Synergistic Effects of Phosphorus and Boron Co-Incorporated Activated Carbon for Ultrafast Zinc-Ion Hybrid Supercapacitors

• DOI: 10.1021/acsami.0c10512
• Publication Date: 2020-08-24T10:06:10Z
• Authors: Young-Geun Lee; Geon-Hyoung An
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

The rapid expansion of the development electrochemical capacitor appliance and its industry areas has created need for long cycling stability over 30 000 cycles along with an ultrafast performance (referred to as longevity). In recent years, zinc-ion hybrid supercapacitors (ZICs) are considered be emerging energy storage applications thanks their high specific capacity remarkable stability. However, ZICs still face serious challenges in overcoming lifetime limitations related cathode materials, activated carbon (AC), due inadequate electrical properties poor wettability between electrolyte electrode, which cause reductions rapidly at current densities during cycling. To address these drawbacks, a novel phosphorus (P) boron (B) codoped AC (designated P&B-AC) is presented herein enhanced B-doping improved P-doping provide longevity ZICs. prepared display superior excellent 169.4 mAh g-1 0.5 A g-1, 84.0 10 outstanding indicated by 88% retention up g-1. ability firmly ascribed P B codoping synergistic effect, leading diffusion capability Zn ion charge-transfer process cathode.