Professional Perfluorinated Ion-Exchange Membrane(PIEM) and Vanadium Redox Flow Battery manufacturer in China

Vanadium electrolyte

The positive and negative electrolytes of all vanadium redox batteries (VRB) use a single multivalent element-vanadium, which makes that the electrolyte properties can't be affected by the mutual penetration of the positive and negative electrolytes during use, so that the battery has a longer life.

The vanadium electrolyte SY-1.5M has a unique formula, high conductivity, large operating temperature range, no heat exchanger, good stability, less vanadium ion migration and small liquid level changes during charging and discharging. We solve the problem of positive and negative electrolytes. We have also solved the problem of energy attenuation. Our electrolyte is the best choice for vanadium batteries.

The potential diagram of vanadium in acid medium is as follows:

vanadium potential pattern

The electronic configuration of vanadium is 3d34s2, and its chemical properties are very active. The electrolyte used in VRFB is a sulfuric acid solution of vanadium ions, but the ion valence states of the two battery halves are different under different charge states.
Positive half-cell: a sulfuric acid solution with a discharge state of V (IV) and a sulfuric acid solution with a charge state of V (V);
Negative half-cell: a sulfuric acid solution with a discharge state of V(II) and a sulfuric acid solution with a charge state of V(II).

Technical Specifications of Vanadium electrolyte:

Concentration

1.5M

Density

1.3 g/cm3

Energy Density

20 kWh/m3

Specific Energy

15 kWh/t

Charge Voltage Max.

1.64 VDC/Cell

Discharge Voltage Max.

1.0 VDC/Cell

Working Temperature

-30—60 ℃

 




Our Mission

Continuously provide the Ion-Exchange Membrane with lower energy consumption and excellent performance for Green Energy and Chlor-Alkali Industries
Continuously improve the technology of environmentally friendly

Contact Us

 Dongfeng Street, Weifang Shandong China

 (0086) 536-821-6345