Chinese researchers have announced a breakthrough in battery technology, developing a prototype that replaces lithium with iron, a material that is approximately 80 times cheaper and far more abundant. The new battery, reported by state media on May 13, 2026, uses iron as the cathode material, significantly reducing costs while maintaining competitive energy density.
The research, led by scientists at the Dalian Institute of Chemical Physics, part of the Chinese Academy of Sciences, was published in the journal Nature Energy on May 12, 2026. The team demonstrated a rechargeable iron-based battery with a capacity of 200 watt-hours per kilogram, comparable to some lithium-ion batteries. Iron is about 80 times cheaper than lithium and is widely available, making it easier to mine and process.
This development could address key challenges in the energy storage industry, including supply chain constraints and environmental concerns associated with lithium mining. The researchers noted that the battery uses a novel electrolyte that prevents corrosion and improves cycle life, with tests showing over 1,000 charge-discharge cycles with minimal degradation.
While the technology is still in the prototype stage, the researchers are optimistic about scaling up production within the next five years. The Chinese government has invested heavily in battery research as part of its push for electric vehicle adoption and renewable energy storage.
