By Interestana AI Editorial — AI-drafted, human-overseen. How we report
Factorial Taps Hyundai Supplier For Solid-State Battery Production

Factorial Energy, a developer of solid-state battery technology, announced a significant partnership with SK On, a leading electric vehicle battery manufacturer and a key supplier to Hyundai Motor Group, on October 26, 2023. This collaboration aims to tackle one of the most substantial hurdles in the widespread adoption of solid-state batteries: mass production using existing manufacturing infrastructure. Solid-state batteries are widely considered the next frontier in battery technology, promising higher energy density, improved safety by eliminating flammable liquid electrolytes, and faster charging capabilities compared to current lithium-ion batteries. However, their commercialization has been hampered by difficulties in scaling up production and integrating them into established battery manufacturing processes.
The partnership between Factorial and SK On is designed to leverage SK On's extensive experience in high-volume battery production and its existing manufacturing capabilities. SK On, a subsidiary of SK Innovation, is a major global player in the EV battery market, supplying batteries to major automakers like Hyundai, Kia, and Ford. Factorial, on the other hand, has been developing its proprietary FEST (Factorial Electrolyte System Technology), which utilizes a novel solid electrolyte material. The core challenge the two companies intend to address is the adaptation of existing lithium-ion battery production lines to accommodate the unique requirements of solid-state battery manufacturing. This includes handling solid electrolyte materials, ensuring proper electrode-electrolyte interfaces, and maintaining the structural integrity of the battery cells during high-speed manufacturing processes.
This collaboration represents a critical step towards potentially realizing the commercial viability of solid-state batteries. Previously, many solid-state battery developers have faced challenges in scaling their technologies beyond laboratory settings, often requiring entirely new and expensive manufacturing facilities. By working with an established manufacturer like SK On, Factorial seeks to demonstrate that its solid-state battery technology can be produced cost-effectively and at scale on lines that are either already in place or can be adapted with modifications. This approach could significantly accelerate the timeline for solid-state batteries to reach the consumer market, potentially impacting the electric vehicle industry and other sectors requiring advanced energy storage solutions.
The success of this partnership could pave the way for a new generation of batteries that offer substantial improvements in performance and safety. If Factorial and SK On can successfully demonstrate a scalable and cost-effective manufacturing process, it could lead to wider adoption of electric vehicles with longer ranges and faster charging times, as well as advancements in portable electronics and grid-scale energy storage. The companies have not yet disclosed specific production targets or timelines, but the announcement signals a strong commitment to overcoming the manufacturing barriers that have long held back solid-state battery technology.
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