Cobalt is used in the cathodes of almost all lithium-ion batteries today, stabilizing them and boosting energy density. But this wonder material is scarce, expensive and toxic.
The fundamental difference between conventional and flow batteries is that energy is stored in the electrode material in conventional batteries, while in flow batteries it is stored in the electrolyte.
Abraham explained: “From our experience, at least small
Flow batteries have a chemical battery foundation. In most flow batteries we find two liquified electrolytes (solutions) which flow and cycle through the area where the energy conversion takes place.
Due to their comparably high energy density, the most common and technically mature flow batteries use vanadium compounds as their electrolytes. These also bring the advantage that such systems use only
The technology''s characteristics, including its bulk, weight, and lower energy density, mean flow batteries are not practical for mobile uses like electric vehicles or consumer electronics.
Unlike lithium-ion batteries, which require rare and often environmentally damaging materials like cobalt and nickel, many flow batteries use more abundant and recyclable materials, making them a greener choice.
Abraham explained: “From our experience, at least small amounts of cobalt are needed in the material because it appears to help the rate performance—the rate at which the power is delivered.”
Flow batteries are a new entrant into the battery storage market, aimed at large-scale energy storage applications. This storage technology has been in research and development for several decades, though is
Environmentally Friendly: Many flow battery technologies use environmentally benign materials like vanadium, iron, or zinc, which are more abundant and less harmful to the environment than the rare
The problem is in their size and capacity. As small elements, those batteries are viable. However, if you try to use it on a grid-scale, it occurs to be quite expensive due to the cost of materials for
Scelto Energy Africa is a leading energy storage equipment manufacturer and integrator based in South Africa, serving the African market. We specialize in lithium-ion batteries for residential, commercial and industrial use, system-level battery management systems (BMS) for optimal performance and safety, energy conversion systems (PCS) for efficient power flow, energy storage battery system cabinets with integrated monitoring, communication cabinets for telecom and data centres, commercial & industrial energy storage cabinets for factories and warehouses, integrated PV-storage systems for seamless solar plus storage operation, distributed energy resources for microgrids and off-grid applications, and deep discharge battery technology for extended cycling. As a full-service provider, we also offer containerised BESS, modular battery racks, backup emergency power, and zero‑carbon microgrids. Our advanced lithium‑ion and sodium‑ion solutions ensure safety, scalability, and high performance for residential, commercial, industrial, and utility projects across Africa.
Our modular energy storage portfolio ranges from compact lithium-ion batteries to 20ft/40ft mobile containers and outdoor all-in-one storage cabinets with IP54 protection. We are a leading energy storage equipment manufacturer, offering communication cabinets for 5G/telecom, server racks for data centers, and IP54 rated enclosures for harsh environments. Our stackable design allows flexible capacity expansion, while our grid-forming technology ensures stable off‑grid operation. Whether for off‑grid power systems, backup emergency power, integrated PV-storage or large zero‑carbon parks, our products feature advanced thermal management, deep discharge cycling, and compliance with African and international standards. We also provide professional energy storage system installation and after‑sales support across Africa.