相关实验视频
Updated: Jun 13, 2025

09:04
Fabrication of VB2/Air Cells for Electrochemical Testing
Published on: August 5, 2013
11.9K
双单原子调节石墨感应电极增强高功率密度流电池
Fei Xing1,2, Qiang Fu1,3, Feng Xing1,3
1Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Journal of the American Chemical Society
|September 16, 2024
概括
用于大规模储能应用的流电池 (VFB) 的碳电极上的单原子类催化剂显著提高了功率密度和效率.
科学领域:
- 电化学
- 材料科学
- 能量储存
背景情况:
- 流电池 (VFB) 对于电网规模的能源存储具有前景.
- 由于电化学极化导致的低功率密度限制了VFB的性能.
研究的目的:
- 开发一种新型电极材料以提高VFB功率密度和效率.
- 在VFB中研究单原子的催化机制.
主要方法:
- 用N-doped碳调节石墨 (Bi SAs/NC@GF) 支持的单个原子的制造.
- 在现场进行电化学表征和理论计算.
- 组装和测试VFB单个电池和5kW电池.
主要成果:
- 双SA/NC@GF具有较高的电催化活性和稳定性.
- 优化的Bi-N4配置增强了活跃部位并减少了极化.
- 在240 mA cm-2下,VFB单电池实现了81.1%的能效,而NC@GF则达到70.5%.
- 一个5千瓦的VFB堆稳定运行了400多个周期.
结论:
- 单原子催化剂有效地提高了VFB的性能.
- 对于高功率,低成本的VFB,Bi SAs/NC@GF提供了一个可扩展的解决方案.
相关概念视频
Batteries and Fuel Cells
27.1K
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...
27.1K
Voltammetry: Overview
1.3K
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...
1.3K

