伪容量氧化纳米线用于超高容量超级电容器
Sheilah Cherono1, Panupong Jaipan1, Zixiao Shi2
1Department of Mechanical Engineering, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, United States.
概括
与薄膜相比,氧化 (TiNO) 纳米线作为超级电容器的电极材料具有优越的性能. 这种增强的能量存储是由于它们的电容和能量密度更高,使得TiNO成为充电存储应用的有希望的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 电化学 电化学 电化学
背景情况:
- 合成了二维 (2D) 氧化 (TiNO) 薄膜和一维 (1D) TiNO纳米线.
- 脉冲激光沉积 (PLD) 被用作一种合成方法.
- 第一个原则的计算是用来理解材料的性质.
研究的目的:
- 为了合成高质量的TiNO薄膜和纳米线.
- 为了研究TiNO材料的结构和电化学特性.
- 评估TiNO作为超级电容器的潜在电极材料.
主要方法:
- 通过脉冲激光沉积合成TiNO薄膜和纳米线.
- 第一原则计算以确定表面方向和终端效应.
- 特定电容和能量密度的电化学表征.
主要成果:
- TiNO纳米线的特异电容为2725mF/cm2,明显高于TiNO薄膜 (400mF/cm2).
- 与薄膜 (0.33μWh/cm2) 相比,纳米线样本具有更高的能量密度 (1.35μWh/cm2).
- 第一原则计算支持实验观察TiNO纳米线中的 (110) 方向.
结论:
- 与TiNO薄膜相比,TiNO纳米线的特定电容增加了6倍.
- 纳米线的增强性能归因于它们的高包装密度.
- 薄膜和纳米线形式的TiNO在超级电容电极和电荷存储应用中表现有前途.
更多相关视频
相关概念视频
Equivalent Capacitance
721
From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
721
Equivalent Capacitance
2.2K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
The following strategies are adopted to calculate...
2.2K
Capacitors and Capacitance
9.6K
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...
9.6K
Design Example: Capacitance Multiplier Circuit
1.6K
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
1.6K
Capacitance: Single-Phase And Three-Phase Line
618
In electrical power systems, understanding the capacitance of transmission lines is fundamental for efficient operation.
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...
Single-Phase Lines
Consider a single-phase, two-wire transmission line with equal phase spacing energized by a voltage source. One conductor carries a uniform positive charge, while the other carries an equal negative charge. The capacitance C of the line can be derived from the voltage V between the conductors. For a one-meter section of the line, the capacitance is given...
618


