Technology & Engineering

Low Cost Anodes for Na-ion Batteries

Due to the poor availability of lithium and therefore the rising cost of Li-Ion batteries, interest in potential alternatives is growing. The global abundance of sodium is much higher and therefore costs are lower – sodium carbonate is < 10 % of the cost of an equivalent lithium salt. Sodium ion batteries are therefore expected to disrupt the Li-Ion market and capture a significant market share. Funding a suitable anode material is one of the main challenges remaining in the development of Na-Ion battery technology.

We have developed a hydrothermal carbonisation technology to convert biomass into carbon spheres under mild conditions. The process can be adapted to various biomass sources and provides control over parameters such as particle size, structure, porosity and functionality. These carbon spheres have been show excellent performance as Na-Ion anodes.

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