Encapsulation of α-Fe2O3 nanoparticles in graphitic carbon microspheres as high-performance anode materials for lithium-ion batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (7) ◽  
pp. 3270-3275 ◽  
Author(s):  
Hongwei Zhang ◽  
Xiaoran Sun ◽  
Xiaodan Huang ◽  
Liang Zhou

A novel “spray drying–carbonization–oxidation” strategy has been developed to fabricate an α-Fe2O3@graphitic carbon nanocomposite with a high reversible capacity, excellent cycling stability, and outstanding rate capability.

2016 ◽  
Vol 4 (2) ◽  
pp. 425-433 ◽  
Author(s):  
Qiang Wang ◽  
Binwei Yu ◽  
Xiao Li ◽  
Lili Xing ◽  
Xinyu Xue

Core–shell Co3O4/ZnCo2O4 hollow spheres exhibit superior electrochemical performance with high reversible capacity, excellent cycling stability and good rate capability.


2016 ◽  
Vol 4 (23) ◽  
pp. 9177-9183 ◽  
Author(s):  
Dongming Cui ◽  
Di Tian ◽  
Shasha Chen ◽  
Liangjie Yuan

Graphene wrapped 3,4,9,10-perylenetetracarboxylic dianhydride shows a high reversible capacity, an excellent cycling stability and a superior rate capability for Li-ion batteries.


RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 63012-63016 ◽  
Author(s):  
Yourong Wang ◽  
Wei Zhou ◽  
Liping Zhang ◽  
Guangsen Song ◽  
Siqing Cheng

A SiO2@NiO core–shell electrode exhibits almost 100% coulombic efficiency, excellent cycling stability and rate capability after the first few cycles.


2015 ◽  
Vol 3 (7) ◽  
pp. 3962-3967 ◽  
Author(s):  
Xiaolei Wang ◽  
Ge Li ◽  
Fathy M. Hassan ◽  
Matthew Li ◽  
Kun Feng ◽  
...  

High-performance robust CNT–graphene–Si composites are designed as anode materials with enhanced rate capability and excellent cycling stability for lithium-ion batteries. Such an improvement is mainly attributed to the robust sponge-like architecture, which holds great promise in future practical applications.


2016 ◽  
Vol 18 (29) ◽  
pp. 19531-19535 ◽  
Author(s):  
Chunshuang Yan ◽  
Gang Chen ◽  
Jingxue Sun ◽  
Xin Zhou ◽  
Chade Lv

C&N co-doped Co3O4 hollow nanofibres are prepared by combining the electrospinning technique and the hydrothermal method, which show a high reversible capacity and excellent cycling stability as anode materials for Li-ion batteries.


RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7356-7362 ◽  
Author(s):  
Minchan Li ◽  
Wenxi Wang ◽  
Mingyang Yang ◽  
Fucong Lv ◽  
Lujie Cao ◽  
...  

A novel microcuboid-shaped C–Fe3O4 assembly consisting of ultrafine nanoparticles derived from Fe–MOFs exhibits a greatly enhanced performance with high specific capacity, excellent cycling stability and good rate capability as anode materials for lithium ion batteries.


2019 ◽  
Vol 48 (28) ◽  
pp. 10422-10426 ◽  
Author(s):  
Xing Meng ◽  
Hai-Ning Wang ◽  
Yan-Hong Zou ◽  
Lu-Song Wang ◽  
Zi-Yan Zhou

POM-based metallogels are employed as anode materials for the first time, which exhibit high reversible capacity, high rate capability, and good cycling stability.


RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63784-63791 ◽  
Author(s):  
Junke Ou ◽  
Yongzhi Zhang ◽  
Li Chen ◽  
Hongyan Yuan ◽  
Dan Xiao

The HDPC derived from human hair shows superior performance as an anode material for LIBs with high reversible capacity (1331 mA h g−1 at 0.1 A g−1) and excellent rate capability (205 mA h g−1 at 10 A g−1).


Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 827 ◽  
Author(s):  
Ying Liu ◽  
Xueying Li ◽  
Anupriya K. Haridas ◽  
Yuanzheng Sun ◽  
Jungwon Heo ◽  
...  

Lithium ion (Li-ion) batteries have been widely applied to portable electronic devices and hybrid vehicles. In order to further enhance performance, the search for advanced anode materials to meet the growing demand for high-performance Li-ion batteries is significant. Fe3C as an anode material can contribute more capacity than its theoretical one due to the pseudocapacity on the interface. However, the traditional synthetic methods need harsh conditions, such as high temperature and hazardous and expensive chemical precursors. In this study, a graphitic carbon encapsulated Fe/Fe3C (denoted as Fe/Fe3C@GC) composite was synthesized as an anode active material for high-performance lithium ion batteries by a simple and cost-effective approach through co-pyrolysis of biomass and iron precursor. The graphitic carbon shell formed by the carbonization of sawdust can improve the electrical conductivity and accommodate volume expansion during discharging. The porous microstructure of the shell can also provide increased active sites for the redox reactions. The in-situ-formed Fe/Fe3C nanoparticles show pseudocapacitive behavior that increases the capacity. The composite exhibits a high reversible capacity and excellent rate performance. The composite delivered a high initial discharge capacity of 1027 mAh g−1 at 45 mA g−1 and maintained a reversible capacity of 302 mAh g−1 at 200 mA g−1 after 200 cycles. Even at the high current density of 5000 mA g−1, the Fe/Fe3C@GC cell also shows a stable cycling performance. Therefore, Fe/Fe3C@GC composite is considered as one of the potential anode materials for lithium ion batteries.


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