scholarly journals Aggregation-Morphology-Dependent Electrochemical Performance of Co3O4 Anode Materials for Lithium-Ion Batteries

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3149 ◽  
Author(s):  
Linglong Kong ◽  
Lu Wang ◽  
Deye Sun ◽  
Su Meng ◽  
Dandan Xu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Retention Rate ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Superior Performance ◽  
Electrode Structure ◽  
Transfer Resistance

The aggregation morphology of anode materials plays a vital role in achieving high performance lithium-ion batteries. Herein, Co3O4 anode materials with different aggregation morphologies were successfully prepared by modulating the morphology of precursors with different cobalt sources by the mild coprecipitation method. The fabricated Co3O4 can be flower-like, spherical, irregular, and urchin-like. Detailed investigation on the electrochemical performance demonstrated that flower-like Co3O4 consisting of nanorods exhibited superior performance. The reversible capacity maintained 910.7 mAh·g−1 at 500 mA·g−1 and 717 mAh·g−1 at 1000 mA·g−1 after 500 cycles. The cyclic stability was greatly enhanced, with a capacity retention rate of 92.7% at 500 mA·g−1 and 78.27% at 1000 mA·g−1 after 500 cycles. Electrochemical performance in long-term storage and high temperature conditions was still excellent. The unique aggregation morphology of flower-like Co3O4 yielded a reduction of charge-transfer resistance and stabilization of electrode structure compared with other aggregation morphologies.

Hybrids of Mo2C nanoparticles anchored on graphene sheets as anode materials for high performance lithium-ion batteries

2015 ◽  
Vol 3 (33) ◽  
pp. 17403-17411 ◽  
Author(s):  
Beibei Wang ◽  
Gang Wang ◽  
Hui Wang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Environmentally Friendly ◽  
Graphene Sheets ◽  
Novel Strategy

We propose a novel strategy to fabricate Mo2C/GR hybrids through a simple and environmentally friendly carburization process. The as-prepared Mo2C/GR hybrids display significantly improved electrochemical performance compared to bulk Mo2C and pure GR.

MOF-derived, N-doped porous carbon coated graphene sheets as high-performance anodes for lithium-ion batteries

2016 ◽  
Vol 40 (11) ◽  
pp. 9679-9683 ◽  
Author(s):  
Xin Liu ◽  
Shichao Zhang ◽  
Yalan Xing ◽  
Shengbin Wang ◽  
Puheng Yang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Graphene Sheet ◽  
Porous Carbon ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Graphene Sheets ◽  
Carbon Coated

N-doped porous carbon coated graphene sheet anode materials exhibit fascinating electrochemical performance with a capacity of 1040 mA h g−1.

scholarly journals Ordered ZnO/Ni Hollow Microsphere Arrays as Anode Materials for Lithium Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1193 ◽  
Author(s):  
Shen ◽  
Zhong ◽  
Huang ◽  
Lin ◽  
Wang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Electrode Materials ◽  
Colloidal Crystal ◽  
Retention Rate ◽  
Coulombic Efficiency ◽  
Hollow Microsphere ◽  
Lithium Ion ◽  
Electrode Polarization

Well-designed nanostructures are very important for the electrochemical performance of lithium-ion electrode materials. In order to improve the electrochemical performance of ZnO-based anode materials, ZnO/Ni composite film, assembled by ordered hollow microsphere arrays, is designed and fabricated by means of magnetron sputtering technique using a colloidal crystal template composed of a monolayer of ordered polystyrene (PS) microspheres. The ordered hollow microsphere structure as well as the constituent Ni component of the ZnO/Ni film show major advantages of homogenizing electrode reactions, enhancing electrode reaction kinetics and accommodating volume change of active materials, so they can reduce electrode polarization and stabilize electrode structure. Consequently, the resulting ordered ZnO/Ni hollow microspheres arrays deliver an initial charge capacity of 685 mAh g−1, an initial coulombic efficiency of 68%, and a capacity retention rate of 69% after 100 cycles, all of which are higher than those of the pure ZnO film. These results show progress in developing more stable ZnO-based anode materials for lithium ion batteries.

