One-Step Fabrication of Fe-Si-O/Carbon Nanotube Composite Anode Material with Excellent High-Rate Long-Term Cycling Stability

MRS Advances ◽  
2017 ◽  
Vol 2 (21-22) ◽  
pp. 1157-1163
Author(s):  
Yun-Kai Sun ◽  
Xue Bai ◽  
Tao Li ◽  
Gui-Xia Lu ◽  
Yong-Xin Qi ◽  
...  

ABSTRACTThe composite Li-ion battery anode material of Fe2SiO4, Fe3O4, Fe3C (Fe-Si-O) and carbon nanotubes was prepared by a simple one-step reaction between ferrocene and tetraethyl orthosilicate. When cycled at 100 mA g-1, this material exhibited ever-increasing capacities and reached 588 mAh g-1 at the 280th cycle. At 500 mA g-1, a reversible capacity of 350 mAh g-1 was retained for 600 cycles. Compared with Fe3O4 materials, the Fe-Si-O/CNT exhibited superior long-term high-rate performance, which could mainly result from its enhanced stability and conductivities by introducing silicates and CNTs during the one-step synthesis.

2017 ◽  
Vol 5 (17) ◽  
pp. 8087-8094 ◽  
Author(s):  
Yutao Dong ◽  
Dan Li ◽  
Chengwei Gao ◽  
Yushan Liu ◽  
Jianmin Zhang

Self-assembled 3D urchin-like Ti0.8Sn0.2O2–rGO was fabricated by a one-step hydrothermal process as an anode material for high-rate and long cycle life LIBs.


2016 ◽  
Vol 4 (35) ◽  
pp. 13646-13651 ◽  
Author(s):  
Cheng Zheng ◽  
Minying Liu ◽  
Wenqiang Chen ◽  
Lingxing Zeng ◽  
Mingdeng Wei

A Se/CMK-3 composite was in situ synthesized, exhibiting large capacity, high rate performance and excellent long-term cycling stability for Li-ion intercalation.


2016 ◽  
Vol 4 (38) ◽  
pp. 14687-14692 ◽  
Author(s):  
Fei Ye ◽  
Yuncheng Hu ◽  
Yong Zhao ◽  
Degui Zhu ◽  
Yonggui Wang ◽  
...  

A new hierarchical hollow α-Fe2O3 nanostructure that has a nanosphere morphology of approximately 250 nm in diameter integrated with ensembles of 15 nm diameter nanotubes is designed and engineered. As an anode material for Li-ion batteries, the HHFN exhibits significantly improved Li storage capability, good cycling stability, as well as high-rate performance.


2010 ◽  
Vol 150-151 ◽  
pp. 1387-1390
Author(s):  
Cheng Zhao Yang ◽  
Guo Qing Zhang ◽  
Lei Zhang ◽  
Li Ma

A composite anode material of SnO2/graphite(GT)/carbon nanotube(CNT) for lithium-ion batteries was prepared by ball milling. It was observed that SnO2 particles were homogeneously embedded into the buffering matrix of graphite particles. This composite anode material showed an increased initial coulombic efficiencies of 56% in the first cycle, and after 25 charge–discharge cycles, a reversible capacity of 431 mAh/g was obtained, much higher than 282 mAh/g of SnO2/GT composite and 177 mAh/g of pure SnO2. The improvement in the electrochemical properties of the composite anode materials was mainly attributed to good electric conductivity of the CNT network and the excellent resiliency.


2012 ◽  
Vol 68 ◽  
pp. 32-35 ◽  
Author(s):  
Shaowei Zheng ◽  
Yunlong Xu ◽  
Chongjun Zhao ◽  
Huakun Liu ◽  
Xiuzhen Qian ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 22
Author(s):  
Nurbolat Issatayev ◽  
Gulnur Kalimuldina ◽  
Arailym Nurpeissova ◽  
Zhumabay Bakenov

New porous activated carbons with a high surface area as an anode material for lithium-ion batteries (LIBs) were synthesized by a one-step, sustainable, and environmentally friendly method. Four chemical activators—H2SO4, H3PO4, KOH, and ZnCl2—have been investigated as facilitators of the formation of the porous structure of activated carbon (AC) from an agar precursor. The study of the materials by Brunauer–Emmett–Teller (BET) and scanning electron microscopy (SEM) methods revealed its highly porous meso- and macro-structure. Among the used chemical activators, the AC prepared with the addition of KOH demonstrated the best electrochemical performance upon its reaction with lithium metal. The initial discharge capacity reached 931 mAh g−1 and a reversible capacity of 320 mAh g−1 was maintained over 100 cycles at 0.1 C. High rate cycling tests up to 10 C demonstrated stable cycling performance of the AC from agar.


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