Technical Details
A team from Adelaide University and Imperial College London led by Professor Shi-Zhang Qiao developed a surface modification method for electrodes. This allows lithium and silicon batteries to charge to 85% in 6 minutes and 91.4% in 10 minutes while maintaining 240.4 Wh/kg energy density.
How It Works
The technique creates catalytic centers on the anode surface that selectively attract anions to the interface. This forms a dense inorganic protective layer (SEI) enriched with lithium fluoride. The layer stabilizes the electrode and creates microchannels for rapid lithium ion transport.
Test Results
- Coulombic efficiency of modified anode: 99.94%
- 76% capacity retention after 500 six-minute charge cycles
- Does not disrupt ionic conductivity
Industry Impact
The technology could reduce EV charging times to match gasoline refueling. Researchers are now testing it in full-scale battery modules. If proven effective, it could enable widespread adoption of ultra-fast charging without compromising battery lifespan.