Mitsui Kinzoku, Factorial to scale all-solid-state battery manufacturing
By leveraging Mitsui Kinzoku’s expertise in materials and manufacturing technologies and combining it with Factorial’s advanced technological capabilities, the companies aim to accelerate the realization of next-generation batteries.
US firm Factorial Energy has announced a strategic partnership with Mitsui Kinzoku, a Japan-based producer of sulfide-based solid electrolytes for all-solid-state batteries, to support the industrialization of its Solstice all-solid-state battery platform, according to a press release.
“I am very pleased that we have been able to enter into this joint development agreement with Factorial,” said Dr. Kiyotaka Yasuda, Senior Executive Officer, General Manager, Business Creation Division of Mitsui Kinzoku Company, Limited. “By leveraging Mitsui Kinzoku’s long-established expertise in materials and manufacturing technologies and combining it with Factorial's advanced technological capabilities, we aim to accelerate the realization of next-generation batteries.”
“Mitsui Kinzoku’s foundational electrolyte technology brings critical materials expertise to our work to move Solstice toward commercial deployment,” said Siyu Huang, CEO of Factorial. “We’re not just building a battery. We’re building the connective thread that helps the whole industry move forward together.”
This collaboration follows Factorial’s strategic investments from IQT and POSCO Future M; its first commercial orders for passenger vehicles and aerospace, expanded automotive and industrialization partnership programs, and its June 2026 Nasdaq listing under the ticker symbol FAC, the company said.
