By zhanqun1 
In the world of batteries, the deterioration of a lithium battery often signals the end of its useful life. However, just like the human body needs treatment when sick, a research team from Fudan University has proposed a revolutionary approach—by “injecting” lithium ions into lithium batteries, revitalizing them and significantly extending their lifespan.
The “Crazy” Idea Becomes a Reality
Led by Peng Huisheng and Gao Yue, professors from the Department of Polymer Science at Fudan University, the team achieved what seemed like a “crazy” idea in the lab. They combined AI technology with organic electrochemistry to design a new molecule called trifluoromethylsulfonyl lithium (CF3SO2Li), which acts as a “lithium medicine” injected into old, degraded batteries to restore their vitality. The research was published in the prestigious journal Nature under the title “External Lithium Supply Technology Breaks the Lithium Shortage and Lifespan Limits of Batteries”.
Challenges of Lithium Batteries and Their Solutions
Lithium batteries have become an indispensable part of modern life, but they face several issues: limited lifespan, damage in low temperatures, and the increasing demand for large-scale energy storage. To tackle these problems, Peng Huisheng and Gao Yue’s team proposed a novel concept: decoupling active lithium ions from the cathode material and using AI to select the most suitable carrier molecules.
This new molecule is not only easy to synthesize and cost-effective but also allows for non-invasive repairs without altering the original structure or manufacturing process of the lithium battery. This means that after multiple “injections,” the issue of lithium battery disposal could become a thing of the past.
Experimental Validation and Future Applications
Experimental results show that lithium batteries treated with this technology show a degradation rate of only 4% after 12,000 charge and discharge cycles, which is equivalent to an electric vehicle (EV) battery lasting 18 years even with daily charging twice. In comparison, conventional EV batteries with daily charging twice will experience a 30% degradation after only 2.73 years.
Additionally, this innovation breaks the traditional limitation that battery materials must contain lithium, making it possible to construct batteries using green, non-heavy metal materials. Currently, the team is working on mass-producing these lithium-ion carrier molecules and collaborating with top international battery companies to convert this technology into a practical product, helping accelerate the development of the new energy sector.
With this major breakthrough, we may soon usher in a new era where lithium batteries are no longer restricted by traditional lifespan limits. Instead, they can be “healed” through simple methods, greatly enhancing their efficiency and lifespan. This is not only a huge leap forward for existing energy storage technologies but also a crucial step toward a more sustainable and environmentally friendly future.