IDTechEx investigates the changing terrain of graphite anodes in lithium-ion batteries

There continues to be lots of excitement regarding new Li-ion anode technologies. The next generation of silicon anode materials are inching closer to commercialization with the promise of improved energy density and rate capability. Lithium-metal and anode-free solutions continue to be explored, while options such as niobium oxides have also garnered some interest for fast-charging batteries. Nevertheless, the good overall performance and low cost of graphite means that it is predicted to maintain its dominance in the Li-ion industry.

Graphite Demand Remains Steadfast

Despite ongoing developments in new anode materials, graphite, the material used for the past 30 years in Li-ion anodes, is forecast to remain the most widely used anode material in Li-ion batteries through the medium term. IDTechEx forecasts that the demand for Li-ion graphite anodes will grow considerably and exceed 2 million tonnes by 2029.

Natural or Synthetic Graphite

Two broad types of graphite are used for Li-ion anode, natural and synthetic (or artificial), each with its own advantages and disadvantages. Natural graphite is generally a lower-cost option than synthetic. It can also offer a slightly higher initial capacity but also tends to have a lower cycle life, C-rate capability, and initial coulombic efficiency. In contrast, synthetic graphite is more expensive than natural graphite due to the higher energy requirements for graphitization, as well as being more difficult to mill into spherical particles, but it also tends to offer longer cycle life and marginally higher initial coulombic efficiency. However, there can be an overlap in the performance and cost of these two types of graphite, and the differences between them have also been closing. Beyond just the type of graphite, various cell design factors such as cathode choice, electrolyte additives, coatings, particle size and distribution, electrode balance, as well as the specification and quality of the graphite product will have a significant impact on eventual cell performance, cost, and cycle life.

Both synthetic and natural graphite continue to be used with blends widely utilized. IDTechEx estimate that there is a roughly even split, by kt sales, between synthetic graphite and natural graphite. However, there has been a slight shift toward natural graphite over the past few years due to cost pressures and high energy prices.

A Changing Landscape?

As with other raw materials, increasing the output of natural graphite to keep up with the rapidly growing demand for Li-ion batteries has proven challenging. The US DoE and the European Commission have included natural graphite in their latest critical raw materials/minerals lists due in part to Li-ion batteries’ important role in transport electrification and stationary storage applications. China’s dominance of graphite anode production also presents a supply risk, though Li-ion graphite anode production outside of China is starting to develop from players such as Syrah Resources, Northern Graphite, and Nouveau Monde in North America, or Talga Resources, SGL Carbon and Vianode (synthetic) in Europe, amongst others.

In addition to diversifying material supply, improved sustainability and ESG metrics will be important factors for new graphite production. Lower energy consumption and embedded emissions will become an increasingly important metric. This is especially true in Europe, with the European Battery Regulation set to implement carbon footprint labels and declarations for Li-ion batteries above 2 kWh in size. This may favor natural graphite and its lower energy consumption, though particulate emissions and acid waste streams from the purification process also need to be carefully managed. Lower cost and low carbon energy from renewable sources could help improve the competitiveness of synthetic graphite in this respect, though it will still be reliant on fossil feedstock. These points help to further highlight the fine balance between natural and synthetic graphite.

Ultimately, the dynamic Li-ion graphite anode market and high growth rate in Li-ion demand will ensure ongoing demand for both synthetic and natural graphite anode materials.

To find out more about IDTechEx’s Li-ion battery market research, please visit

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