Redflow NEWS & EVENTS, page-1451

cheers SynQ.... excellent Ai - I hadn't come across this one before.

compare zinc bronzine flow battery tech with vanadium flow battery tech

Sources

Lithium-ion battery VS Vanadium Redox Flow Battery( VRFB )

linkedin

·

1

Flow Batteries Explained | Redflow vs Vanadium | Solar Choice

solarchoice

·

2

Analysis of different types of flow batteries in energy storage field

tycorun

·

3

View 2 more

Answer

Zinc-bromine flow batteries and vanadium flow batteries are both types of redox flow batteries (RFBs) used for energy storage. Here's a comparison of the two based on the provided sources:

1. Chemistry and Operation:
   • Both zinc-bromine and vanadium flow batteries are characterized by separate positive and negative solutions, which operate independently, eliminating the issue of cross-contamination
     1
     .
   • Zinc-bromine flow batteries use a Br-/Br2 electric pair for the cathode and a Zn2+/Zn electric pair for the anode, while vanadium flow batteries use vanadium solutions at different valence states
     3
     .
2. Cost and Materials:
   • Zinc-bromine flow batteries can achieve relatively low costs as the key components, including electrodes and diaphragm materials, are mostly made of plastic, making them free of precious metals and recyclable
     1
     .
   • Vanadium flow batteries, on the other hand, have a higher initial investment cost, as the cost of vanadium electrolyte accounts for a significant portion of the battery cost
     3
     .
3. Efficiency and Temperature Range:
   • The efficiency of zinc-bromine flow batteries on the DC side is greater than 80%, and the working temperature can range from -20℃ to 70℃, which is a significant advantage compared to vanadium flow batteries
     1
     .
   • Vanadium flow batteries, particularly vanadium redox flow batteries (VRFBs), are known for their durability, safety, and long service life, making them a promising solution for large-scale grid energy storage
     5
     .

In summary, zinc-bromine flow batteries offer advantages such as low cost, high efficiency, and a wide working temperature range. On the other hand, vanadium flow batteries, particularly VRFBs, are known for their durability and long service life, making them suitable for large-scale grid energy storage despite the higher initial investment cost. Each technology has its own set of advantages and considerations, and the choice between the two would depend on specific application requirements and cost considerations.