scholarly journals A Strategic Approach to Use Upcycled Si Nanomaterials for Stable Operation of Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3248
Author(s):  
Junghwan Kim ◽  
Jisoo Kwon ◽  
Min Ji Kim ◽  
Min Ju O ◽  
Dae Soo Jung ◽  
...  

Silicon, as a promising next-generation anode material, has drawn special attention from industries due to its high theoretical capacity (around 3600 mAh g−1) in comparison with conventional electrodes, e.g., graphite. However, the fast capacity fading resulted by a large volume change hinders the pragmatic use of Si anodes for lithium ion batteries. In this work, we propose an efficient strategy to improve the cyclability of upcycled Si nanomaterials through a simple battery operation protocol. When the utilization degree of Si electrodes was decreased, the electrode deformation was significantly alleviated. This directly led to an excellent electrochemical performance over 100 cycles. In addition, the average charge (delithation) voltage was shifted to a lower voltage, when the utilization degree of electrodes was controlled. These results demonstrated that our strategic approach would be an effective way to enhance the electrochemical performance of Si anodes and improve the cost-effectiveness of scaling-up the decent nanostructured Si material.

2016 ◽  
Vol 4 (40) ◽  
pp. 15302-15308 ◽  
Author(s):  
Zhigao Luo ◽  
Jiang Zhou ◽  
Lirong Wang ◽  
Guozhao Fang ◽  
Anqiang Pan ◽  
...  

We report the synthesis of a novel 2D hybrid nanosheet constructed by few layered MoSe2 grown on reduced graphene oxide (rGO), which exhibits excellent electrochemical performance as anodes for lithium ion batteries.


2017 ◽  
Vol 5 (14) ◽  
pp. 6522-6531 ◽  
Author(s):  
Yining Ma ◽  
Aibin Huang ◽  
Huaijuan Zhou ◽  
Shidong Ji ◽  
Shuming Zhang ◽  
...  

Various V2O5 hierarchical structures were successfully synthesized via a template-free method and exhibited excellent electrochemical performance.


2019 ◽  
Vol 48 (6) ◽  
pp. 2019-2027 ◽  
Author(s):  
Weiwei Sun ◽  
Si Chen ◽  
Yong Wang

A MOF-derived approach is used to fabricate a Fe–Mn–O/C hollow microsphere anode, which delivers excellent electrochemical performance for lithium-ion batteries.


2015 ◽  
Vol 3 (34) ◽  
pp. 17713-17720 ◽  
Author(s):  
Li Liu ◽  
Taeseup Song ◽  
Hyungkyu Han ◽  
Hyunjung Park ◽  
Juan Xiang ◽  
...  

Porous LiMnPO4/C composite nanofibers show excellent electrochemical performance including a high reversible capacity of 112.7 mA h g−1 and stable cycle retention of 95% after 100 cycles.


2020 ◽  
Vol 2 (1) ◽  
pp. 512-519
Author(s):  
D. D. Yang ◽  
M. Zhao ◽  
R. D. Zhang ◽  
Y. Zhang ◽  
C. C. Yang ◽  
...  

The hybrid material of NiS2 nanoparticles anchored on carbon nanohelmets (NiS2/CNHs) shows excellent electrochemical performance in Li-ion batteries.


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