Heterojunction energy storage battery
The Fe-based anode of sodium-ion batteries attracts much attention due to the abundant source, low-cost, and high specific capacity. However, the low electron and ion transfer rate, poor structural stability, and shuttle effect of NaS 2 intermediate restrain its further development. Herein, the Fe 3 O 4 /Fe/FeS tri-heterojunction node spawned N-carbon …