Carbon capsule confined Sb2Se3 for fast Na+ extraction in sodium-ion batteries

2020 ◽  
Vol 4 (2) ◽  
pp. 797-808
Author(s):  
Ling Guo ◽  
Liyun Cao ◽  
Jianfeng Huang ◽  
Jiayin Li ◽  
Shaoyi Chen

Uniform carbon capsules can suppress volume change of Sb2Se3 and uniformly release stress, resulting in a stable electrode structure with fast Na+ extraction.

Nanoscale ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 248-255 ◽  
Author(s):  
Liqin Wang ◽  
Quanqing Zhao ◽  
Zhitao Wang ◽  
Yujun Wu ◽  
Xilan Ma ◽  
...  

The stable 3D integral electrode structure and the heteroatom-doping effect of Sn0.9Co0.1S2/CC nanosheets lead to outstanding electrochemical properties for sodium ion batteries.


Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2336
Author(s):  
Li Zeng ◽  
Liping Zhang ◽  
Xingang Liu ◽  
Chuhong Zhang

Tin disulfide (SnS2) is regarded as one of the most suitable candidates as the electrode material for sodium-ion batteries (SIBs). However, the easy restacking and volume expansion properties of SnS2 during the charge/discharge process lead to the destruction of the electrode structure and a decrease in capacity. We successfully synthesized a SnS2 nanocrystalline-anchored three-dimensional porous graphene composite (SnS2/3DG) by combining hydrothermal and high-temperature reduction methods. The SnS2 nanocrystalline was uniformly dispersed within the connected reduced graphene oxide matrix. The SnS2/3DG battery showed a high reversible capacity of 430 mAh/g after 50 cycles at 100 mA/g. The SnS2/3DG composite showed an excellent rate capability with the current density increasing from 100 mA/g to 2 A/g. The excellent performance of the novel SnS2/3DG composite is attributed to the porous structure, which not only promoted the infiltration of electrolytes and hindered volume expansion for the porous structure, but also improved the conductivity of the whole electrode, demonstrating that the SnS2/3DG composite is a prospective anode for the next generation of sodium-ion batteries.


Author(s):  
Lin Chen ◽  
Xiaojie He ◽  
Huimin Chen ◽  
Shuping Huang ◽  
Mingdeng Wei

Bismuth (Bi), as an alloy-based material, has been demonstrated as a promising anode for sodium-ion batteries (SIBs) due to its high theoretical capacity. However, the large volume change of Bi...


2018 ◽  
Vol 6 (27) ◽  
pp. 13153-13163 ◽  
Author(s):  
Hui Xu ◽  
Liguang Qin ◽  
Jian Chen ◽  
Zuankai Wang ◽  
Wei Zhang ◽  
...  

The WS structure with a multipoint model succeeds in addressing the sluggish electron/ion transfer at the yolk–shell interface and structural degradation.


2017 ◽  
Vol 4 (10) ◽  
pp. 170892 ◽  
Author(s):  
Hong He ◽  
Yuhong Man ◽  
Jingang Yang ◽  
Jiale Xie ◽  
Maowen Xu

MoO 2 nanosheets embedded in the amorphous carbon matrix (MoO 2 /C) are successfully synthesized via a facile hydrothermal method and investigated as an anode for sodium-ion batteries. Because of the efficient ion transport channels and good volume change accommodation, MoO 2 /C delivers a discharge/charge capacity of 367.8/367.0 mAh g −1 with high coulombic efficiency (99.4%) after 100 cycles at a current density of 50 mA g −1 .


Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.


Ionics ◽  
2020 ◽  
Author(s):  
Rundie Liu ◽  
Zhenguo Wu ◽  
Qin Hu ◽  
Gongke Wang ◽  
Yuxia Liu ◽  
...  

2020 ◽  
Vol 56 (45) ◽  
pp. 6078-6081 ◽  
Author(s):  
Changhao Li ◽  
Yi Sun ◽  
Qiujie Wu ◽  
Xin Liang ◽  
Chunhua Chen ◽  
...  

A schematic illustration showing the preparation of HCM from a single sodium lignin sulfonate source and the process of Na storage.


2016 ◽  
Vol 8 (8) ◽  
pp. 5393-5399 ◽  
Author(s):  
Xianyong Wu ◽  
Chenghao Wu ◽  
Congxiao Wei ◽  
Ling Hu ◽  
Jiangfeng Qian ◽  
...  

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