Flow battery graphite felt specifications

What are the properties of graphite felt?

Polyacrylonitrile-based graphite felt has the properties of high temperature resistance, corrosion resistance, low thermal conductivity, large surface area and excellent electrical conductivity. It has become the preferred material for flow battery electrodes, but its chemical activity is poor.

Can graphite felt be used as electrode for iron-chromium flow battery?

In this paper, SnO 2 -coated graphite felt was used as the electrode of the iron-chromium flow battery, and the comprehensive scanning electron microscope, X-ray photoelectron spectroscopy, resistance, lyophilicity, electrochemical performance and charge-discharge test were analyzed.

What size battery felt do you supply?

We supply battery felts in standard sizes up to 1350 mm (53") in width in 25 m (82 ft) rolls. Beyond that, we produce carbon and graphite felts in customer- specific dimensions. The entire in-house value chain ensures the quality of SIGRACELL ® battery felts from SGL Carbon and thus contributes to optimizing battery performance.

Can Sno 2 -coated graphite felt electrodes be used in iron-chromium flow batteries?

When the current density was 150 mA cm −2, the energy efficiency of the SnO 2 /F-10 vanadium flow battery was increased from 52.3% to 68.7%. There is no detailed report on the application of SnO 2 -coated graphite felt electrodes in iron-chromium flow batteries.

What is the coulombic efficiency of graphite felt electrode?

When the current density is 250 mAcm −2, the coulombic efficiency of the battery (electrode TGF-2) assembled with SnO 2 -coated graphite felt electrode can reach 84%. The preparation technology of SnO 2 -coated graphite felt to improve electrode performance is expected to provide new ideas for the design of industrial electrodes.

Why is graphite felt a good electrolyte?

The graphite felt electrode has stable electrochemical performance [ 11 ], high mechanical strength [ 12 ], and large surface area [ 13 ], and its porous structure is conducive to the flow and mass transfer of the electrolyte [ 14 ], and has a great impact on the efficiency and capacity of iron-chromium flow batteries.