IN SUMMARY
Why graphite's carbon footprint is far higher than the databases suggest
Why graphite's carbon footprint is far higher than the databases suggest
Graphite is in around 96% of lithium-ion battery anodes, with each battery needing 10 to 15 times more graphite than lithium. Despite that, its environmental footprint is often overlooked and, more importantly, underestimated. Producing anode-grade graphite is highly energy-intensive, and much of the world's supply is made in coal-dominated grids such as Inner Mongolia, where low-cost power carries a high carbon cost. Minviro modelled natural and synthetic graphite production using higher-quality, more recent data and found the true climate impact can be up to ten times higher than published values.
Graphite is in around 96% of lithium-ion battery anodes, with each battery needing 10 to 15 times more graphite than lithium. Despite that, its environmental footprint is often overlooked and, more importantly, underestimated. Producing anode-grade graphite is highly energy-intensive, and much of the world's supply is made in coal-dominated grids such as Inner Mongolia, where low-cost power carries a high carbon cost. Minviro modelled natural and synthetic graphite production using higher-quality, more recent data and found the true climate impact can be up to ten times higher than published values.
Graphite is in around 96% of lithium-ion battery anodes, with each battery needing 10 to 15 times more graphite than lithium. Despite that, its environmental footprint is often overlooked and, more importantly, underestimated. Producing anode-grade graphite is highly energy-intensive, and much of the world's supply is made in coal-dominated grids such as Inner Mongolia, where low-cost power carries a high carbon cost. Minviro modelled natural and synthetic graphite production using higher-quality, more recent data and found the true climate impact can be up to ten times higher than published values.
The databases understate the impact severely. For coal-based grids like Inner Mongolia, the calculated carbon footprint of producing 1 kg of anode-grade graphite is around 800% higher than the commercial database value for natural graphite, and around 1,000% higher for synthetic.
The databases understate the impact severely. For coal-based grids like Inner Mongolia, the calculated carbon footprint of producing 1 kg of anode-grade graphite is around 800% higher than the commercial database value for natural graphite, and around 1,000% higher for synthetic.
The databases understate the impact severely. For coal-based grids like Inner Mongolia, the calculated carbon footprint of producing 1 kg of anode-grade graphite is around 800% higher than the commercial database value for natural graphite, and around 1,000% higher for synthetic.
Grid mix is the decisive variable. With all other inputs identical, where graphite is processed, and how that electricity is generated, can cause large variation between operations, especially for synthetic graphite, which depends on electricity at every stage.
Grid mix is the decisive variable. With all other inputs identical, where graphite is processed, and how that electricity is generated, can cause large variation between operations, especially for synthetic graphite, which depends on electricity at every stage.
Grid mix is the decisive variable. With all other inputs identical, where graphite is processed, and how that electricity is generated, can cause large variation between operations, especially for synthetic graphite, which depends on electricity at every stage.
Natural and synthetic differ in their hotspots. Synthetic graphite's impact is dominated by energy use in graphitisation and roasting plus embodied petroleum coke, while natural graphite's impact comes more from energy in purification alongside reagents and fuel.
Natural and synthetic differ in their hotspots. Synthetic graphite's impact is dominated by energy use in graphitisation and roasting plus embodied petroleum coke, while natural graphite's impact comes more from energy in purification alongside reagents and fuel.
Natural and synthetic differ in their hotspots. Synthetic graphite's impact is dominated by energy use in graphitisation and roasting plus embodied petroleum coke, while natural graphite's impact comes more from energy in purification alongside reagents and fuel.
