从黄瓜皮中提取的活性碳用于作为超级电容器电极材料
Meruyert Nazhipkyzy1,2,3, Gulim Kurmanbayeva2, Aigerim Seitkazinova1,2
1Department of Chemical Physics and Material Science, Al-Farabi Kazakh National University, 71 Al-Farabi Ave., Almaty 050038, Kazakhstan.
Nanomaterials (Basel, Switzerland)
|April 26, 2024
概括
黄瓜皮被转化为超级电容器的活性炭. 性能最好的材料,ACP-800,表现出高特异电容和出色的稳定性,突出其用于储能应用的潜力.
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
- 可持续化学 可持续化学
背景情况:
- 生物废物利用提供了一个可持续的生产有价值材料的途径.
- 活性炭是储能装置 (如超级电容器) 的关键电极材料.
- 从可再生资源中开发具有成本效益和高性能的活性碳是持续研究的重点.
研究的目的:
- 从黄瓜皮中合成微半孔活性炭.
- 为了评估这些活性炭作为超级电容电极的电化学性能.
- 为了研究多孔结构和电容性质之间的关系.
主要方法:
- 在600°C时,黄瓜皮的碳化.
- 在各种温度下进行热激活,以创建层次性的多孔性.
- 超级电容器中活性炭的电化学测试使用循环电压测量和静电电荷放电.
- 使用SEM,EDX,BET,热分析和FTIR进行材料表征.
主要成果:
- 来自黄瓜皮的活性炭 (ACP-800) 的高特异性表面积为2333 m2g-1.1.
- 在低电流密度下,ACP-800显示了300 F/g (CV) 和331 F/g (GCD) 的特定电容.
- 该材料在2000个循环以1A/g后保持了100%的容量,表明了极好的稳定性.
- 层次性多孔性,与相互连接的中孔和微孔,被确定为增强性能的关键.
结论:
- 黄瓜皮可以有效地转化为高性能的微半孔活性炭.
- 合成的活性炭 (ACP-800) 显示出作为超级电容器的电极材料的巨大潜力.
- 这项研究为生物废物在先进的储能技术中利用提供了可持续和经济的途径.
更多相关视频
12:00Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
12.2K
08:59Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance
Published on: November 30, 2022
4.5K
相关概念视频
Capacitors and Capacitance
8.3K
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...
8.3K
Energy Stored in a Capacitor: Problem Solving
1.8K
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...
1.8K
Capacitor With A Dielectric
4.3K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.3K
Capacitor in an AC Circuit
3.4K
A capacitor is charged by passing an electric current through it, which causes the plates to start accumulating an electrostatic charge. Since the strength of the charging current is maximum when the capacitor plates are uncharged and gradually decreases exponentially until the capacitor is fully charged, the charging process is neither instantaneous nor linear. The property of a capacitor to store a charge on its plates is called its capacitance.
Consider a purely capacitive circuit consisting...
Consider a purely capacitive circuit consisting...
3.4K
Capacitors
1.3K
Capacitors play a crucial role in car radios, where they filter and store frequencies to ensure clear signal reception. Essentially serving as energy storage devices, capacitors store energy within their electric field and are composed of two parallel conducting plates separated by a dielectric.
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
When a voltage source is connected to a capacitor, positive and negative charges accumulate on the opposite plates. This accumulation generates a potential difference that equals the product of the...
1.3K
MOS Capacitor
1.8K
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...
1.8K
