Why Sodium Batteries?
There are number of reasons for Beyond Batteries moving to Sodium and I'll elaborate on these further in this blog post, but here are the headlines:
Lithium - Becoming a dirty word in the storage industry
Safety - Providing industry confidence
Performance - Hitting the marks at extreme temps
Sustainability - Cleaning the battery industry
Cost - Reducing the outlay
GeoPolitics - Reducing dependencies
❌ Lithium - Becoming a Dirty Word in the Storage Industry
Lithium-ion has powered the modern energy revolution, but its reputation is becoming increasingly complicated. Supply chain volatility, ethical concerns around mining practices, and environmental impact are all under growing scrutiny.
From cobalt-linked human rights issues to lithium extraction’s heavy water usage, the narrative is shifting. For many businesses and consumers, lithium is no longer the default “clean” solution it was once perceived to be. Sodium-ion sidesteps many of these concerns entirely, using far more abundant and less controversial materials.
✅ Safety - Providing Industry Confidence
Safety is one of sodium-ion’s strongest selling points.
Lithium batteries, while generally safe when managed correctly, carry well-documented risks—particularly thermal runaway, which can lead to fires that are difficult to extinguish. This has made certain sectors (marine, residential storage, transport, and public infrastructure) increasingly cautious.
Sodium-ion chemistry is inherently more stable. It operates with a significantly reduced risk of thermal runaway, offering greater tolerance to abuse (overcharge, puncture, heat exposure) with a lower fire risk and easier transportation and regulatory handling.
⚡Performance - Hitting the Marks at Extreme Temperatures
One of the standout advantages of sodium-ion batteries is their performance across a wider temperature range.
Lithium batteries are known to struggle in colder environments, with reduced efficiency, slower charge rates, and capacity loss. Sodium-ion, by contrast, maintains more stable performance in low temperatures.
This resilience reduces the need for heating systems within batteries, simplifying installations and lowering total system cost.
🌳 Sustainability - Cleaning the Battery Industry
Sustainability isn’t just about emissions, it’s about the full lifecycle of a product.
Sodium is one of the most abundant elements on Earth, and its extraction is significantly less resource-intensive than lithium. Sodium-ion batteries also avoid the need for materials like cobalt and nickel, which are both environmentally and ethically problematic.
For a sector under pressure to genuinely “green” itself, sodium represents a meaningful step forward, which shouldn't be overlooked
💰 Cost - Reducing the Outlay
Cost has always been a barrier to large-scale energy storage adoption and while lithium prices have fluctuated wildly in recent years, sodium offers a more stable and potentially low cost alternative.
To get these costs down from where they are, we need greater market uptake which will drive the mass production, enabling a decrease in production costs
🌍 Geopolitics - Reducing Dependencies
Battery supply chains are no longer just an economic issue, they’re a geopolitical one.
Reducing dependency on China for the production of renewable technologies is a key focus for us, currently most of the worlds battery cells are produced there. Europe and the west considers China to be politically unreliable, so domestically producing cells and packs is becoming very attractive to the west.
Sodium changes that dynamic as nearly every country on the planet has access to the primary minerals.
The Future of Sodium
As we continue to grow our ranges and services, we are looking to the future with optimism. We strongly feel that using Sodium batteries is the best thing for the planet, businesses and accelerating the transition to net zero.
I hope you've found this interesting, please reach out for further info.
All the best
Colin Fulker
Managing Director