As the world electrifies, demand for better and more sustainable battery materials keeps climbing. Graphite is central to lithium-ion anodes, but conventional anode-grade graphite is energy-intensive to produce, and major producing regions often rely on coal power, generating a heavy carbon footprint.

A battery materials innovator had developed a way to improve on that, infusing silicon nanowires into graphite to create a higher-performance anode that enables lighter, more efficient and longer-lasting batteries. The open question was environmental: how did it compare to conventional anode-grade graphite on carbon?

The client partnered with Minviro for an independent, science-backed answer. Minviro conducted a life cycle assessment of the anode process, measuring carbon footprint per kg of material alongside water use and resource depletion, and examining how different graphite feedstocks and energy sources changed the picture. The study followed ISO 14040 and 14044 standards, aligned with EU Battery Regulation requirements, and was critically reviewed by an independent panel of LCA experts.

The assessment confirmed a substantially lower carbon footprint per kg of anode material than a conventional blend of natural and synthetic graphite. A major factor was location: the process is modelled on a renewable hydropower grid, in contrast to the coal-powered energy behind much conventional graphite. The engagement also evolved as it progressed, expanding from a straightforward comparison against conventional graphite into multiple feedstock scenarios and a system boundary extension into the battery manufacturing stage.

The result gave the client independently verified, panel-reviewed data to substantiate its environmental claims with automakers, investors and regulators, a credible, low-carbon alternative in a market where unverified claims are common.