文献类型：期刊文献

英文题名：A homologous N/P-codoped carbon strategy to streamline nanostructured MnO/C and carbon toward boosted lithium-ion capacitors

作者：Lei, Da[1,2];Hou, Zhidong[1,2];Li, Na[1,2];Cao, Yunjing[1,2];Ren, Lingbo[1,2];Liu, Huanyan[1,2];Zhang, Yu[3];Wang, Jian-Gan[1,2]

机构：[1]Northwestern Polytech Univ, Ctr Nano Energy Mat, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, 127, Youyi West Rd, Xian 710072, Peoples R China;[2]Shaanxi Joint Lab Graphene NPU, 127, Youyi West Rd, Xian 710072, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：201

起止页码：260

外文期刊名：CARBON

收录：;EI(收录号：20223912793738);WOS:【SCI-EXPANDED(收录号:WOS:000860498500002)】；

基金：The work is supported by the National Natural Science Foundation of China (52272239, 22109044, and 51821091) , Fundamental Research Funds for the Central Universities (D5000210894 and 3102019JC005) . The authors also appreciate the TEM analysis from the Analytical & Testing Center of Northwestern Polytechnical University.

语种：英文

外文关键词：N/P-codoped carbon; Lithium-ion capacitor; MnO/C; Carbon nanotube

摘要：Lithium-ion capacitors (LICs) are drawing increasingly attention owing to their attractive virtues of high energy/power density and long lifetime. However, overcoming the kinetic mismatch of battery-type anodes and capacitor-type cathodes remains an intractable challenge. In this work, we report a homologous N/P-codoped carbon (NPC) strategy to boost lithium-ion capacitors based on nanostructured MnO/C anodes and carbon cathodes. A controllable phytic acid-assisted polymerization method based on the MnO2 precursors is developed to streamline the fabrication of MnO/NPC core-shell nanowires and NPC nanotubes (NPCT). The NPC is of profound benefit for regulating the surface functionality, porosity, and electron transfer kinetics, which greatly minimizes the kinetic mismatch. The battery-type MnO/NPC anode retains a large capacity of 314 mAh g(-1) at a high-rate of 5 A g(-1), while the capacitor-type NPCT cathode delivers a 110 mAh g(-1) at 0.1 A g(-1). The as-built LICs exhibit a high energy density of 145 Wh kg(-1), a high power density of 10 kW kg(-1), and good cycling lifespan. The present study will enlighten the significance of N/P dual-doping in designing high-performance LICs.