scholarly journals Silicon-Encapsulated Hollow Carbon Nanofiber Networks as Binder-Free Anodes for Lithium Ion Battery

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Ding Nan ◽  
Zheng-Hong Huang ◽  
Ruitao Lv ◽  
Yuxiao Lin ◽  
Lu Yang ◽  
...  

Silicon-encapsulated hollow carbon nanofiber networks with ample space around the Si nanoparticles (hollow Si/C composites) were successfully synthesized by dip-coating phenolic resin onto the surface of electrospun Si/PVA nanofibers along with the subsequent solidification and carbonization. More importantly, the structure and Si content of hollow Si/C composite nanofibers can be effectively tuned by merely varying the concentration of dip solution. As-synthesized hollow Si/C composites show excellent electrochemical performance when they are used as binder-free anodes for Li-ion batteries (LIBs). In particular, when the concentration of resol/ethanol solution is 3.0%, the product exhibits a large capacity of 841 mAh g−1in the first cycle, prominent cycling stability, and good rate capability. The discharge capacity retention of it was ~90%, with 745 mAh g−1after 50 cycles. The results demonstrate that the hollow Si/C composites are very promising as alternative anode candidates for high-performance LIBs.

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37556-37561
Author(s):  
Xin Chen ◽  
Guojun Gao ◽  
Zhipeng Wu ◽  
Jun Xiang ◽  
Xiaoqiang Li ◽  
...  

A novel binder-free LIB anode made of ultrafine MoO2 nanoparticles encapsulated in hierarchically porous carbon nanofibers exhibits high Li-storage performance.


2018 ◽  
Vol 29 (12) ◽  
pp. 125401 ◽  
Author(s):  
Jie Zhang ◽  
Ruixia Chu ◽  
Yanli Chen ◽  
Heng Jiang ◽  
Ying Zhang ◽  
...  

2015 ◽  
Vol 3 (4) ◽  
pp. 1619-1623 ◽  
Author(s):  
Heyuan Qiu ◽  
Lingxing Zeng ◽  
Tongbin Lan ◽  
Xiaokun Ding ◽  
Mingdeng Wei

The GeO2/RGO electrode is successfully fabricated via a facile dip-coating route cooperated with in situ hydrolysis of GeCl4 and used directly as a binder-free anode for LIBs. This material exhibited high reversible capacity, good cycling performance and excellent rate capability.


Nanoscale ◽  
2015 ◽  
Vol 7 (5) ◽  
pp. 1830-1838 ◽  
Author(s):  
Bing Li ◽  
Xiaoming Ge ◽  
F. W. Thomas Goh ◽  
T. S. Andy Hor ◽  
Dongsheng Geng ◽  
...  

A facile method is developed for the fabrication of Co3O4 nanoparticles decorated carbon nanofibers, which enable significant improvement of rechargeable Zn-air batteries with respect to rate capability, cycling stability and energy density.


Nanoscale ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 617-625 ◽  
Author(s):  
Li Sun ◽  
Weibang Kong ◽  
Hengcai Wu ◽  
Yang Wu ◽  
Datao Wang ◽  
...  

A binder-free composite anode constructed by anchoring mesoporous lithium titanate nanoclusters in a carbon nanotube network exhibits high capacities, long-term cyclic stability, and excellent high-rate capability.


2018 ◽  
Vol 24 (38) ◽  
pp. 9632-9638 ◽  
Author(s):  
Dan Zhang ◽  
Guangshe Li ◽  
Jianming Fan ◽  
Baoyun Li ◽  
Liping Li

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ruye Cong ◽  
Jin-Yeong Choi ◽  
Ju-Beom Song ◽  
Minsang Jo ◽  
Hochun Lee ◽  
...  

AbstractWe report the interfacial study of a silicon/carbon nanofiber/graphene composite as a potentially high-performance anode for rechargeable lithium-ion batteries (LIBs). Silicon nanoparticle (Si)/carbon nanofiber (CNF)/reduced graphene oxide (rGO) composite films were prepared by simple physical filtration and an environmentally-friendly thermal reduction treatment. The films were used as high-performance anode materials for self-supporting, binder-free LIBs. Reducing graphene oxide improves the electron conductivity and adjusts to the volume change during repeated charge/discharge processes. CNFs can help maintain the structural stability and prevent the peeling off of silicon nanoparticles from the electrodes. When the fabricated Si/CNF/rGO composites were used as anodes of LIBs, the initial specific capacity was measured to be 1894.54 mAh/g at a current density of 0.1 A/g. After 100 cycles, the reversible specific capacity was maintained at 964.68 mAh/g, and the coulombic efficiency could reach 93.8% at the same current density. The Si/CNF/rGO composite electrode exhibited a higher specific capacity and cycle stability than an Si/rGO composite electrode. The Si/CNF/rGO composite films can effectively accommodate and buffer changes in the volume of silicon nanoparticles, form a stable solid–electrolyte interface, improve the conductivity of the electrode, and provide a fast and efficient channel for electron and ion transport.


2020 ◽  
Vol 13 (3) ◽  
pp. 848-858 ◽  
Author(s):  
Hanwei Wang ◽  
Jinzhou Fu ◽  
Chao Wang ◽  
Jiangyan Wang ◽  
Ankun Yang ◽  
...  

A high performance, binder-free flexible silicon electrode with high Si content up to 92% is developed for lithium ion batteries with a novel cellulose-based topological microscroll structure.


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