Ultrathin Titanate Nanosheets/Graphene Films Derived from Confined Transformation for Excellent Na/K Ion Storage

被引:201
作者
Zeng, Cheng [1 ]
Xie, Fangxi [2 ]
Yang, Xianfeng [4 ]
Jaroniec, Mietek [5 ]
Zhang, Lei [1 ]
Qiao, Shi-Zhang [2 ,3 ]
机构
[1] South China Univ Technol, Sch Chem & Chem Engn, Minist Educ, Key Lab Heat Transfer Enhancement & Energy Conser, Guangzhou 510640, Guangdong, Peoples R China
[2] Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
[3] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[4] South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510640, Guangdong, Peoples R China
[5] Kent State Univ, Dept Chem & Biochem, Kent, OH 44242 USA
基金
澳大利亚研究理事会;
关键词
anode materials; sandwich structures; sodium titanate; sodium-ion batteries; ultrathin nanosheets; HIGH-PERFORMANCE; GRAPHENE OXIDE; 2-DIMENSIONAL NANOMATERIALS; SODIUM STORAGE; ANODE MATERIAL; BATTERIES; ELECTRODES; EVOLUTION; VERSATILE; NA2TI3O7;
D O I
10.1002/anie.201803511
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Confined transformation of assembled two-dimensional MXene (titanium carbide) and reduced graphene oxide (rGO) nanosheets was employed to prepare the free-standing films of the integrated ultrathin sodium titanate (NTO)/potassium titanate (KTO) nanosheets sandwiched between graphene layers. The ultrathin Ti-based nanosheets reduce the diffusion distance while rGO layers enhance conductivity. Incorporation of graphene into the titanate films produced efficient binder-free anodes for ion storage. The resulting flexible NTO/rGO and KTO/rGO electrodes exhibited excellent rate performances and long cycling stability characterized by reversible capacities of 72mAhg(-1) at 5Ag(-1) after 10000 cycles and 75mAhg(-1) after 700 cycles at 2Ag(-1) for sodium and potassium ion batteries, respectively. These results demonstrate the superiority of the unique sandwich-type electrodes.
引用
收藏
页码:8540 / 8544
页数:5
相关论文
共 39 条
[1]   2D metal carbides and nitrides (MXenes) for energy storage [J].
Anasori, Babak ;
Lukatskaya, Maria R. ;
Gogotsi, Yury .
NATURE REVIEWS MATERIALS, 2017, 2 (02)
[2]  
[Anonymous], ANGEW CHEM
[3]   Print flexible solar cells [J].
Cheng, Yi-Bing ;
Pascoe, Alex ;
Huang, Fuzhi ;
Peng, Yong .
NATURE, 2016, 539 (7630) :488-489
[4]   Graphene Oxide, Highly Reduced Graphene Oxide, and Graphene: Versatile Building Blocks for Carbon-Based Materials [J].
Compton, Owen C. ;
Nguyen, SonBinh T. .
SMALL, 2010, 6 (06) :711-723
[5]   Flexible Sodium-Ion Pseudocapacitors Based on 3D Na2Ti3O7 Nanosheet Arrays/Carbon Textiles Anodes [J].
Dong, Shengyang ;
Shen, Laifa ;
Li, Hongsen ;
Pang, Gang ;
Dou, Hui ;
Zhang, Xiaogang .
ADVANCED FUNCTIONAL MATERIALS, 2016, 26 (21) :3703-3710
[6]   Ti3C2 MXene-Derived Sodium/Potassium Titanate Nanoribbons for High-Performance Sodium/Potassium Ion Batteries with Enhanced Capacities [J].
Dong, Yanfeng ;
Wu, Zhong-Shuai ;
Zheng, Shuanghao ;
Wang, Xiaohui ;
Qin, Jieqiong ;
Wang, Sen ;
Shi, Xiaoyu ;
Bao, Xinhe .
ACS NANO, 2017, 11 (05) :4792-4800
[7]   Porous C3N4 Nanolayers@N-Graphene Films as Catalyst Electrodes for Highly Efficient Hydrogen Evolution [J].
Duan, Jingjing ;
Chen, Sheng ;
Jaroniec, Mietek ;
Qiao, Shi Zhang .
ACS NANO, 2015, 9 (01) :931-940
[8]   Laser Scribing of High-Performance and Flexible Graphene-Based Electrochemical Capacitors [J].
El-Kady, Maher F. ;
Strong, Veronica ;
Dubin, Sergey ;
Kaner, Richard B. .
SCIENCE, 2012, 335 (6074) :1326-1330
[9]   Hydrogenation Driven Conductive Na2Ti3O7 Nanoarrays as Robust Binder-Free Anodes for Sodium-Ion Batteries [J].
Fu, Shidong ;
Ni, Jiangfeng ;
Xu, Yong ;
Zhang, Qiao ;
Li, Liang .
NANO LETTERS, 2016, 16 (07) :4544-4551
[10]   Liquid-Phase Exfoliated Metallic Antimony Nanosheets toward High Volumetric Sodium Storage [J].
Gu, Jianan ;
Du, Zhiguo ;
Zhang, Chao ;
Ma, Jingui ;
Li, Bin ;
Yang, Shubin .
ADVANCED ENERGY MATERIALS, 2017, 7 (17)