The design and synthesis of porous NiCo2O4 ellipsoids supported by flexile carbon nanotubes with enhanced lithium-storage properties for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 31925-31933 ◽  
Author(s):  
Yudi Mo ◽  
Qiang Ru ◽  
Xiong Song ◽  
Junfen Chen ◽  
Xianhua Hou ◽  
...  

The as-prepared 3D porous NiCo2O4 ellipsoids supported by flexile carbon nanotubes nanowire arrays show high reversible capacity, excellent cycling stability, and good rate capability when used as an anode material for LIBs.

2015 ◽  
Vol 3 (9) ◽  
pp. 5083-5091 ◽  
Author(s):  
Qiang Wang ◽  
Jing Sun ◽  
Qi Wang ◽  
De-an Zhang ◽  
Lili Xing ◽  
...  

α-MoO3–In2O3 core–shell nanorods have been synthesized by a hydrothermal method. As anodes of LIBs, they exhibit excellent lithium storage performance with high reversible capacity, excellent cyclability and good rate capability.


2018 ◽  
Vol 42 (13) ◽  
pp. 10935-10939 ◽  
Author(s):  
Kai Xie ◽  
Zhenghao Liu ◽  
Yourong Wang ◽  
Guangsen Song ◽  
Siqing Cheng

The easily prepared hierarchical MoS2 nanotori demonstrate superior reversible capacity, good rate capability and excellent cyclic performance.


2016 ◽  
Vol 4 (2) ◽  
pp. 605-611 ◽  
Author(s):  
Qing Xia ◽  
Hailei Zhao ◽  
Zhihong Du ◽  
Zijia Zhang ◽  
Shanming Li ◽  
...  

3-D hierarchical MoO2/Ni/C, with high reversible capacity and excellent rate capability, is a promising candidate for anode materials of lithium ion batteries.


2015 ◽  
Vol 3 (39) ◽  
pp. 19765-19773 ◽  
Author(s):  
Yudi Mo ◽  
Qiang Ru ◽  
Junfen Chen ◽  
Xiong Song ◽  
Lingyun Guo ◽  
...  

The as-prepared 3D NCO@CFC nanowire arrays show high reversible capacity, excellent cycling stability, and good rate capability when used as an anode material for LIBs and SIBs.


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.


RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 18-22 ◽  
Author(s):  
Jinxue Guo ◽  
Xiaohong Zhang ◽  
Yanfang Sun ◽  
Xiao Zhang

Mesoporous CoFe2O4 octahedra have been synthesized through sol–gel method, and their large and stable reversible capacity, high capacity retention, good rate capability, and ultralong cycling life have also been demonstrated.


RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85256-85263 ◽  
Author(s):  
Shan Fang ◽  
Laifa Shen ◽  
Hao Zheng ◽  
Zhenkun Tong ◽  
Gang Pang ◽  
...  

In this study, germanium NPs confined in the pore channels of N-doped carbon matrix. This composite show a superior electrochemical performances, in terms of their high reversible capacity, good rate capability, and stable cyclability.


2021 ◽  
pp. 2150031
Author(s):  
Hai Li ◽  
Chunxiang Lu

As anode material for lithium-ion batteries, graphite has the disadvantage of relatively low specific capacity. In this work, a simple yet effective strategy to overcome the disadvantages by using a composite of flake graphite (FG) and small-sized graphene (SG) has been developed. The FG/SG composite prepared by dispersing FG and SG (90:10 w/w) in ethanol and drying delivers much higher specific capacity than that of individual component except for improved rate capability. More surprisingly, FG/SG composite delivers higher reversible capacity than its theoretical value calculated according to the theoretical capacities of graphite and graphene. Therefore, a synergistic effect between FG and SG in lithium storage is clearly discovered. To explain it, we propose a model that abundant nanoscopic cavities were formed due to physical adhesion between FG and SG and could accommodate extra lithium.


NANO ◽  
2019 ◽  
Vol 14 (03) ◽  
pp. 1950037 ◽  
Author(s):  
Bingning Wang ◽  
Xuehua Liu ◽  
Binghui Xu ◽  
Yanhui Li ◽  
Dan Xiu ◽  
...  

Three-dimensional reduced graphene oxide (RGO) matrix decorated with nanoflowers of layered MoS2 (denoted as 3D MoS2/RGO) have been synthesized via a facile one-pot stepwise hydrothermal method. Graphene oxide (GO) is used as precursor of RGO and a 3D GO network is formed in the first-step of hydrothermal treatment. At the second stage of hydrothermal treatment, nanoflowers of layered MoS2 form and anchor on the surface of previously formed 3D RGO network. In this preparation, thiourea not only induces the formation of the 3D architecture at a relatively low temperature, but also works as sulfur precursor of MoS2. The synthesized composites have been investigated with XRD, SEM, TEM, Raman spectra, TGA, N2 sorption technique and electrochemical measurements. In comparison with normal MoS2/RGO composites, the 3D MoS2/RGO composite shows improved electrochemical performance as anode material for lithium-ion batteries. A high reversible capacity of 930[Formula: see text]mAh[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] after 130 cycles under a current density of 200[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] as well as good rate capability and superior cyclic stability have been observed. The superior electrochemical performance of the 3D MoS2/RGO composite as anode active material for lithium-ion battery is ascribed to its robust 3D structures, enhanced surface area and the synergistic effect between graphene matrix and the MoS2 nanoflowers subunit.


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