scholarly journals Study on the Rate Performance of LiCo1/3Ni1/3Mn1/3O2

2010 ◽  
Vol 158 ◽  
pp. 256-261 ◽  
Author(s):  
Dong Yun Zhang ◽  
Juan Yi ◽  
Qun Wei ◽  
Kun Liu ◽  
Zhen Zhen Fan ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Raw Materials ◽  
Lithium Ion ◽  
Lithium Hydroxide ◽  
High Rate ◽  
Rate Performance ◽  
Ac Impedance Spectroscopy ◽  
Nickel Manganese ◽  
Charge Discharge ◽  
Chemical Coprecipitation Method

Ternary lithium-ion battery is currently one of the hot cathode materials. In this paper, with acetate of nickel, manganese and cobalt as raw materials and lithium hydroxide as precipitation agent, LiCo1/3Mn1/3Ni1/3O2 was prepared by chemical coprecipitation method. LAND charge-discharge testing was used to study the electrochemical performance of materials at different rates (0.5C, 1C, 2C), and AC impedance spectroscopy was employed to study the rate performance and reasons of cyclical stability. The results showed that the stable SEM film formed under high rate was the main reason for the increased rate.

The Effect of Crystalline Microstructure of PVDF Binder on Mechanical and Electrochemical Performance of Lithium-Ion Batteries Cathode

2020 ◽  
Vol 234 (3) ◽  
pp. 381-397
Author(s):  
Mohammad Mohsen Loghavi ◽  
Saeed Bahadorikhalili ◽  
Najme Lari ◽  
Mohammad Hadi Moghim ◽  
Mohsen Babaiee ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Electrochemical Performance ◽  
Polyvinylidene Fluoride ◽  
Mechanical Stability ◽  
Lithium Ion ◽  
Ac Impedance ◽  
Ac Impedance Spectroscopy ◽  
Transfer Resistance ◽  
Crystalline Phases ◽  
Charge Discharge

AbstractIn this paper, the effect of the crystalline microstructures of polyvinylidene fluoride (PVDF), as cathode binder, on mechanical and electrochemical properties of the cathode, and on the cell performance is investigated. The crystalline phases of the PVDF films prepared at different temperatures are determined by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) and also mechanical strength of PVDF films evaluated by a tensile test. The cathodes were prepared at altered temperatures to achieve different PVDF phases. The effect of various crystalline phases on the cathode performance was studied. The obtained cathodes were analyzed by scanning electron microscope (SEM), contact angle measurement, and adhesion test. The electrochemical performance of the cathodes was evaluated by charge-discharge cycling test and AC impedance spectroscopy. Mechanical tests results showed that the cathode which is prepared at 60 °C has the best adhesion and mechanical stability. In addition, the charge-discharge cycling studies showed that this cathode has the highest capacity efficiency. AC impedance spectroscopy illustrated that this electrode has the lowest charge transfer resistance and SEI resistance.

scholarly journals Polyimide-Derived Carbon-Coated Li4Ti5O12 as High-Rate Anode Materials for Lithium Ion Batteries

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1672
Author(s):  
Shih-Chieh Hsu ◽  
Tzu-Ten Huang ◽  
Yen-Ju Wu ◽  
Cheng-Zhang Lu ◽  
Huei Chu Weng ◽  
...  
Keyword(s):  
Carbon Source ◽  
Electrochemical Performance ◽  
Anode Materials ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Molecular Arrangement ◽  
Thermal Imidization ◽  
Carbon Coated ◽  
Graphite Structure

Carbon-coated Li4Ti5O12 (LTO) has been prepared using polyimide (PI) as a carbon source via the thermal imidization of polyamic acid (PAA) followed by a carbonization process. In this study, the PI with different structures based on pyromellitic dianhydride (PMDA), 4,4′-oxydianiline (ODA), and p-phenylenediamine (p-PDA) moieties have been synthesized. The effect of the PI structure on the electrochemical performance of the carbon-coated LTO has been investigated. The results indicate that the molecular arrangement of PI can be improved when the rigid p-PDA units are introduced into the PI backbone. The carbons derived from the p-PDA-based PI show a more regular graphite structure with fewer defects and higher conductivity. As a result, the carbon-coated LTO exhibits a better rate performance with a discharge capacity of 137.5 mAh/g at 20 C, which is almost 1.5 times larger than that of bare LTO (94.4 mAh/g).

Synthesis of hierarchical ZnO/ZnCo2O4 nanosheets with mesostructures for lithium-ion anodes

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43551-43555 ◽  
Author(s):  
Mengmeng Zhen ◽  
Xiao Zhang ◽  
Lu Liu
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Novel bi-component-active hierarchical ZnO/ZnCo2O4 nanosheets with mesostructures presented a good high-rate performance for lithium ion batteries.

MOF-templated thermolysis for porous CuO/Cu2O@CeO2 anode material of lithium-ion batteries with high rate performance

2017 ◽  
Vol 52 (12) ◽  
pp. 7140-7148 ◽  
Author(s):  
Lijuan Wang ◽  
Xiaojie Wang ◽  
Zhaohui Meng ◽  
Hongjiang Hou ◽  
Baokuan Chen
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Facile formation of a nanostructured NiP2@C material for advanced lithium-ion battery anode using adsorption property of metal–organic framework

2016 ◽  
Vol 4 (24) ◽  
pp. 9593-9599 ◽  
Author(s):  
Gaihua Li ◽  
Hao Yang ◽  
Fengcai Li ◽  
Jia Du ◽  
Wei Shi ◽  
...  
Keyword(s):  
Adsorption Property ◽  
Metal Organic Framework ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Lithium Storage ◽  
Metal Organic ◽  
High Rate Performance ◽  
Battery Anode

Utilizing the adsorption properties of MOFs, a nanostructured NiP2@C was successfully synthesized, which exhibited enhanced capability for lithium storage in terms of both the reversible specific capacity and high-rate performance.

Preparation of hierarchical MoO2@RGO composite and its application for high rate performance lithium-ion batteries

2018 ◽  
Vol 212 ◽  
pp. 198-201 ◽  
Author(s):  
Xiaochuan Chen ◽  
Renpin Liu ◽  
Lingxing Zeng ◽  
Xiaoxia Huang ◽  
Yixing Fang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Enhanced high rate performance of Li[Li0.17Ni0.2Co0.05Mn0.58−xAlx]O2−0.5x cathode material for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49651-49656 ◽  
Author(s):  
Y. L. Wang ◽  
X. Huang ◽  
F. Li ◽  
J. S. Cao ◽  
S. H. Ye
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Pristine LNCM and LNCMA as Li-rich cathode materials for lithium ion batteries were synthesized via a sol–gel route. The Al-substituted LNCM sample exhibits an enhanced high rate performance and superior cyclability.

High-rate performance of LiNi0.5Mn1.45Al0.05O4 cathode material for lithium-ion batteries

Ionics ◽  
2021 ◽  
Author(s):  
Li Wang ◽  
Li Sheng ◽  
Jin Wang ◽  
Hong Xu ◽  
Guangyu Tian ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance
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