[SMM Analysis] Chinese Scientists Break Through the Lifespan Limit of Lithium Batteries, Giving Scrap Batteries a "Second Life" with a Single Injection

SMM, February 15:

In the early hours of February 13, Beijing time, the international top-tier journal *Nature* published a groundbreaking research achievement by the team of Huisheng Peng and Yue Gao from Fudan University as a cover paper. Through "precision medicine"-style innovative technology, they successfully achieved a breakthrough in extending the lifespan of lithium batteries by 10-100 times compared to the original level, potentially reshaping the global new energy industry landscape.

Breaking a Century-Old Industry Bottleneck
Since their inception in 1990, traditional lithium batteries have been constrained by a lifespan limit of 6-8 years. The core issue lies in the gradual depletion of active lithium ions in the cathode material during charge and discharge cycles. Once the loss of lithium ions reaches a critical threshold, the battery becomes scrap, even if other components remain intact. This results in tens of thousands of metric tons of end-of-life batteries annually, causing not only resource wastage but also severe environmental challenges.

The Fudan team proposed an innovative "medical thinking" solution: akin to injecting a stimulant into a failing organ, they developed a method to inject a specially formulated "molecular agent" into used batteries to precisely replenish the lost lithium ions. This carrier molecule, lithium trifluoromethanesulfonate (CF3SO2Li), enables batteries to retain 96% of their original capacity even after tens of thousands of charge-discharge cycles, revolutionarily extending the cycle life from the current 500-2,000 cycles to 12,000-60,000 cycles.

AI Empowering Molecular Design Revolution
To realize this concept, the research team broke away from traditional scientific paradigms by creatively integrating artificial intelligence with organic electrochemical technology. By constructing a digital model encompassing over ten key parameters, such as electrochemical activity, decomposition voltage, and stability, they utilized unsupervised machine learning to screen ideal carriers from a vast molecular database. After four years of R&D, the lithium carrier molecule not only demonstrated exceptional performance but also kept its cost within 10% of the total battery cost, showcasing significant commercial potential.

Redefining the Industrial Ecosystem Blueprint
This technological breakthrough brings three revolutionary changes: achieving the first-ever non-destructive battery repair, opening up a new "circular economy" model; breaking the traditional rule that cathode materials must contain lithium, paving the way for green and environmentally friendly battery R&D; and overturning the conventional "scrap-and-recycle" battery disposal approach. The research team has already initiated large-scale preparation and established deep collaborations with leading global battery enterprises.

"This is not just a technological breakthrough but a reconstruction of the industrial ecosystem," said Professor Huisheng Peng. "In the future, with regular 'vaccine-style' maintenance, battery lifespans could achieve exponential growth, fundamentally addressing resource wastage and environmental pollution." As the industrialisation of this technology accelerates, the global new energy industry is expected to undergo transformative changes in the next decade.

SMM New Energy Research Team

Cong Wang 021-51666838

Rui Ma 021-51595780

Disheng Feng 021-51666714

Ying Xu 021-51666707

Yanlin Lü 021-20707875

Yujun Liu 021-20707895

Xiaodan Yu 021-20707870

Zhicheng Zhou 021-51666711

He Zhang 021-20707850