Hierarchical SnO2 Nanosheets Array as Ultralong-Life Integrated Anode for Lithium-Ion Batteries

NANO ◽  
2017 ◽  
Vol 12 (06) ◽  
pp. 1750077 ◽  
Author(s):  
Shuang Yuan ◽  
Yue Zhao ◽  
Weibin Chen ◽  
Lina Zhang ◽  
Qiang Wang

Integrated SnO2 electrode with hierarchical nanosheets array structure growing on three-dimensional (3D) macroporous Ni foam substrates is successfully prepared via a facile and effective template-free route. The self-supported integrated electrode can be directly used as anode for lithium-ion batteries (LIBs) without adding any ancillary materials. As a result, such integrated electrode exhibits superior electrochemical performances. It maintains a high reversible discharge capacity of 1617.8[Formula: see text]mAh[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] and a high cycling stability of 829.2[Formula: see text]mAh[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] even after 500 cycles. The unique structural features with large areas, shorter transport path of ion and electron as well as robust mechanical strength are probably responsible for the enhanced performance.

RSC Advances ◽  
2014 ◽  
Vol 4 (69) ◽  
pp. 36502-36506 ◽  
Author(s):  
Chenfeng Guo ◽  
Jingxuan Mao ◽  
Dianlong Wang

A Three-dimensional (3D) multilayered nanostructure to improve the electrode performance of SiO-based material through the use of reduced graphene oxide (RGO) film and a Ni foam substrate has been developed.


Author(s):  
K.A. Beysembaeva ◽  
◽  
Zh.D. Nurymov ◽  

The paper considers various methods of conformal coating the three-dimensional structure of Ni foam with polymers as electrolytes in lithium-ion batteries. Polymethylmethacrylate (PMMA), polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), and polyethylene oxide (PEO) were chosen as polymer electrolytes because of their good ionic conductivity and mechanical stability. Conformal coating was performed using two methods: drop coating, dip coating. The polymer-coated three-dimensional Ni foams were characterized by field-emission scanning electron microscopy (FE-SEM) to determine the more conformal coating method and testing the ionic conductivity of polymers. From this research, it could be concluded that the dip coating method allows a more conformal coating of the three-dimensional Ni foam structure and the polymers obtained by this method have a good value of ionic conductivity.


2016 ◽  
Vol 4 (29) ◽  
pp. 11507-11515 ◽  
Author(s):  
Yangyang Feng ◽  
Huijuan Zhang ◽  
Ling Fang ◽  
Wenxiang Li ◽  
Yu Wang

We report novel 3D flower-like Al2O3 anchoring hollow NiO nanoparticles, which exhibits outstanding electrochemical performances in LIBs.


2016 ◽  
Vol 767 ◽  
pp. 49-55 ◽  
Author(s):  
Jing Zhang ◽  
Zengsheng Ma ◽  
Wenjuan Jiang ◽  
Youlan Zou ◽  
Yan Wang ◽  
...  

2018 ◽  
Vol 6 (45) ◽  
pp. 22655-22661 ◽  
Author(s):  
Zhiya Lin ◽  
Guozhen Liu ◽  
Yongping Zheng ◽  
Yingbin Lin ◽  
Zhigao Huang

Three-dimensional hierarchical flower-like TiO2@graphdiyne exhibits superior electrochemical performances in terms of reversible capacities, rate capability and cycling stability, which can be explained by electron percolation and built-in electric field.


2021 ◽  
Vol 9 ◽  
Author(s):  
Wenqiang Zhu ◽  
Junjian Zhou ◽  
Shuang Xiang ◽  
Xueting Bian ◽  
Jiang Yin ◽  
...  

Silicon (Si) has been counted as the most promising anode material for next-generation lithium-ion batteries, owing to its high theoretical specific capacity, safety, and high natural abundance. However, the commercial application of silicon anodes is hindered by its huge volume expansions, poor conductivity, and low coulombic efficiency. For the anode manufacture, binders play an important role of binding silicon materials, current collectors, and conductive agents, and the binder structure can significantly affect the mechanical durability, adhesion, ionic/electronic conductivities, and solid electrolyte interface (SEI) stability of the silicon anodes. Moreover, many cross-linked binders are effective in alleviating the volume expansions of silicon nanosized even microsized anodic materials along with maintaining the anode integrity and stable electrochemical performances. This mini review comprehensively summarizes various binders based on their structures, including the linear, branched, three-dimensional (3D) cross-linked, conductive polymer, and other hybrid binders. The mechanisms how various binder structures influence the performances of the silicon anodes, the limitations, and prospects of different hybrid binders are also discussed. This mini review can help in designing hybrid polymer binders and facilitating the practical application of silicon-based anodes with high electrochemical activity and long-term stability.


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