A prototype solid-state battery, named the Goliath P1 and developed by UK startup Ilika, has made waves in the electric vehicle (EV) industry due to its significant benefits and implications. The battery achieved a major breakthrough by passing an important safety test known as the nail penetration test.
This test simulates a catastrophic incident that often leads to dangerous thermal runaway—a condition in which traditional lithium-ion batteries, which use liquid electrolytes, can explode or catch fire.
During this test, the Goliath P1, which uses a solid electrolyte, stayed at a temperature below 176°F (80°C). This is much lower than the 1112°F (600°C) often reached in thermal runaway events associated with lithium-ion batteries.
“In the nail penetration tests the P1 cells neither exploded nor caught fire, with external temperatures remaining below 80°C,” said the company in a press release.
Furthermore, the Goliath P1 showed none of the hazardous swelling, rupturing, explosion, or fire that typically occur when traditional lithium-ion batteries fail.
Solid state batteries to boost EVs
Dr. James Robinson, leader of the UK Safebatt Project, which focuses on improving EV battery safety, expressed his excitement about these results.
“While there is still further testing to be undertaken, there seems to be an inherent safety advantage in nail penetration tests for this cell type over conventional state-of-the-art cells,” remarked Robinson.
Solid-state batteries are emerging as a promising technology in the quest for safer and more efficient electric vehicles. As the world moves towards achieving NetZero emissions, EVs are expected to be essential in this transition.
Solid-state batteries, known for their improved safety and high energy density, have the potential to transform the EV industry.
The inherent safety of solid-state batteries , as shown by Ilika’s successful nail penetration test, addresses the significant concerns linked with conventional lithium-ion batteries.
This increased safety could lead to simpler battery pack designs by reducing the need for extra protective packaging. As a result, vehicles could become lighter and safer, with a greater driving range.
Ilika’s big role
This achievement highlights the progress Ilika has made since being founded on research from the University of Southampton twenty years ago.
Over this time, the company has concentrated on materials science, which has drawn attention from major companies like Shell and Toyota.
The development of an electric vehicle-compatible solid state battery, particularly the Goliath P1 prototype with its NMC cathode and silicon anode in a solid state pouch cell configuration, represents a significant step forward in their research and development efforts.
“Ilika has designed solid state cells intended to provide a safer alternative to high-energy lithium-ion batteries,” stated the company’s CEO, Graeme Purdy.
Future plans and potential
Although the battery is still in the research and development phase, Ilika has outlined a clear plan for manufacturing. The company intends to have a mass-producible version available by 2025.
Their strategy includes using existing lithium-ion battery manufacturing infrastructure, which will facilitate a smoother transition to this safer technology. The next step is to establish a pilot facility for megawatt-scale production.
This success highlights the rapid progress being made in solid state battery technology. The Goliath P1’s successful nail penetration test, where it maintained a safe temperature below 80°C and avoided thermal runaway, demonstrates the promising potential of solid state batteries to transform the EV industry and support a more sustainable future.
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