Thickness-control of ultrathin bimetallic Fe-Mo selenide@N-doped carbon core/shell "nano-crisps" for high-performance potassium-ion batteries

被引:73
作者
Chu, Jianhua [1 ]
Yu, Qiyao [1 ]
Yang, Dexin [2 ,3 ]
Xing, Lidong [1 ]
Lao, Cheng-Yen [3 ]
Wang, Min [1 ]
Han, Kun [1 ]
Liu, Zhiwei [1 ]
Zhang, Lin [4 ,5 ]
Du, Wenya [4 ,5 ]
Xi, Kai [3 ]
Bao, Yanping [1 ]
Wang, Wei [3 ,6 ]
机构
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
[2] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England
[4] Xi An Jiao Tong Univ, Key Lab, Sch Elect & Informat Engn, Elect Mat Res Lab,Minist Educ, Xian 710049, Shaanxi, Peoples R China
[5] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China
[6] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
Bimetallic Fe-Mo selenide; N-doped carbon; Conductivity; Expanded interlayer spacing; Nano-crisps; Potassium-ion batteries; REDUCED GRAPHENE OXIDE; NANOSHEETS; MOSE2; ELECTROCATALYST; NANOWIRES; BEHAVIOR; ANODES;
D O I
10.1016/j.apmt.2018.10.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The abundance and low cost of potassium precursor materials make potassium-ion batteries (KIBs) a future energy storage system. However, the main challenge is the lack of suitable materials to offer enough space to stably store large-sized K ions. We herein investigate an ultrathin crisps-like bimetallic Fe-Mo selenide@N-doped carbon core/shell nanostructure (FMSC) as a superior anode for KIBs. The few layered bimetallic selenide with high intrinsic conductivity and expanded interlayer spacing (ca. 0.74 nm) as a core can facilitate the transfer of both electrons and K ions. The ultrathin flexible N-doped carbon shell can further increase the electron mobility, simultaneously buffer the volume variation, confine the FeMoSe4 from pulverization during cycling, and maintain the integrity of the electrode and the structural stability. By tuning the thickness of the FMSC "nano-crisps", excellent electrochemical performance has been achieved, for instance a high reversible capacity of 298 mAh g(-1) is achieved at 200 mA g(-1) over 100 cycles. When cycled at a very high current density of 1000 mA g(-1), the capacity can still achieve 178 mAh g(-1) over 400 cycles, which is among the best KIBs anodes ever reported. This work may open up an effective way to synthesize bimetallic chalcogenides as promising anodes for high-performance KIBs. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:344 / 351
页数:8
相关论文
共 59 条
[1]   A Novel Wet Chemistry Approach for the Synthesis of Hybrid 2D Free-Floating Single or Multilayer Nanosheets of MS2@oleylamine (M=Mo, W) [J].
Altavilla, Claudia ;
Sarno, Maria ;
Ciambelli, Paolo .
CHEMISTRY OF MATERIALS, 2011, 23 (17) :3879-3885
[2]   A titanium-based metal-organic framework as an ultralong cycle-life anode for PIBs [J].
An, Yongling ;
Fei, Huifang ;
Zhang, Zhen ;
Ci, Lijie ;
Xiong, Shenglin ;
Feng, Jinkui .
CHEMICAL COMMUNICATIONS, 2017, 53 (59) :8360-8363
[3]   High-performance lithium battery anodes using silicon nanowires [J].
Chan, Candace K. ;
Peng, Hailin ;
Liu, Gao ;
McIlwrath, Kevin ;
Zhang, Xiao Feng ;
Huggins, Robert A. ;
Cui, Yi .
NATURE NANOTECHNOLOGY, 2008, 3 (01) :31-35
[4]   Structural water engaged disordered vanadium oxide nanosheets for high capacity aqueous potassium-ion storage [J].
Charles, Daniel Scott ;
Feygenson, Mikhail ;
Page, Katharine ;
Neuefeind, Joerg ;
Xu, Wenqian ;
Teng, Xiaowei .
NATURE COMMUNICATIONS, 2017, 8
[5]   Ultrathin WS2 Nanoflakes as a High-Performance Electrocatalyst for the Hydrogen Evolution Reaction [J].
Cheng, Liang ;
Huang, Wenjing ;
Gong, Qiufang ;
Liu, Changhai ;
Liu, Zhuang ;
Li, Yanguang ;
Dai, Hongjie .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (30) :7860-7863
[6]   Graphitic Carbon-Coated FeSe2 Hollow Nanosphere-Decorated Reduced Graphene Oxide Hybrid Nanofibers as an Efficient Anode Material for Sodium Ion Batteries [J].
Cho, Jung Sang ;
Lee, Jung-Kul ;
Kang, Yun Chan .
SCIENTIFIC REPORTS, 2016, 6
[7]   Opportunities and challenges for a sustainable energy future [J].
Chu, Steven ;
Majumdar, Arun .
NATURE, 2012, 488 (7411) :294-303
[8]   A general method for the large-scale synthesis of uniform ultrathin metal sulphide nanocrystals [J].
Du, Yaping ;
Yin, Zongyou ;
Zhu, Jixin ;
Huang, Xiao ;
Wu, Xue-Jun ;
Zeng, Zhiyuan ;
Yan, Qingyu ;
Zhang, Hua .
NATURE COMMUNICATIONS, 2012, 3
[9]   NiSe2/FeSe2 nanodendrites: a highly efficient electrocatalyst for oxygen evolution reaction [J].
Du, Yeshuang ;
Cheng, Gongzhen ;
Luo, Wei .
CATALYSIS SCIENCE & TECHNOLOGY, 2017, 7 (20) :4604-4608
[10]   Potassium Secondary Batteries [J].
Eftekhari, Ali ;
Jian, Zelang ;
Ji, Xiulei .
ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (05) :4404-4419