Innovative breakthroughs in stack batteries and future market trends

In terms of technological innovation, stack battery technology has made significant progress in recent years. For example, Volterion has developed a new stack structure for redox flow batteries that simplifies the production process and improves efficiency by using graphite and carbon black as raw materials and low-temperature pulverization and mixing to make plastic pellets that are rolled into flakes.

In addition, the hydrogen fuel cell (FC) stack developed by Honda Giken Kogyo employs a unique “V Flow” structure and “Wave Flow Separator,” which enables a lightweight and compact design that improves power generation efficiency and reduces emissions.

In terms of application expansion, stack battery technology is gradually applied to different industries and scenarios. For example, in the field of electric vehicles, multi-layer or stacked solid-state cells are crucial for replacing liquid technology. Meanwhile, solid-state batteries are regarded as one of the preferred solutions for next-generation batteries due to their high reliability and safety.

Stacked batteries are also used in energy storage systems, such as the Scalable Electricity Storage Unit developed by Fraunhofer ISE with an electrical power of 100 kWel and a capacity of 1 MWhel for microgrid systems or grid-connected storage systems.

From the perspective of market demand, global battery demand is expected to expand rapidly at a CAGR of about 30%, with the electrification of transportation and surging demand for energy storage becoming the main drivers. Particularly in China, the power battery industry has made remarkable progress and development in 2023, with significant growth in cumulative sales, vehicle installations and exports.

Additionally, with the development of all-solid-state battery technology, China’s energy storage battery shipments are expected to reach 1,551GWh by 2029, with a CAGR of around 40%.