N-doped carbon nanotubes formed in a wide range of temperature and ramping rate for fast sodium storage

作     者：Ruchao Wei Man Huang Wenzhe Ma Baojuan Xi Zhenyu Feng Haibo Li Jinkui Feng Shenglin Xiong Ruchao Wei;Man Huang;Wenzhe Ma;Baojuan Xi;Zhenyu Feng;Haibo Li;Jinkui Feng;Shenglin Xiong

作者机构：Key Laboratory of Colloid and Interface ChemistryMinistry of EducationSchool of Chemistry and Chemical Engineeringand State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100ShandongChina Department of Science and Technology of Shandong ProvinceJinan 250100ShandongChina School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059ShandongChina Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education)Shandong UniversityJinan 250061ShandongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2020年第29卷第10期

页      面：136-146页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financial supports provided by the National Natural Science Foundation of China(21871164) the Taishan Scholar Project Foundation of Shandong Province(ts20190908) the Natural Science Foundation of Shandong Province(ZR2019MB024) Young Scholars Program of Shandong University(2017WLJH15) 

主　　题：Nitrogen-doped carbon nanotubes Ni nanoparticles Anode Sodium-ion batteries 

摘      要：Herein,nickel@nitrogen-doped carbon nanotubes(Ni@NCNTs)are prepared by a simple and reliable method with Ni-based complex as single-source ***,the formation of CNTs is not susceptible to the calcination temperature and ramping rate and Ni@NCNTs can be attained from 430 to 900℃in an inert *** they are the first time to be applied as the anode material for sodium-ion *** presence of Ni nanoparticles(NPs)facilitates the solid electrolyte interface film over the anode surface and improves the capacity retention of the host material,especially at the high ***,Na+diffusion is reinforced after the introduction of Ni ***@NCNTs obtained at 500℃(Ni@NCNTs-500)exhibit the best capacity retention and rate *** analyses demonstrate the faster electron transportation and ion diffusion than others prepared at other *** surficial capacitance storage favors the fast electrochemistry *** delivers a high specific capacity(192 mA h g^−1 at 0.5 A g^−1),excellent cycling stability(103 mA h g^−1 after 10,000 cycles at 10 A g^−1),and outstanding high-rate capability up to 20 A g^−1(118 mA h g^−1).The related full cells confirm a high energy density of 140 Wh kg^−1 at 38.16 W kg^−1 and 44.27 W h kg^−1 at 762 W kg^−1.