Single Crystalline V2O5 Nanowire/Graphene Composite as Cathode Material for Lithium-Ion Batteries

2013 ◽  
Vol 873 ◽  
pp. 575-580 ◽  
Author(s):  
Qing He ◽  
Dong Lin Zhao ◽  
Yang Yang Zhu ◽  
Jing Xing Zhang
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Graphene Nanosheets ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycle Performance ◽  
Single Crystalline ◽  
Electrochemical Testing ◽  
Transmission Electron

The single crystalline V2O5nanowire/graphene nanosheets (GNS) composite has been successfully prepared via an easy and facile one-step hydrothermal synthesis method. The morphology, structure and electrochemical performance of V2O5nanowire/GNS composite as cathode material for lithium-ion batteries were systematically investigated by transmission electron microscope, X-ray diffraction and a variety of electrochemical testing techniques. The V2O5single crystalline nanowires were supported on the GNS substrate and exhibited excellent electrochemical properties. When used as a cathode material of lithium-ion batteries, the composite material revealed high initial discharge capacities and exceptional rate capacities. It was found that V2O5nanowire/GNS composite exhibited a relatively high reversible capacity of 357 mA h g-1and fine cycle performance.

TixSn1-xO3 Solid Solution Nanoparticles as Anode Material for Lithium-Ion Batteries

2013 ◽  
Vol 873 ◽  
pp. 587-591
Author(s):  
Jing Xing Zhang ◽  
Dong Lin Zhao ◽  
Yang Yang Zhu ◽  
Qing He
Keyword(s):  
Solid Solution ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Hydrothermal Process ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycle Performance ◽  
Electrochemical Testing ◽  
Transmission Electron

TixSn1-xO3solid solution nanoparticles have been successfully prepared via a hydrothermal process. The morphology and structure of TiO2, SnO2and TixSn1-xO3solid solution nanoparticles were investigated by scanning electron microscopy, transmission electron microscope and X-ray diffraction measurements. The electrochemical performance of TiO2, SnO2and TixSn1-xO3solid solution nanoparticles as anode material for lithium-ion batteries were systematically investigated by a variety of electrochemical testing techniques. The TixSn1-xO3solid solution nanoparticles showed not only higher specific capacity of 401.3 mA h·g1after 50 cycles but also better cycle performance, superior than the pure SnO2electrode, which can be ascribed to the stable cyclability of TiO2and the high reversible capacity of nanosized SnO2.

A high-performance Ce and Sn co-doped cathode material with enhanced cycle performance and suppressed voltage decay for lithium ion batteries

2019 ◽  
Vol 45 (16) ◽  
pp. 20780-20787 ◽  
Author(s):  
Yanying Liu ◽  
Ranran Li ◽  
Jianling Li ◽  
Zhe Yang ◽  
Jianjian Zhong ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Voltage Decay ◽  
Co Doped

Preparation and Characterization of High-Voltage Cathode Material LiNi0.5Mn1.5O4 for Lithium Ion Batteries

2019 ◽  
Vol 953 ◽  
pp. 121-126
Author(s):  
Zhe Chen ◽  
Quan Fang Chen ◽  
Sha Ne Zhang ◽  
Guo Dong Xu ◽  
Mao You Lin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Synthesis Method ◽  
Rate Capability ◽  
Lithium Ion ◽  
Diffusion Path ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

High energy density and rechargeable lithium ion batteries are attracting widely interest in renewable energy fields. The preparation of the high performance materials for electrodes has been regarded as the most challenging and innovative aspect. By utilizing a facile combustion synthesis method, pure nanostructure LiNi0.5Mn1.5O4 cathode material for lithium ion batteries were successfully fabricated. The crystal phase of the samples were characterized by X-Ray Diffraction, and micro-morphology as well as electrochemistry properties were also evaluated using FE-SEM, electrochemical charge-discharge test. The result shows the fabricated LiNi0.5Mn1.5O4 cathode materials had outstanding crystallinity and near-spherical morphologies. That obtained LiNi0.5Mn1.5O4 samples delivered an initial discharge capacity of 137.2 mAhg-1 at the 0.1 C together with excellent cycling stability and rate capability as positive electrodes in a lithium cell. The superior electrochemical performance of the as-prepared samples are owing to nanostructure particles possessing the shorter diffusion path for Li+ transport, and the nanostructure lead to large contact area to effectively improve the charge/discharge properties and the rate property. It is demonstrated that the as-prepared nanostructure LiNi0.5Mn1.5O4 samples have potential as cathode materials of lithium-ion battery for future new energy vehicles.

