Interconnected N/P co-doped carbon nanocage as high capacitance electrode material for energy storage devices
作者机构：School of Chemistry and Chemical EngineeringAnhui Key Laboratory of Coal Clean Conversion and High Valued UtilizationKey Lab of Metallurgical Emission Reduction and Resources RecyclingMinistry of EducationAnhui University of TechnologyMaanshan 243002China School of Material Science and EngineeringUniversity of JinanJinan 250022China College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第5期
页 面：4068-4075页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：The authors thank the financial supports from the National Natural Science Foundation of China(Nos.51872005,52072002,and U1710116) the WanJiang Scholar Program
主 题：pyrene carbon nanocage N/P co-doped supercapacitor zinc-ion hybrid supercapacitor
摘 要：Heteroatom doping carbon materials exhibit a huge application potential for energy storage devices(ESDs).Herein,interconnected N/P co-doped carbon nanocage(NP-CNC)was synthesized from pyrene molecules by using nano-MgO as template and melamine-phytic acid supramolecular aggregate as dopant coupled with KOH *** as-prepared NP-CNC possesses interconnected nanocages for electron transportation and abundant micropores for ion ***,co-doped N/P species in NP-CNC provide active sites and additional ***,NP-CNC as electrode material for symmetric supercapacitor exhibits a high gravimetric capacitance of 435 F·g^(-1) at 0.05 A·g^(-1),high volumetric capacitance of 274 F·cm^(-3) at 0.032 A·cm^(-3),and long cycle lifespan with 96.1%capacitance retention after 50,000 ***,NP-CNC as cathode for zinc-ion hybrid supercapacitor delivers satisfactory energy and power densities of 130.6 Wh·kg^(-1)(82.3 Wh·L^(-1))and 14.4 kW·kg^(-1)(9.1 kWL^(-1)).This work paves a promising approach to the preparation of high capacitance NP-CNC for ESDs.
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