KFeSO4F/C复合物的合成及其作为高性能离子电池的阴极的使用
Yuhang Du1,2, Zijing Ren1, Hui Ma1,2
1Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
ACS applied materials & interfaces
|January 29, 2026
概括
本研究介绍了一种用于离子电池 (PIB) 的KFeSO4F/C复合阴极材料的新型大规模合成方法. 该材料表现出卓越的电化学性能和稳定性,为实际的PIB应用铺平了道路.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 由于高电压和稳定性,聚离子化合物是离子电池 (PIB) 的有希望的阴极材料.
- 基于铁的硫酸KFeSO4F提供了独特的3D结构和低成本,但由于导电性和聚合性差.
- 目前的合成方法不适合大规模生产.
研究的目的:
- 为KFeSO4F阴极材料开发一种可扩展的合成方法.
- 通过解决其局限性来提高KFeSO4F的电化学性能.
- 为了证明KFeSO4F/C作为PIBs的高性能阴极的潜力.
主要方法:
- 简单的室温球磨法用于大规模合成.
- 制备KFeSO4F/C复合物,具有碳诱导的抗凝聚特性.
- 电化学表征包括充放电循环和速率能力测试.
主要成果:
- 成功合成了一个低杂质相,高晶度KFeSO4F/C复合物 (KFeSO4F/C-c).
- KFeSO4F/C-c具有3.63V的高平均放电电压和0.1C时115.69mAhg-1的可逆容量.
- 在10C保持94.93 mAh g-1和在1000次5C循环后77%的容量保留.
结论:
- 室温球磨法使高性能KFeSO4F/C阴极材料的大规模合成成为可能.
- 该KFeSO4F/C-c复合物克服了内在的局限性,显示了PIBs的优良电化学特性.
- 这项工作支持离子电池的实用,大规模应用.
相关概念视频
Batteries and Fuel Cells
30.9K
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...
30.9K
DC Battery
1.3K
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
1.3K
Regulation of Sodium and Potassium
2.2K
The regulation of sodium and potassium ion concentrations in the human body is a complex process governed primarily by hormones such as aldosterone, antidiuretic hormone (ADH), and atrial natriuretic peptide (ANP).
Sodium Regulation
Sodium ions make up approximately 90% of extracellular cations, with a normal blood plasma concentration of 136–148 mEq/L. A decrease in blood volume and pressure triggers the release of renin from granular cells in the juxtaglomerular complex (JGC), primarily...
Sodium Regulation
Sodium ions make up approximately 90% of extracellular cations, with a normal blood plasma concentration of 136–148 mEq/L. A decrease in blood volume and pressure triggers the release of renin from granular cells in the juxtaglomerular complex (JGC), primarily...
2.2K
Common Ion Effect
46.6K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
46.6K
Classifying Matter by Composition
90.3K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
90.3K
Precipitation of Ions
30.3K
Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
30.3K


