| Effect of different factors on the performance of graphite felt electrode |
| graphite felt |
The parameters such as density of graphite felt electrode material, moisture absorption rate, resistivity and so on have effect on the performance of graphite felt electrode.
Electrode material is the key component of vanadium battery, Composite bipolar plate electrode with good electrochemical performance and not easy to be etched with the electrode made of conductive plate and graphite felt. At present, this kind of electrode is widely studied and used in liquid flow cell.
In the composite bipolar plate, graphite felt is the main electrochemical reaction place of vanadium battery, and the performance of graphite felt directly affects the electrochemical performance of vanadium battery. At present, there is no special for liquid flow battery production of graphite felt, so need to choose appropriate graphite felt to do the electrode, to get a higher energy than the vanadium battery.
Graphite felt the specific surface area is the important parameters which influence the performance of vanadium battery, the greater the surface area of the graphite felt, can provide more reaction sites, but specific surface area is not reflect the most intuitive parameters of reaction place, decided the reaction area provides the ability to the most intuitive parameters is effective porosity. Through the determination of the rate of graphite felt liquid electrolyte can directly reflect the effective porosity of graphite felt materials.
The resistivity of graphite felt is the most basic performance parameter of graphite felt, especially for vanadium battery.
The resistivity of graphite felt has a great influence on the voltage drop of vanadium battery, and directly affects the output power of the vanadium battery. The effective porosity has a key influence on the graphite felt.
|
|
|
