SMRTR Science & EngineeringSep 9, 2026Interesting Engineering

New iron strategy lifts sodium batteries to 206 Wh/kg with 87.8% retention rate

SMRTR summary

Nanjing University researchers boosted sodium-ion battery performance by embedding iron ions into the cathode, stabilizing its structure and improving oxygen reaction reversibility to 99%, achieving 206 Wh/kg with 87.8% capacity retention after 100 cycles.

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