Mitsui Kinzoku Co., Ltd.

Factorial Energy shares jumped 14.4% in Thursday's trading after the company said it will partner with Japan's Mitsui Kinzoku to accelerate the global scale-up of its Solstice all-solid-state battery platform. Mitsui Kinzoku produces sulfide-based solid electrolytes for all-solid-state batteries and is one of few companies worldwide with foundational technology in this space, Factorial said. The Japanese company also produces ultra-thin copper foil and holds an estimated 90% share of the semiconductor market for that foil. Mitsui Kinzoku Senior Executive Officer Kiyotaka Yasuda said the two companies aim to accelerate the realization of next-generation batteries by combining Mitsui Kinzoku's long-established expertise in materials and manufacturing technologies with Factorial's advanced technological capabilities. Factorial Energy shares began trading on Nasdaq in June following the completion of its business combination with Cartesian Growth Corporation III.