Defect engineering of disordered carbon anodes with ultra-high heteroatom doping through a supermolecule-mediated strategy for potassium-ion hybrid capacitors

HIGHLIGHTS

SUMMARY

The NSLPC700 anode had the best capacity retention of 93.6% and a reversible capacity of 402 mAh ­g-1 after 100 cycles, while the NSLPC-800, NSLPC-900, and NSLPC-1000 anodes showed capacity retentions of 89.8%, 89.3%, and 82.3% at 0.05 A ­g-1, respectively. Meanwhile, the unique "defect in disorder" structure enabled the NSLPC-700 anode to achieve a high initial coulomb efficiency (ICE) of 48% (compared with 21% for NSLPC-800, 30% for NSLPC-900, and 25% for NSLPC-1000), which was superior to previously reported . . .

 



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