其性能的策略.
主要方法:
- 对VRFB膜的最新研究进行了全面的文献综述.
- 分析各种膜类型的性能指标,成本和可持续性,包括PFSA和替代品.
- 讨论关键膜参数和未来开发的设计策略.
主要成果:
- PFSA膜提供了性能优势,但也带来了重大可持续性挑战.
- 基于PFSA的膜的性能与广泛采用所需的可持续性之间存在着显著的差距.
- 新兴的无PFSA膜技术显示出有前途,目前正在制定战略来提高它们的导电性并减少交叉.
结论:
- 开发可持续的高性能膜对于VRFB技术的未来至关重要.
- 需要对没有PFSA的膜进行进一步的研究,并优化关键的膜参数.
- 需要战略设计协议来平衡下一代VRFB膜的性能和可持续性.
相关概念视频
03:12Batteries and Fuel Cells
27.3K
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...
27.3K
02:47Voltaic/Galvanic Cells
57.1K
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,...
57.1K
01:20Voltammetry: Overview
1.7K
Voltammetry is an electroanalytical technique in which the current flowing through an electrochemical cell is measured as a function of applied potential, typically under conditions of concentration polarization. The technique provides valuable information about redox-active species, and the current response is plotted as a voltammogram.
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
1.7K
03:00Electrolysis
26.3K
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...
26.3K
01:21Voltammetry: Factors Affecting Measurements
151
A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...
151
01:16Voltammograms: Overview
202
Voltammograms are current plots as a function of applied potential, offering insights into electrochemical systems. The shape of a voltammogram depends on how the current is measured and whether convection (heat transfer by fluid movement) is present or absent.
Shapes of Voltammograms
Shapes of Voltammograms
202