Many electrochemical energy storage devices,such as batteries,supercapacitors,and metal ion capacitors,rely on effective and inexpensive electrode materials.Herein,we have developed highly active nitrogen-doped porous carbon nanofoams(NPCNs-600-N)for sodium-ion capacitors(SICs).NPCNs-600-N have a highly porous framework,extended interlayer spacing(0.41 nm),and lots of surface functional groups.Accordingly,NPCNs-600-N achieves a high reversible capacity(301 mAh·g-1 at 0.05 A·g-1),superior rate capability(112 mAh·g-1 at 5.00 A·g-1),and ultra-stable cyclability.The excellent rate and cycling performance originate from the abundant active sites and porous architecture of NPCNs-600-N.Further-more,SICs device is constructed by employing the NPCNs-600-N as the battery-like anode and commercial superconductive carbon black as the capacitive cathode,which delivers high energy/power densities of 92 Wh·kg-1/15984 W·kg-1 with a remarkable cyclability(93％reten-tion over 5000 cycles at 1.00 A·g-1).The methodology of the work enables the simultaneous tuning of the porous architectures and surface function groups of carbon for high-performance SICs.

K.Ramachandran;Gokila Subburam;Xian-Hu Liu;Ming-Gang Huang;Chun Xu;Dickon H.L.Ng;Ying-Xue Cui;Guo-Chun Li;Jing-Xia Qiu;Chuan Wang;Jia-Biao Lian

Institute for Energy Research,Jiangsu University,Zhenjiang 212013,China;Key Laboratory of Materials Processing and Mold(Zhengzhou University),Ministry of Education,Zhengzhou University,Zhengzhou 450002,China;Key Laboratory of Fine Chemical Application Technology of Luzhou,Luzhou 646099,China;Department of Physics,The Chinese University of Hong Kong,Hong Kong 999077,China;Jiangsu National Synergetic Innovation Center for Advanced Materials,School of Chemistry and Molecular Engineering,Institute of Advanced Synthesis,Nanjing Technology University,Nanjing 211800,China

稀有金属（英文版）

[1]K.Ramachandran;Gokila Subburam;Xian-Hu Liu;Ming-Gang Huang;Chun Xu;Dickon H.L.Ng;Ying-Xue Cui;Guo-Chun Li;Jing-Xia Qiu;Chuan Wang;Jia-Biao Lian-.Nitrogen-doped porous carbon nanofoams with enhanced electrochemical kinetics for superior sodium-ion capacitor)[J].稀有金属（英文版）,2022(07):2481-2490

nanofoams,NPCNs

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