VCuxOy Thin Film by Magnetron Sputtering as Cathode Material for Thin Film Lithium-Ion Microbatteries

2015 ◽  
Vol 645-646 ◽  
pp. 1145-1149
Author(s):  
Jie Lin ◽  
Jian Lai Guo ◽  
Chang Liu ◽  
Hang Guo
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Electrochemical Tests ◽  
Effect Of Doping

A Cu doped V2O5film for lithium-ion batteries is prepared by magnetron sputtered using a vanadium target. Coppers are doped in varying proportions to investigate the effect of doping on the electrochemical properties. In comparison, the surface of doped samples is smooth and uniform. And the results of electrochemical tests indicate that the proper doped films (V: Cu=8: 1 by area) exhibit better cycle performance, wider voltage plateaus and higher capacity than other samples.

Effects of Morphological Collapse of Sphere Secondary Particles on Electrochemical Properties of a LiNi0.83Co0.11Mn0.06O2 Cathode Material for Lithium-Ion Batteries

2020 ◽  
Vol 12 (9) ◽  
pp. 1278-1282
Author(s):  
Jun-Seok Park ◽  
Un-Gi Han ◽  
Gyu-Bong Cho ◽  
Hyo-Jun Ahn ◽  
Ki-Won Kim ◽  
...  
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Solid Phase ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Phase Method ◽  
Electrochemical Characteristics ◽  
Secondary Particles ◽  
Tap Density

Li[NixCoyMnz]O2 (LiNCM) is one of the candidate cathode material that can replace the currently commercialized LiCoO2 (LCO) cathode material for lithium-ion batteries (LiBs). The morphological feature having primary particle and secondary sphere particle could affect structural stability, tap density and electrochemical performance of LiNCM. In this work, two LiNCM particles without or with the morphological collapse of the secondary particles were prepared by using a co-precipitation-assisted, solid-phase method and ball milling, and its morphological, structural and electrochemical characteristics were evaluated. The results of XRD, and FESEM demonstrated that the as-prepared two LiNCMs have a typical α-NaFeO2 layered structure and the two morphological features of secondary particles needed in this study. The results of electrochemical properties indicated that the LiNCM electrode without collapsed secondary particles have a good stability in cycle performance compared to that with collapse of secondary particles at 0.5, 1.0 and 2 C-rate. The capacity retention of without and with collapsed NCM was 55.8% and 27.3% after 200 cycles at 1 C-rate, respectively.

Facile synthesis of CuO nanoparticles as anode for lithium ion batteries with enhanced performance

2014 ◽  
Vol 07 (06) ◽  
pp. 1440008 ◽  
Author(s):  
Linlin Wang ◽  
Kaibin Tang ◽  
Min Zhang ◽  
Xiaozhu Zhang ◽  
Jingli Xu
Keyword(s):  
Lithium Ion Batteries ◽  
Large Scale ◽  
Low Cost ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cuo Nanoparticles ◽  
Cycle Performance ◽  
Scale Production ◽  
Large Scale Production ◽  
Average Size

Particle size effects on the electrochemical performance of the CuO particles toward lithium are essential. In this work, a low-cost, large-scale production but simple approach has been developed to fabricate CuO nanoparticles with an average size in ~ 130 nm through thermolysis of Cu ( OH )2 precursors. As anode materials for lithium ion batteries (LIBs), the CuO nanoparticles deliver a high reversible capacity of 540 mAh g-1 over 100 cycles at 0.5 C. It also exhibits a rate capacity of 405 mAh g-1 at 2 C. These results suggest that the facile synthetic method of producing the CuO nanoparticles can enhance cycle performance, superior to that of some different sizes of the CuO nanoparticles and many reported CuO -based anodes.

Al-doped LiMn2O4 single crystalline nanorods with enhanced elevated-temperature electrochemical performance via a template-engaged method as a cathode material for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 6372-6377 ◽  
Author(s):  
Dan Zhan ◽  
Ying Liang ◽  
Ping Cui ◽  
Zuoan Xiao
Keyword(s):  
Elevated Temperature ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Spinel Structure ◽  
Lithium Ion ◽  
Capacity Retention ◽  
Single Crystalline ◽  
Retention Ratio

Highly crystalline Al-doped LiMn2O4 nanorods shows capacity retention ratio of 70% with 3 C current rate at 50 °C, maintaining the spinel structure and the nanorod morphology with highly crystallinity after 500 discharge/charge cycles.

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