Soft carbon-coated FeNCN anodes for enhanced potassium ion storage
Abstract
A novel iron carbodiimide composite with soft carbon coating was synthesized as a high-performance anode for PIBs. An optimized soft carbon coating enhances electronic conductivity and mitigates structural stress, delivering a high initial capacity (500.3 mAh g−1) and exceptional cycling stability (267.6 mAh g−1 after 590 cycles).