BOSTON–(BUSINESS WIRE)–Recent announcements from solid-state battery developers suggest that automotive deployments in electric vehicles will begin in the near term. However, the latest Strategy Analytics Electric Vehicle Service (EVS) report, Can Solid-State Batteries Reach Mass Production? suggest delays in battery electric vehicle rollouts until 2030.

Toyota has announced that the first deployment of its solid-state battery cells will be in hybrid, not battery-electric, models in 2025. The technology trial was originally scheduled to take place during the 2020 Tokyo Olympics, but this development was delayed by technical problems. challenges as well as the COVID-19 pandemic. Toyota’s solid electrolyte is sulfide-based, requiring a moisture-free production environment that would otherwise be susceptible to generating hydrogen sulfide gas, which threatens battery cell performance.

“Other solid electrolytes have difficulty conducting lithium ions between the electrodes,” noted Kevin Mak, principal analyst at Global Automotive Practice (GAP). “Then there are challenges in producing these electrolytes, including the need for high temperatures and complicated processes, which currently limit the ability to achieve volume production and sustain high costs. Additionally, the solid structure and fused components in solid-state battery cells are susceptible to delamination when using a silicon anode and poses a challenge for recycling. The dendrite problem does not go away either, as tiny cracks in the solid electrolyte can occur.

With the higher cost, early deployments will be limited to high-end models until technology breakthroughs and production maturity allow volume production of battery electric vehicles in the 2030s. solid-state batteries and implementation in hybrid designs will provide the testbeds for true solid-state battery technology.

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