Nanostructured WSe2/C composites as anode materials for sodium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12726-12729 ◽  
Author(s):  
Zhian Zhang ◽  
Xing Yang ◽  
Yun Fu

75.57% crystal WSe2 nanoparticles are uniformly dispersed on a carbon matrix to form WSe2/C nanomaterials using a solid-state reaction. The WSe2/C nanomaterials in sodium-ion batteries exhibit high discharge capacity and excellent cycling stability.

2018 ◽  
Vol 6 (41) ◽  
pp. 20056-20068 ◽  
Author(s):  
Ganesh Kumar Veerasubramani ◽  
Yuvaraj Subramanian ◽  
Myung-Soo Park ◽  
Goli Nagaraju ◽  
Baskar Senthilkumar ◽  
...  

The yolk–shell structured Fe1−xS encapsulated by N-doped carbon exhibited high discharge capacity, good cycling stability and excellent rate capability.


2015 ◽  
Vol 3 (33) ◽  
pp. 17224-17229 ◽  
Author(s):  
Yubin Niu ◽  
Maowen Xu ◽  
Chuanjun Cheng ◽  
ShuJuan Bao ◽  
Junke Hou ◽  
...  

Na3.12Fe2.44(P2O7)2/multi-walled carbon nanotube (MWCNT) composite was fabricated by a solid state reaction and was further used to fabricate a cathode for sodium-ion batteries.


RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30628-30636 ◽  
Author(s):  
Mingxue Wang ◽  
Xiaobing Huang ◽  
Haiyan Wang ◽  
Tao Zhou ◽  
Huasheng Xie ◽  
...  

Na3V2(PO4)2F3/C composites were synthesized by a solid-state reaction method using pitch as the carbon source, the as-prepared sample with the carbon content of 12.14% possesses an excellent rate performance and cycle stability.


2014 ◽  
Vol 3 (7) ◽  
pp. A69-A71 ◽  
Author(s):  
D. Nguyen ◽  
J. Gim ◽  
V. Mathew ◽  
J. Song ◽  
S. Kim ◽  
...  

RSC Advances ◽  
2018 ◽  
Vol 8 (42) ◽  
pp. 23847-23853 ◽  
Author(s):  
Seung-Ho Yu ◽  
Aihua Jin ◽  
Xin Huang ◽  
Yao Yang ◽  
Rong Huang ◽  
...  

SnS/C nanocomposites were simply prepared as anode materials for sodium-ion batteries. They showed excellent cycling stability at various current densities with more than 90% of its capacity delivered when the current increased from 50 to 500 mA g−1.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Min Wan ◽  
Rui Zeng ◽  
Jingtao Meng ◽  
Zexiao Cheng ◽  
Weilun Chen ◽  
...  

AbstractIron hexacyanoferrate (FeHCF) is a promising cathode material for sodium-ion batteries. However, FeHCF always suffers from a poor cycling stability, which is closely related to the abundant vacancy defects in its framework. Herein, post-synthetic and in-situ vacancy repairing strategies are proposed for the synthesis of high-quality FeHCF in a highly concentrated Na4Fe(CN)6 solution. Both the post-synthetic and in-situ vacancy repaired FeHCF products (FeHCF-P and FeHCF-I) show the significant decrease in the number of vacancy defects and the reinforced structure, which can suppress the side reactions and activate the capacity from low-spin Fe in FeHCF. In particular, FeHCF-P delivers a reversible discharge capacity of 131 mAh g−1 at 1 C and remains 109 mAh g−1 after 500 cycles, with a capacity retention of 83%. FeHCF-I can deliver a high discharge capacity of 158.5 mAh g−1 at 1 C. Even at 10 C, the FeHCF-I electrode still maintains a discharge specific capacity of 103 mAh g−1 and retains 75% after 800 cycles. This work provides a new vacancy repairing strategy for the solution synthesis of high-quality FeHCF.


Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17860-17868 ◽  
Author(s):  
Yu-Lin Bai ◽  
Raxidin Xarapatgvl ◽  
Xue-Yan Wu ◽  
Xin Liu ◽  
Yu-Si Liu ◽  
...  

TiO2−x@NC with plenty of oxygen vacancies and surface nitrogen-doped carbon coating has been prepared and exhibits excellent cycling stability and superior rate capabilities as an anode material for SIBs.


2011 ◽  
Vol 287-290 ◽  
pp. 1314-1321 ◽  
Author(s):  
Ning Li ◽  
Bo Rong Wu ◽  
Cun Zhong Zhang ◽  
Chun Wei Yang ◽  
Feng Wu

The Mn-Cl co-doped LiFePO4 was succefully synthetized by two-step solid-state reaction. After doping, the Lattice constants shifted while the morphology changed only little, revealing that the properties may not be improved by the slight changed grain size but the crystal structure. The co-doped sample presented a high discharge capacity of 161.1mAhg−1 at 0.1C, 157.7mAhg−1 at 0.5C, 149.1mAhg−1 at 1C, nearly 30mAhg−1 higher than that of the pristine LiFePO4/C respectively. The electrochemical reversibility and cycle stability of co-doped LiFePO4/C were enhanced. Moreover, the Li+ diffusion and exchange current density of that was increased after doped with Mn2+ and Cl- .


2016 ◽  
Vol 4 (12) ◽  
pp. 4375-4379 ◽  
Author(s):  
Xin Xu ◽  
Demei Yu ◽  
Han Zhou ◽  
Lusi Zhang ◽  
Chunhui Xiao ◽  
...  

A unique hybrid nanostructure of MoS2@ACNTs is designed and fabricated as an anode material for sodium-ion batteries. With advantages of its unique constituents and architecture, the MoS2@ACNT electrode is capable of exhibiting a high discharge capacity of 461 mA h g−1even over 150 cycles at a current density of 500 mA g−1.


2017 ◽  
Vol 5 (32) ◽  
pp. 16616-16621 ◽  
Author(s):  
Md Mokhlesur Rahman ◽  
Irin Sultana ◽  
Srikanth Mateti ◽  
Junnan Liu ◽  
Neeraj Sharma ◽  
...  

A maricite hybrid cathode of NaFePO4/C/graphene with a novel microstructure is produced by a modified ball-milling process based on a solid-state reaction. This structure is capable of delivering high sodium storage capacity with outstanding cycle stability.


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