A Novel Structure and Cycle Performance of Co3O4-C prepared by Electro-codepositing as Negative Electrode for Lithium-ion Batteries

2019 ◽  
Vol 11 (29) ◽  
pp. 149-155
Author(s):  
Weiping Yu ◽  
Pengpeng Wang ◽  
Weiping Yu ◽  
Ning Zhang ◽  
Ning Zhang
Keyword(s):  
Lithium Ion Batteries ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Novel Structure

All-Solid-States Thin Film Lithium-Ion Micro-Battery with SnOX Films Doped with Cu as Negative Electrode

2014 ◽  
Vol 496-500 ◽  
pp. 38-41 ◽  
Author(s):  
Jie Lin ◽  
Chang Liu ◽  
Qi Liu ◽  
Hang Guo
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Lithium Ion Batteries ◽  
High Capacity ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Silicon Substrates ◽  
Oxide Thin Films ◽  
Solid States

For powering various micro/nanodevices and systems, it is necessary to develop a thin film micro-battery with high capacity and outstanding cycle performance. By using radio frequency (RF) magnetrons sputtering, tin oxide thin films used for thin film micro-batteries negative electrode were deposited on silicon substrates. Besides, doping metal impurity Cu was used to improve the performance of the films. The results showed that with the increasing of Cu-doping content, the phase of thin oxide thin films tended from crystalline to amorphous, the capacity of SnOx films increased, and the cycle performance improved. Lastly, LiCoO2/LiPON/SnOx and LiCoO2/LiPON/CuySnOx all-solid-states thin film lithium-ion batteries were prepared with MEMS techniques, and the tests gave the conclusions that with the copper doping in the negative electrode, the capacity of thin film lithium-ion batteries increased, and the batteries showed better circulation property.

scholarly journals Electrochemical study on nickel aluminum layered double hydroxides as high-performance electrode material for lithium-ion batteries based on sodium alginate binder

2021 ◽  
Author(s):  
Xinyue Li ◽  
Marco Fortunato ◽  
Anna Maria Cardinale ◽  
Angelina Sarapulova ◽  
Christian Njel ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Material ◽  
Photoelectron Spectroscopy ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Electrochemical Study ◽  
Ex Situ ◽  
Potential Range ◽  
X Ray ◽  
Storage Mechanism

AbstractNickel aluminum layered double hydroxide (NiAl LDH) with nitrate in its interlayer is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01–3.0 V and 0.4–3.0 V vs. Li+/Li) and of the binder on the performance of the material is investigated in 1 M LiPF6 in EC/DMC vs. Li. The NiAl LDH electrode based on sodium alginate (SA) binder shows a high initial discharge specific capacity of 2586 mAh g−1 at 0.05 A g−1 and good stability in the potential range of 0.01–3.0 V vs. Li+/Li, which is better than what obtained with a polyvinylidene difluoride (PVDF)-based electrode. The NiAl LDH electrode with SA binder shows, after 400 cycles at 0.5 A g−1, a cycling retention of 42.2% with a capacity of 697 mAh g−1 and at a high current density of 1.0 A g−1 shows a retention of 27.6% with a capacity of 388 mAh g−1 over 1400 cycles. In the same conditions, the PVDF-based electrode retains only 15.6% with a capacity of 182 mAh g−1 and 8.5% with a capacity of 121 mAh g−1, respectively. Ex situ X-ray photoelectron spectroscopy (XPS) and ex situ X-ray absorption spectroscopy (XAS) reveal a conversion reaction mechanism during Li+ insertion into the NiAl LDH material. X-ray diffraction (XRD) and XPS have been combined with the electrochemical study to understand the effect of different cutoff potentials on the Li-ion storage mechanism. Graphical abstract The as-prepared NiAl-NO3−-LDH with the rhombohedral R-3 m space group is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01–3.0 V and 0.4–3.0 V vs. Li+/Li) and of the binder on the material’s performance is investigated in 1 M LiPF6 in EC/DMC vs. Li. Ex situ X-ray photoelectron spectroscopy (XPS) and ex situ X-ray absorption spectroscopy (XAS) reveal a conversion reaction mechanism during Li+ insertion into the NiAl LDH material. X-ray diffraction (XRD) and XPS have been combined with the electrochemical study to understand the effect of different cutoff potentials on the Li-ion storage mechanism. This work highlights the possibility of the direct application of NiAl LDH materials as negative electrodes for LIBs.

scholarly journals In-situ synthesis of Fe2O3/rGO using different hydrothermal methods as anode materials for lithium-ion batteries

2020 ◽  
Vol 59 (1) ◽  
pp. 477-487 ◽  
Author(s):  
Zhuang Liu ◽  
Haiyang Fu ◽  
Bo Gao ◽  
Yixuan Wang ◽  
Kui Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oleic Acid ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Anode Materials ◽  
Lithium Ion ◽  
In Situ Synthesis ◽  
Cycle Performance ◽  
Reduced Graphene

AbstractThis paper studies in-situ synthesis of Fe2O3/reduced graphene oxide (rGO) anode materials by different hydrothermal process.Scanning Electron Microscopy (SEM) analysis has found that different processes can control the morphology of graphene and Fe2O3. The morphologies of Fe2O3 prepared by the hydrothermal in-situ and oleic acid-assisted hydrothermal in-situ methods are mainly composed of fine spheres, while PVP assists The thermal in-situ law presents porous ellipsoids. Graphene exhibits typical folds and small lumps. X-ray diffraction analysis (XRD) analysis results show that Fe2O3/reduced graphene oxide (rGO) is generated in different ways. Also, the material has good crystallinity, and the crystal form of the iron oxide has not been changed after adding GO. It has been reduced, and a characteristic peak appears around 25°, indicating that a large amount of reduced graphene exists. The results of the electrochemical performance tests have found that the active materials prepared in different processes have different effects on the cycle performance of lithium ion batteries. By comprehensive comparison for these three processes, the electro-chemical performance of the Fe2O3/rGO prepared by the oleic acid-assisted hydrothermal method is best.

A simple synthesis of nanostructured Cu-incorporated SnO2 phases with improved cycle performance for lithium ion batteries

2013 ◽  
Vol 36 ◽  
pp. 33-37 ◽  
Author(s):  
Hany El-Shinawi ◽  
Matthias Böhm ◽  
Thomas Leichtweiß ◽  
Klaus Peppler ◽  
Jürgen Janek
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Simple Synthesis ◽  
Cycle Performance

Negative Electrode Comprised of Nanostructured CuO for Advanced Lithium Ion Batteries

2017 ◽  
Vol 28 (3) ◽  
pp. 1595-1604 ◽  
Author(s):  
Manab Kundu ◽  
Gopalu Karunakaran ◽  
Evgeny Kolesnikov ◽  
Mikhail V. Gorshenkov ◽  
Denis Kuznetsov
Keyword(s):  
Lithium Ion Batteries ◽  
Negative Electrode ◽  
Lithium Ion
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