Mastodawn

Zn-Br sulfamate battery stability

On a previous post I discussed my first attempts at reproducing the Na-sulfamate based Zn-Br battery published by a group of Chinese researchers. My results showed that the chemistry works mostly as they showed, but I was unable to reproduce both the capacity and stability properties of their testing results. This post summarizes some additional research results I obtained with this chemistry and why, I believe, my results have been unable to match theirs. From the get go, my results showed […]

https://chemisting.com/2026/03/23/zn-br-sulfamate-battery-stability/

danielfp Feb 20

Reproducing Zn-Br flow batteries using Sodium Sulfamate

A recent Chinese Nature paper showed how Sodium sulfamate can be used in Zn-Br batteries to sequester active Br2 into an N-bromosulfamate that is much less aggressive, much more water soluble and even more easily electrochemically reversible than elemental bromine. I also wrote a recent post discussing the potential use of nicotinamide to achieve this (plot twist, it doesn't work as the nicotinamide Zn complex is not very soluble). In today's post I want to share with you my attempts at […]

https://chemisting.com/2026/02/20/reproducing-zn-br-flow-batteries-using-sodium-sulfamate/

danielfp Feb 13

Could we create a Zn-Br flow battery using Nicotinamide?

Zinc bromide flow batteries have been researched very extensively during the past 30 years. There are many advantages to this chemistry, very high potential (~1.8V), high efficiencies, symmetric electrolyte and low reagent costs. Nonetheless, the disadvantages are also huge: zinc dendrites, hydrogen evolution, bromine corrosion, etc. Despite all the development, a lot of these disadvantages remain insurmountable. A recent nature paper has disrupted the field by using sulfamate ions as a […]

https://chemisting.com/2026/02/13/could-we-create-a-zn-br-flow-battery-using-nicotinamide/

Tina M Casey Nov 11

US energy storage startup pitches quinones to replace vanadium (not vibranium!) in flow batteries.

https://cleantechnica.com/2025/11/10/made-in-the-us-flow-battery-technology-is-heading-overseas/

#energy #energystorage #battery #flowbattery #renewableenergy #energytransition #datacenters #repurpose #sustainable #sustainability #us #startups #innovation #india #renewables #greenenergy #cleanenergy

Made-In-The-US Flow Battery Technology Is Heading To India

The California flow battery startup Quino Energy is continuing to forge new connections in the US while expanding its horizons into India.

CleanTechnica

Tina M Casey Nov 11

US energy storage startup pitches quinones to replace vanadium (not vibranium!) in flow batteries.

https://cleantechnica.com/2025/11/10/made-in-the-us-flow-battery-technology-is-heading-overseas/

Made-In-The-US Flow Battery Technology Is Heading To India

The California flow battery startup Quino Energy is continuing to forge new connections in the US while expanding its horizons into India.

CleanTechnica

Andrew Pollock Oct 23

I feel like a very inattentive shareholder, I completely missed this:

https://www.abc.net.au/news/science/2024-12-05/redflow-australian-battery-manufacturer-collapse-defects/104650074

First Tritium, now this. Not a great look for Australian innovation or manufacturing, although this article's explanation explains some of the chicken-and-egg challenges they faced doing something commercially niche and not at a sustainable scale.

I really like the promise of the technology because it lacked the fire risks of lithium ion, and also the charge retention seemed great. #rip #flowbattery

#cleanenergy #australianinnovation #fail

Redflow was the great hope of Australian manufacturing. Its collapse left customers with broken batteries

Redflow had political backing and a soaring ambition to sell energy storage to the world, but its $10,000 batteries regularly failed within months of installation leaving customers out of pocket.

ABC News

danielfp Sep 15, 2025

Studying a WiSE based all-Fe chemistry using our flow battery kit

All-Fe flow batteries are very promising due to iron's high abundance, low toxicity and low cost. In these batteries, FeCl2 is used as the main active salt in solution. When charging Fe2+ gets reduced to Fe metal on the anode while Fe2+ gets oxidized to Fe3+ on the cathode. However, these batteries suffer from a fundamental problem that has made their large scale adoption very difficult up until now. Cyclic voltammetry of 1M FeCl2 and 4.5M CaCl2 using an Ag/AgCl reference electrode and a […]

https://chemisting.com/2025/09/15/studying-an-all-fe-chemistry-using-wise-in-our-flow-battery-kit/