Preparation and Electrochemical Performance of Mg2 + Doped Li4Ti5O12 Anode Materials for Lithium-Ion Batteries

2019 ◽  
Vol 960 ◽  
pp. 238-243
Author(s):  
Ming Wang ◽  
Xue Ming Zhang ◽  
Ying Bo Wang ◽  
Li Li Cheng ◽  
Xue Lei Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Impedance ◽  
Solid Phase ◽  
Retention Rate ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Transfer Resistance

Spinel Li4Ti5O12 (LTO) doped with Mg2+ was synthesized by solid-phase reaction method. The Mg2+ doping quantity was 3%, 6%, 9%, and 12%, respectively. The structure and electrochemical performance of the prepared LTO composites were investigated by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Electrochemical Impedance Spectroscopy (EIS), and galvanostatic charge-discharge tests. It was found that the doped Mg ion did not change the structure of Li4Ti5O12, and it was evenly distributed around Li4Ti5O12. When Mg2+ doping quantity increased from 3% to 12%, the internal resistance and charge transfer resistance of the composite both decreased. The first discharge specific capacity of 6%-Mg2+ doped LTO composite was 168 mAh/g, which was close to the theoretical capacity of pure lithium titanate (175 mAh/g), and the capacity retention rate was 98% after 100 cycles.

3D porous hybrids of defect-rich MoS2/graphene nanosheets with excellent electrochemical performance as anode materials for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34777-34787 ◽  
Author(s):  
Longsheng Zhang ◽  
Wei Fan ◽  
Weng Weei Tjiu ◽  
Tianxi Liu
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Lithium Ion ◽  
Excellent Electrochemical Performance

3D porous hybrids of defect-rich MoS2/graphene nanosheets (dr-MoS2/GNS) exhibit extraordinary electrochemical performance as anode materials for high performance lithium ion batteries (LIBs).

Direct large-scale synthesis of 3D hierarchical mesoporous NiO microspheres as high-performance anode materials for lithium ion batteries

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3268-3273 ◽  
Author(s):  
Zhongchao bai ◽  
Zhicheng Ju ◽  
Chunli Guo ◽  
Yitai Qian ◽  
Bin Tang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Decomposition Method ◽  
High Performance ◽  
Large Scale ◽  
Lithium Ion ◽  
Superior Performance ◽  
Thermal Decomposition Method ◽  
Large Scale Synthesis

3D hierarchical mesoporous NiO microspheres were scalably synthesized by a thermal decomposition method; they exhibit superior performance as anode materials for LIBs.

Synthesis of graphene-wrapped ZnMn2O4 hollow microspheres as high performance anode materials for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99107-99114 ◽  
Author(s):  
Tong Zhang ◽  
Huijuan Yue ◽  
Hailong Qiu ◽  
Kai Zhu ◽  
Lijie Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Hollow Microspheres ◽  
Excellent Electrochemical Performance

A facile method for the synthesis of graphene-wrapped ZnMn2O4 hollow microspheres which show excellent electrochemical performance.

Cobalt-doped Zn2GeO4 nanorods assembled into hollow spheres as high-performance anode materials for lithium-ion batteries

2018 ◽  
Vol 6 (14) ◽  
pp. 5926-5934 ◽  
Author(s):  
Jiaxue Lu ◽  
Deli Li ◽  
Li Li ◽  
Yao Chai ◽  
Meng Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Hollow Spheres ◽  
Lithium Ion ◽  
Enhanced Electrochemical Performance ◽  
Co Doped

The synthesis of novel Co doped Zn2GeO4 hollow micro-spheres and the enhanced electrochemical performance for lithium-ion batteries.

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