scholarly journals Investigation of phase transformations and corrosion resistance in Co/CoCo2O4 nanowires and their potential use as a basis for lithium-ion batteries

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
M. V. Zdorovets ◽  
A. L. Kozlovskiy
Keyword(s):  
Phase Transition ◽  
Corrosion Resistance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Oxide Nanostructures ◽  
Life Tests ◽  
Potential Use ◽  
Charge Discharge ◽  
Partial Destruction

Abstract The paper is devoted to the study of the effect of thermal annealing on the change in the structural properties and phase composition of metal Co nanostructures, as well as the prospects of their use as anode materials for lithium-ion batteries. During the study, a four-stage phase transition in the structure of nanowires consisting of successive transformations of the structure (Со-FCC/Co-HCP) → (Со-FCС) → (Со-FCC/СоСо2О4) → (СоСо2О4), accompanied by uniform oxidation of the structure of nanowires with an increase in temperature above 400 °C. In this case, an increase in temperature to 700 °C leads to a partial destruction of the oxide layer and surface degradation of nanostructures. During life tests, it was found that the lifetime for oxide nanostructures exceeds 500 charge/discharge cycles, for the initial nanostructures and annealed at a temperature of 300 °С, the lifetimes are 297 and 411 cycles, respectively. The prospects of using Co/CoCo2O4 nanowires as the basis for lithium-ion batteries is shown.

Graphite-like structure of disordered polynaphthalene hard carbon anode derived from carbonization of perylene-3,4,9,10-tetracarboxylic dianhydride for fast charging lithium-ion batteries

2021 ◽  
Author(s):  
yitao lou ◽  
XianFa Rao ◽  
Jianjun Zhao ◽  
Jun Chen ◽  
Baobao Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Lithium Ion Batteries ◽  
Carbon Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Anode ◽  
Hard Carbon ◽  
Fast Charging ◽  
Tetracarboxylic Dianhydride ◽  
Charge Discharge

In order to develop novel fast charge/discharge carbon anode materials, an organic hard carbon material (PTCDA-1100) is obtained by calcination of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) at high temperature of 1100 oC....

Hollow core–shell structured Si/C nanocomposites as high-performance anode materials for lithium-ion batteries

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3138-3142 ◽  
Author(s):  
Huachao Tao ◽  
Li-Zhen Fan ◽  
Wei-Li Song ◽  
Mao Wu ◽  
Xinbo He ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Core Shell ◽  
Discharge Process ◽  
Hollow Core ◽  
A Charge ◽  
Large Volume Change ◽  
Charge Discharge

Hollow core–shell structured Si/C nanocomposites were prepared to adapt for the large volume change during a charge–discharge process.

Preparation and Electrochemical Performance of SnO2/Graphite/Carbon Nanotube Composite Anode for Lithium-Ion Batteries

2010 ◽  
Vol 150-151 ◽  
pp. 1387-1390
Author(s):  
Cheng Zhao Yang ◽  
Guo Qing Zhang ◽  
Lei Zhang ◽  
Li Ma
Keyword(s):  
Carbon Nanotube ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Pure Sno2 ◽  
Composite Anode ◽  
Carbon Nanotube Composite ◽  
Charge Discharge

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.

Enhanced fast charge–discharge performance of Li4Ti5O12 as anode materials for lithium-ion batteries by Ce and CeO2 modification using a facile method

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37367-37376 ◽  
Author(s):  
Ting-Feng Yi ◽  
Jin-Zhu Wu ◽  
Mei Li ◽  
Yan-Rong Zhu ◽  
Ying Xie ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Solid State Method ◽  
Discharge Performance ◽  
Fast Charge ◽  
Improved Performance ◽  
Charge Discharge

Ce and CeO2in situ modified Li4Ti5O12 with fast charge–discharge performance for lithium-ion batteries were prepared by a solid-state method. The improved performance are found to be due to the increased ionic and electronic conductivity.

Micelle templated NiO hollow nanospheres as anode materials in lithium ion batteries

2014 ◽  
Vol 2 (20) ◽  
pp. 7337-7344 ◽  
Author(s):  
Manickam Sasidharan ◽  
Nanda Gunawardhana ◽  
Chenrayan Senthil ◽  
Masaki Yoshio
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Rate Performance ◽  
Hollow Nanospheres ◽  
High Charge ◽  
Discharge Capacities ◽  
Charge Discharge

A hollow NiO nanosphere constructed electrode exhibits high charge–discharge capacities, cycling and rate performance in lithium ion rechargeable batteries.

Carbon nanofiber-supported B2O3–SnOx glasses as anode materials for high-performance lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89099-89104 ◽  
Author(s):  
Qian Li ◽  
Jin-Le Lan ◽  
Yuan Liu ◽  
Yunhua Yu ◽  
Xiaoping Yang
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Charge Discharge

The addition of boron effectively prohibits the aggregation of Sn nanoparticles during the charge–discharge cycles.

scholarly journals Porous Fe2O3 nanorod-decorated hollow carbon nanofibers for high-rate lithium storage

2021 ◽  
Author(s):  
Zhiwen Long ◽  
Luhan Yuan ◽  
Chu Shi ◽  
Caiqin Wu ◽  
Hui Qiao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Volume Expansion ◽  
Anode Materials ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Rate Performance ◽  
Current Densities ◽  
Hollow Carbon ◽  
Charge Discharge

AbstractTransition metal oxides (TMOs) are considered as promising anode materials for lithium-ion batteries in comparison with conventional graphite anode. However, TMO anodes suffer severe volume expansion during charge/discharge process. In this respect, a porous Fe2O3 nanorod-decorated hollow carbon nanofiber (HNF) anode is designed via a combined electrospinning and hydrothermal method followed by proper annealing. FeOOH/PAN was prepared as precursors and sacrificial templates, and porous hollow Fe2O3@carbon nanofiber (HNF-450) composite is formed at 450 °C in air. As anode materials for lithium-ion batteries, HNF-450 exhibits outstanding rate performance and cycling stability with a reversible discharge capacity of 1398 mAh g−1 after 100 cycles at a current density of 100 mA g−1. Specific capacities 1682, 1515, 1293, 987, and 687 mAh g−1 of HNF-450 are achieved at multiple current densities of 200, 300, 500, 1000, and 2000 mA g−1, respectively. When coupled with commercial LiCoO2 cathode, the full cell delivered an outstanding initial charge/discharge capacity of 614/437 mAh g−1 and stability at different current densities. The improved electrochemical performance is mainly attributed to the free space provided by the unique porous hollow structure, which effectively alleviates the volume expansion and facilitates the exposure of more active sites during the lithiation/delithiation process. Graphical abstract Porous Fe2O3 nanorod-decorated hollow carbon nanofibers exhibit outstanding rate performance and cycling stability with a high reversible discharge capacity.

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