Alkali-induced crumpling of Ti3C2Tx(MXene) to form 3D porous networks for sodium ion storage

2018 ◽  
Vol 54 (36) ◽  
pp. 4533-4536 ◽  
Author(s):  
Di Zhao ◽  
Mallory Clites ◽  
Guobing Ying ◽  
Sankalp Kota ◽  
Jie Wang ◽  
...  

A novel strategy for producing three-dimensional (3D) porous Ti3C2Tx(MXene) networks by alkali-induced crumpling of Ti3C2Txnanosheets is presented. These networks display high capacity and good rate performance as anode materials for sodium-ion batteries.

2018 ◽  
Vol 54 (34) ◽  
pp. 4317-4320 ◽  
Author(s):  
Dequn Zheng ◽  
Jun Zhang ◽  
Wei Lv ◽  
Tengfei Cao ◽  
Siwei Zhang ◽  
...  

Sulfur-functionalized graphene monoliths with a three-dimensional porous framework as anodes show a high capacity and ultrafast sodium ion storage performance.


Nanoscale ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 3208-3215 ◽  
Author(s):  
Pei Wang ◽  
Miao Liu ◽  
Fangjie Mo ◽  
Ziyao Long ◽  
Fang Fang ◽  
...  

Developing sodium ion battery (SIB) anode materials of a low-cost and high-capacity nature for future large-scale applications still involves challenges.


Author(s):  
Xu Xie ◽  
Zhoulan Yin ◽  
You Li ◽  
Ruixuan Tu ◽  
Yang Liu ◽  
...  

Metal-selenides are one of the next generation anode materials for sodium ion batteries (SIBs), but suffer from sluggish charge/ion transport, huge volume expansion and aggregation of particles. Herein, ZnSe/C composites...


Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1770
Author(s):  
Yaowu Chen ◽  
Zhu Guo ◽  
Bangquan Jian ◽  
Cheng Zheng ◽  
Haiyan Zhang

Sodium-ion storage devices have received widespread attention because of their abundant sodium resources, low cost and high energy density, which verges on lithium-ion storage devices. Electrochemical redox reactions of metal oxides offer a new approach to construct high-capacity anodes for sodium-ion storage devices. However, the poor rate performance, low Coulombic efficiency, and undesirable cycle stability of the redox conversion anodes remain a huge challenge for the practical application of sodium ion energy storage devices due to sluggish kinetics and irreversible structural change of most conversion anodes during cycling. Herein, a nitrogen-doping graphene/Fe2O3 (N-GF-300) composite material was successfully prepared as a sodium-ion storage anode for sodium ion batteries and sodium ion supercapacitors through a water bath and an annealing process, where Fe2O3 nanoparticles with a homogenous size of about 30 nm were uniformly anchored on the graphene nanosheets. The nitrogen-doping graphene structure enhanced the connection between Fe2O3 nanoparticles with graphene nanosheets to improve electrical conductivity and buffer the volume change of the material for high capacity and stable cycle performance. The N-GF-300 anode material delivered a high reversible discharge capacity of 638 mAh g−1 at a current density of 0.1 A g−1 and retained 428.3 mAh g−1 at 0.5 A g−1 after 100 cycles, indicating a strong cyclability of the SIBs. The asymmetrical N-GF-300//graphene SIC exhibited a high energy density and power density with 58 Wh kg−1 at 1365 W kg−1 in organic solution. The experimental results from this work clearly illustrate that the nitrogen-doping graphene/Fe2O3 composite material N-GF-300 is a potential feasibility for sodium-ion storage devices, which further reveals that the nitrogen doping approach is an effective technique for modifying carbon matrix composites for high reaction kinetics during cycles in sodium-ion storage devices and even other electrochemical storage devices.


2020 ◽  
Vol 8 (43) ◽  
pp. 22593-22600
Author(s):  
Lisan Cui ◽  
Chunlei Tan ◽  
Guanhua Yang ◽  
Yu Li ◽  
Qichang Pan ◽  
...  

Bimetallic sulfide SnS/MoS2 heterostructures decorating N, S co-doped carbon nanosheets have been synthesized, and evaluated as high performance anode materials for SIBs.


2018 ◽  
Vol 9 (6) ◽  
pp. 1803260 ◽  
Author(s):  
Xuhui Yao ◽  
Yajie Ke ◽  
Wenhao Ren ◽  
Xuanpeng Wang ◽  
Fangyu Xiong ◽  
...  

2018 ◽  
Vol 10 (17) ◽  
pp. 14716-14726 ◽  
Author(s):  
Peng Ge ◽  
Hongshuai Hou ◽  
Sijie Li ◽  
Lanping Huang ◽  
Xiaobo Ji

2019 ◽  
Vol 7 (19) ◽  
pp. 11771-11781 ◽  
Author(s):  
Chengzhi Zhang ◽  
Fei Han ◽  
Jianmin Ma ◽  
Zheng Li ◽  
Fuquan Zhang ◽  
...  

Heterostructure anode material have been developed by engineering internal electric field to boost charge carrier transport for high-rate and high-capacity sodium ion storage.


2016 ◽  
Vol 4 (40) ◽  
pp. 15471-15477 ◽  
Author(s):  
Young Jun Hong ◽  
Jung Hyun Kim ◽  
Yun Chan Kang

Hierarchically structured (Co1/3Fe2/3)Se2nanofibers with fiber-in-tube nanostructures were prepared by an electrospinning process and subsequent selenization. The synergetic effects of the hierarchical structures and ultrafine nanorods with high electrical conductivity resulted in superior rate performance of the hierarchically structured (Co1/3Fe2/3)Se2nanofibers.


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