At InterBattery 2024 in Korea, Samsung SDI unveiled a suite of “super-gap” battery technologies encompassing fast charging and ultra-long life as well as its mass-production readiness roadmap for its all solid-state battery (ASSB), a beyond lithium-ion battery solution with a targeted top energy density of 900Wh/L.

The ASSB roadmap illustrates Samsung SDI’s preparations from development to mass-production of ASSB. Its energy density jumps up by 40% from the level posted by P5, Samsung SDI’s own prismatic battery product currently under production.

Samsung’s battery arm plans to implement the industry-top level energy density in its ASSB product by leveraging the company’s proprietary solid electrolyte and anode-less technologies, the latter of which enables higher cathode capacity.

In December 2023, Samsung SDI established a dedicated control tower for the ASSB business. An all solid-state battery pilot line was set up in the Samsung SDI R&D Center in Suwon last year and is currently delivering protoype samples. Samsung SDI sys that every aspect of its plan for mass-producing all solid-state battery in 2027 is well on track, from development, production line, project launch to supply chain management.

Ultra-fast charging from 8 to 80% in just 9 minutes; over 20-year long life battery; 20% lighter cell-to-pack platform. Samsung SDI also unveiled its ultra-fast charging technology that reaches 80% charge from 8% in just 9 minutes, an unprecedented feat in the industry.

This feature is made possible by optimizing lithium-ion transfer path and enabling low resistance. The company aims to carry this technology development to a mass-production phase by 2026. This technology is expected to cut charging time significantly compared to P5.

Samsung SDI also plans to develop and mass-produce a battery solution that lasts more than 20 years by 2029. Such longer battery life, more than double of battery life of products currently available in the market, will be achieved by strengthening durability of materials going into a battery, according to the company’s plan.

Samsung SDI also exhibited a prismatic battery form factor in which the terminal is moved side-ways in contrast to a conventional top terminal, in order to enhance energy efficiency and cooling efficacy. Another concept displayed is cell-to-pack (CTP) technology for prismatic cells. Samsung SDI seeks to show how it reduces the number of components by more than 35% and the weight by 20%, which serves to materialize high energy density and cost reduction.