scholarly journals Simple One-Pot Synthesis of Hexagonal ZnO Nanoplates as Anode Material for Lithium-Ion Batteries

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Haipeng Li ◽  
Yaqiong Wei ◽  
Yan Zhao ◽  
Yongguang Zhang ◽  
Fuxing Yin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Active Sites ◽  
Hydrothermal Reaction ◽  
Strain Relaxation ◽  
Lithium Ion ◽  
Lithium Ions ◽  
One Pot ◽  
Large Contact Area ◽  
Physical And Chemical ◽  
Microstructure Of The Material

Hexagonal ZnO nanoplates were synthesizedviasimple one-pot hydrothermal reaction of Zn(CH3COO)2and CO(NH2)2. XRD, SEM, and HRTEM were used to investigate the composition and microstructure of the material. Together with the facile strain relaxation during structure and volume change upon cycling, this plate-like structure of ZnO is favorable for physical and chemical interactions with lithium ions because of its large contact area with the electrolyte, providing more active sites and short diffusion distances. The resulting hexagonal ZnO nanoplates electrode exhibited good cyclability and delivered a reversible discharge capacity of 368 mAh g−1after 100 cycles at 0.1 C.

scholarly journals Functionalization Mechanism of Reduced Graphene Oxide Flakes with BF3·THF and Its Influence on Interaction with Li+ Ions in Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 679
Author(s):  
Łukasz Kaczmarek ◽  
Magdalena Balik ◽  
Tomasz Warga ◽  
Ilona Acznik ◽  
Katarzyna Lota ◽  
...  
Keyword(s):  
Specific Surface ◽  
Lithium Ion Batteries ◽  
Surface Area ◽  
Specific Surface Area ◽  
Active Sites ◽  
Hydrothermal Reaction ◽  
Layer Structure ◽  
Average Pore Size ◽  
Lithium Ion ◽  
Reduced Graphene

Doping of graphene and a controlled induction of disturbances in the graphene lattice allows the production of numerous active sites for lithium ions on the surface and edges of graphene nanolayers and improvement of the functionality of the material in lithium-ion batteries (LIBs). This work presents the process of introducing boron and fluorine atoms into the structure of the reduced graphene during hydrothermal reaction with boron fluoride tetrahydrofuran (BF3·THF). The described process is a simple, one-step synthesis with little to no side products. The synthesized materials showed an irregular, porous structure, with an average pore size of 3.44–3.61 nm (total pore volume (BJH)) and a multi-layer structure and a developed specific surface area at the level of 586–660 m2/g (analysis of specific surface Area (BET)). On the external surfaces, the occurrence of irregular particles with a size of 0.5 to 10 µm was observed, most probably the effect of doping the graphene structure and the formation of sp3 hybridization defects. The obtained materials show the ability to store electric charge due to the development of the specific surface area. Based on cyclic voltammetry, the tested material showed a capacity of 450–550 mAh/g (charged up to 2.5 V).

One-pot combustion synthesis of Li3VO4-Li4Ti5O12 nanocomposite as anode material of lithium-ion batteries with improved performance

2016 ◽  
Vol 222 ◽  
pp. 587-595 ◽  
Author(s):  
Yujing Sha ◽  
Zhaobao Zhang ◽  
Yubo Chen ◽  
Qian Lin ◽  
Yijun Zhong ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Combustion Synthesis ◽  
Anode Material ◽  
Lithium Ion ◽  
One Pot ◽  
Improved Performance

scholarly journals Aging Mechanisms of Electrode Materials in Lithium-Ion Batteries for Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Cheng Lin ◽  
Aihua Tang ◽  
Hao Mu ◽  
Wenwei Wang ◽  
Chun Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electrochemical Behaviour ◽  
Lithium Ion ◽  
Storage Conditions ◽  
Carbon Anode ◽  
Side Reactions ◽  
Metallic Oxide ◽  
Lithium Ions ◽  
Aging Mechanisms

Electrode material aging leads to a decrease in capacity and/or a rise in resistance of the whole cell and thus can dramatically affect the performance of lithium-ion batteries. Furthermore, the aging phenomena are extremely complicated to describe due to the coupling of various factors. In this review, we give an interpretation of capacity/power fading of electrode-oriented aging mechanisms under cycling and various storage conditions for metallic oxide-based cathodes and carbon-based anodes. For the cathode of lithium-ion batteries, the mechanical stress and strain resulting from the lithium ions insertion and extraction predominantly lead to structural disordering. Another important aging mechanism is the metal dissolution from the cathode and the subsequent deposition on the anode. For the anode, the main aging mechanisms are the loss of recyclable lithium ions caused by the formation and increasing growth of a solid electrolyte interphase (SEI) and the mechanical fatigue caused by the diffusion-induced stress on the carbon anode particles. Additionally, electrode aging largely depends on the electrochemical behaviour under cycling and storage conditions and results from both structural/morphological changes and side reactions aggravated by decomposition products and protic impurities in the electrolyte.

scholarly journals The influence of different Si : C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6660-6666 ◽  
Author(s):  
Jun Wang ◽  
Shengli Li ◽  
Yi Zhao ◽  
Juan Shi ◽  
Lili Lv ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Ions ◽  
High Specific Capacity ◽  
Silicon Carbon ◽  
Silicon Based

With a high specific capacity (4200 mA h g−1), silicon based materials have become the most promising anode materials in lithium-ions batteries.

Sign in / Sign up

Export Citation Format

Share Document