所有在所有:死离子电池到活跃的离子电容器
Akshay Manohar1, Aranganathan Viswanathan1, Yun-Sung Lee2
1Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati, 517619, India.
ChemSusChem
|July 23, 2024
概括
这项研究通过回收使用过的离子电池 (LIB) 的组件来开发高性能离子电容器 (LIC). 上循环材料可实现可持续的能量储存,具有出色的能量密度和超长的耐用性.
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
- 可持续的能源储存 可持续的能源储存
背景情况:
- 混合电容器,如离子电容器 (LIC),对于推进电化学储能至关重要.
- 低压电路通过混合电极将高能量和功率密度结合起来,提供了一个有前途的解决方案.
- 回收使用过的离子电池 (LIB) 为可持续的材料采购提供了机会.
研究的目的:
- 开发高性能LIC,使用已用LIB的回收组件.
- 为了证明升回LIB材料的可行性,用于先进的能量存储设备.
- 为了评估制造的LIC的电化学性能和耐用性.
主要方法:
- 从使用过的LIB中回收石墨,铜和聚烯分离器.
- 在回收铜上使用回收石墨 (RG) 制造LIC阳极.
- 从RG合成一个减少的氧化石墨烯 (rGO) 阴极,并组装LIC装置.
主要成果:
- 在75个循环中,RG阳极实现了302 mAh/g的特定容量,高于99%的库伦比效率.
- /rGO阴极在1000多个周期中表现出稳定的循环性能.
- 最后的rGO/p-RG LIC提供了185Wh/kg的能量密度和>10,000个周期的耐用性,在各种温度下表现良好.
结论:
- 消耗的LIB可以有效地进行升级,以创建高性能LIC,促进储能循环经济.
- 开发的LIC显示出出色的能量密度,功率和特殊的长期循环稳定性.
- 这种方法为下一代储能解决方案提供了一个可持续的途径.
相关概念视频
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
MOS Capacitor
756
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
756
Energy Stored in a Capacitor: Problem Solving
1.1K
In 1749, Benjamin Franklin coined the word battery for a series of capacitors connected to store energy. Capacitors store electric potential energy that can be released over a short time. This property means capacitors have a wide range of applications.
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
Capacitor-discharge ignition is a type of ignition system commonly found in small engines where the energy released from a capacitor ignites an induction coil that, in turn, fires the spark plug.
To calculate the energy stored in a capacitor of...
1.1K
Capacitors and Capacitance
7.6K
A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
7.6K
Voltaic/Galvanic Cells
57.0K
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,...
57.0K
Energy Stored in Capacitors
475
A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...
475


