@article{Pan2024, 
author = {Zhen Pan and Ke Li and Lidong Sun and Yang Li and Zuodong Zhang and Yitai Qian and Wei Chen},
title = {A High-Concentration Edge-Nitrogen-Doped Porous Carbon Anode via Template Free Strategy for High-Performance Potassium-Ion Hybrid Capacitors},
year = {2024},
journal = {Energy Material Advances},
volume = {5},
pages = {0080},
url = {https://www.sciopen.com/article/10.34133/energymatadv.0080},
doi = {10.34133/energymatadv.0080},
abstract = {Developing facile and economical strategies to fabricate nitrogen-doped porous carbon anode is desirable for dual-carbon potassium ion hybrid capacitors (PIHCs). Here, a high-concentration edge-nitrogen-doped porous carbon (NPC) anode is synthesized by a template-free strategy, in which the total content of pyrrolic nitrogen and pyridinic nitrogen accounts for more than 80% of the nitrogen atoms. As a result, the NPC anode displays a capacity of 315.4 mA h g−1 at a current rate of 0.1 A g−1 and 189.1 mA h g−1 at 5 A g−1. Ex situ characterizations and density functional theory calculations demonstrate the high-concentration edge-nitrogen doping enhances K+ adsorption and electronic conductivity of carbon materials, resulting in good electrochemical performance. The assembled NPC//CMK-3 PIHC delivers an energy density of 71.1 W h kg−1 at a power density of 771.9 W kg−1 over 8,000 cycles.}
}