Nitrogen-doped hierarchically porous carbon architectures coupled with Fe/Fe5C2 nanoparticles as anode materials for alkaline-metal-ion batteries
作者:Liu, SH (Liu, Shenghong)[ 1 ] ; Chen, L (Chen, Lei)[ 1 ] ; Huang, CM (Huang, Chunmao)[ 1 ] ; Zhu, JZ (Zhu, Jianzhong)[ 1 ] ; Wang, Y (Wang, Yang)[ 1 ] ; Feng, JJ (Feng, Jingjie)[ 1 ] ; Fan, QH (Fan, Qinghua)[ 1 ] ; Dong, YZ (Dong, Youzhong)[ 1 ] ; Kuang, Q (Kuang, Quan)[ 1 ] ; Zhao, YM (Zhao, Yanming)[ 1,2 ]
ELECTROCHIMICA ACTA
卷: 336
文献号: 135733
DOI: 10.1016/j.electacta.2020.135733
出版年: MAR 10 2020
文献类型:Article; Proceedings Paper
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会议名称
会议: 6th International Conference on Ionic Liquids for Electrochemical Devices (ILED)
会议地点: Rome, ITALY
会议日期: SEP 09-11, 2018
会议赞助商:Sapienza Univ Rome, HYDRO-ECO; Int Soc Electrochemistry; Italian Chem Soc, Electrochemistry Div; Solvionic; Iwata & Co Ltd; Kanto Chem Co Inc; EUROGLASS S r l; Italian Chem Soc, EnerCHEM Grp
摘要
Synthesis of high capacity anode materials for lithium-/potassium-ion batteries (LIBs/PIBs) is still a big challenge. Here we report a highly active electrode material, which is synthesized by heat treatment of mixtures of iron(III)hexacyanoferrate (HCF), dicyanamide (DCA) and SiO2 spheres and then etching engineering. The samples possess three-dimensional (3D) interconnecting carbon architectures coupled with Fe/Fe5C2 and large specific surface area. The highlights can be attributed to three points: (i) as far as we know, the study on Fe/Fe(5)C(2 )in carbon hybrids as anodes for LIBs and/or PlBs has not been reported yet, (ii) the strategy using DCA/HCF can increase the amount of N-C/Fe active sites, and can promote the formation of Fe/Fe5C2 and abundant Fe-N-x and (iii) the results manifest that Fe/Fe5C2 NPs and Fe-N-x-C might also serve as efficient catalysts to activate/promote the formation of the stronger and stabler SEI film on the electrode surfaces in the first cycle. Therefore, 3DM Fe/Fe5C2@NC presents the outstanding lithium/potassium storage properties. As for LIBs, 3DM Fe/Fe5C2@NC exhibits an initial discharge capacity of 1513 mAh g(-1) at 0.1 A g(-1). At 1 A g(-1), it presents the high reversible capacity of 1024 mAh g(-1) after 550 cycles and the reversible capacity sustains 839 mAh g(-1) (81.9% retention of the maximum capacity) after a long span of 1000 cycles. As for PIBs, 3DM Fe/Fe5C2@NC exhibits high reversible capacity of 460 mAh g(-1) at 0.05 A g(-1) and high cycling stability of 205 mAh g(-1) at 0.5 A g(-1) after 1000 cycles with an extremely slow capacity decay of only 0.013% per cycle from the 10th to 1000th cycle. Finally, the strategy to fabricate 3DM Fe/Fe5C2@NC nanocrystal can synthesize other nanocomposites with metallic nanoparticles and abundant active sites as anodes electrodes toward high-performance LIBs/PIBs in future. (C) 2020 Elsevier Ltd. All rights reserved.
关键词
作者关键词:Fe-based materials; Anodes; Nitrogen doping; Carbon hybrids; Alkaline-metal-ion batteries
KeyWords Plus:OXYGEN REDUCTION REACTION; LITHIUM STORAGE; GRAPHENE; CATALYST; MXENE
作者信息
通讯作者地址: Zhao, YM (通讯作者)
显示更多South China Univ Technol, Sch Phys, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Sch Phys, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
[ 2 ] South China Inst Collaborat Innovat, Dongguan 523808, Peoples R China
电子邮件地址:zhaoym@scut.edu.cn
基金资助致谢
基金资助机构授权号
Science and Technology Bureau of Guangdong Government
2017B030308005
Guangdong Science and Technology Program Key Projects
2019B090908002
NSFC Committee of China
51672086
Science and Technology Bureau from Dongguan Government
2019622163008
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出版商
PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Electrochemistry
Web of Science 类别:Electrochemistry