Japanese automaker Toyota has announced its impending ability to manufacture next-generation solid-state batteries for electric vehicles (EVs) at the same rate as current lithium-ion batteries, marking a significant step forward in the pursuit of commercializing this transformative technology. Solid-state batteries have long been heralded as a potential game-changer for EVs, offering solutions to issues like charging time, capacity, and safety concerns. Toyota aims to achieve mass production of solid-state batteries by 2027 or 2028.

The successful realization of Toyota's objective could usher in a new era where electric cars powered by solid-state batteries boast a range of up to 1,200 kilometers and can recharge in as little as 10 minutes. Nevertheless, large-scale production of solid-state batteries is fraught with challenges and substantial costs. These challenges encompass the batteries' vulnerability to moisture and oxygen, as well as the mechanical pressure required to prevent dendrite formation, which can lead to short circuits.

The assembly process for solid-state batteries presents one of the most critical and challenging phases. During this stage, it's imperative to stack the layers of cathode-anode cells rapidly and precisely without causing any damage to the materials. Toyota's engineers have indicated that they are on the verge of achieving the required stacking speed and intend to scale up production for comprehensive quality assessments.

Toyota has been making substantial advancements in the development of solid-state batteries. In September, the company welcomed journalists and investors to tour its Teiho plant in Aichi prefecture, where they are preparing for large-scale production of these batteries. Furthermore, Toyota has collaborated with the energy group Idemitsu Kosan to create a solid-state battery material known as the sulphide solid electrolyte, aimed at addressing durability concerns.

While the progress achieved by Toyota and other companies in this field is promising, challenges persist, and there have been past delays in production schedules. Nevertheless, Toyota's President, Koji Sato, remains optimistic, emphasizing the importance of introducing solid-state batteries to the market and subsequently considering volume expansion. Notably, other companies like CATL and Samsung SDI have also made noteworthy strides in solid-state battery production.