UP In Arms, page-78

Fair enough on the article age.
Depends on if we are looking for info comparing chemistries, or info comparing companies/installations/deployment etc.
I was reading through the RFX Business plan and noticed on page 7 the claim of the ZBM having a higher energy density than Vanadium or Lead Acid.
So I went off to find a reference to support this claim.
This is a article from 2015. (Hard to find a Energy Density specification for VSUN's flow batteries. )
Long article. Search for figure 18.2.
The Yellow text is hard to read, but I believe it to read VRB.
https://www.sciencedirect.com/topics/engineering/vanadium-redox-flow-battery