文献类型：期刊文献

英文题名：3D frame-like architecture of N-C-incorporated mixed metal phosphide boosting ultrahigh energy density pouch-type supercapacitors

作者：Xu, Le[1,2];Xi, Yukun[3,4];Li, Wenbin[3,4];Hua, Zile[2];Peng, Jianhong[3,4];Hu, Junhua[5];Zhou, Jiao-Jiao[1];Zhang, Peilin[1];Wang, Jingjing[3,4];Wang, Weiwei[1];Ding, Hualong[1];Wang, Wanqing[1];Ji, Wuxing[1];Yang, Yang[1];Xu, Xicheng[1];Chen, Luyang[1];Li, Xifei[3,4]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, State Key Lab High Performance Ceram & Superfines, Shanghai Inst Ceram, Shanghai 200050, Peoples R China;[3]Xian Univ Technol, Xian Key Lab New Energy Mat & Devices, Inst Adv Electrochem Energy, Xian 710048, Shanxi, Peoples R China;[4]Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shanxi, Peoples R China;[5]Zhengzhou Univ, Ctr Int Cooperat Designer Low Carbon & Environm M, Zhengzhou 450001, Henan, Peoples R China

年份：2022

卷号：91

外文期刊名：NANO ENERGY

收录：;EI(收录号：20214511116605);WOS:【SCI-EXPANDED(收录号:WOS:000717661900001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 51502092 and 52072298), Natural Science Foundation of Qinghai Province of China (2020-ZJ-910), the Fundamental Research Funds for the Central Universities (222201718002, JKD01211601), the Thousand Talents Program Young Project in China, the Program for Eastern Scholar at Shanghai Institutions of Higher Learning (TP2015028), Natural Science Foundation of Shaanxi (2020JC-41). We are thankful to J. Tang at the Research Center of Analysis and Test of East China University of Science and Technology for kind help on TEM.

语种：英文

外文关键词：3D hollow frame; Co2-xNixP-N-C-2; MOFs; DFT; High energy density; Hybrid supercapacitors

摘要：The multi-compositional adjustment and distinctively architectural control have been challenging to modulate the electrochemical performance of favorable supercapacitor electrodes. Herein, three-dimensional hollow open frame-like architectures nickel cobalt phosphate with nitrogen doped carbon (Co2-xNixP-N-C-2) converted from a metal-organic framework precursor is utilized as the functional electrode for supercapacitor, which delivers remarkable electrochemical performance in terms of exceptional capacitance reaching similar to 1374.7 C g(-1) (specific capacitance of similar to 3054.9 F g(-1)) and ultra-long cycling longevity (a retention of similar to 91.7% after 10,000 cycles at 5 A g(-1)). Furthermore, the assembled hybrid supercapacitor (HSC) device displays ultrahigh energy density of similar to 86 Wh kg(-1) at a maximum power density of similar to 800 W kg(-1). The superior performance can be attributed to: (I) 3D hollow open nanostructures provide sufficient electroactive sites and ion-diffusion "short-cuts"; (II) The introduction of phosphorus can adjust the band structure and gain a small band gap; (III) Bimetals enhance rich redox reactions; (IV) Nitrogen doped carbon ensures high conductivity and charge storage kinetics.