scholarly journals Facile One-Step Dynamic Hydrothermal Synthesis of Spinel LiMn2O4/Carbon Nanotubes Composite as Cathode Material for Lithium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4123 ◽  
Author(s):  
Chaoqi Shen ◽  
Hui Xu ◽  
Liu Liu ◽  
Heshan Hu ◽  
Siyuan Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Performance ◽  
Retention Rate ◽  
Hydrothermal Process ◽  
Lithium Ion ◽  
Spinel Limn2o4 ◽  
Excellent Electrochemical Performance ◽  
Specific Discharge ◽  
One Step ◽  
Hydrothermal Approach

Nano-sized spinel LiMn2O4/carbon nanotubes (LMO/CNTs) composite is facilely synthesized via a one-step dynamic hydrothermal approach. The characterizations and electrochemical measurements reveal that LiMn2O4 particles with narrow size distribution are well dispersed with CNTs in the composite. The LMO/CNTs nanocomposite with 5 wt % CNTs displays a high specific discharge capacity of 114 mAh g−1 at 1C rate, and the retention rate after 180 cycles at room temperature reaches 94.5% in the potential window of 3.3 to 4.3 V vs. Li/Li+. Furthermore, the electrochemical performance of the composite with 5 wt % CNTs at elevated temperature (55 °C) is also impressive, 90% discharging capacity could be maintained after 100 cycles at 1C. Such excellent electrochemical performance of the final product is attributed to the content of CNTs added in the hydrothermal process and small particle size inherited from pretreated MnO2 precursor.

Facile preparation of MoS2/maleic acid composite as high-performance anode for lithium ion batteries

2020 ◽  
Vol 44 (37) ◽  
pp. 15887-15894
Author(s):  
Jingshi Wang ◽  
Zhigang Shen ◽  
Min Yi
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Composite Anode ◽  
Step Method ◽  
Practical Applications ◽  
Excellent Electrochemical Performance ◽  
One Step ◽  
Facile Preparation

We propose a facile one-step method to prepare a MoS2 composite anode with excellent electrochemical performance and potential for practical applications in lithium ion batteries.

Electrochemical Performance Ni Doped Spinel LiMn2O4 Cathode for Lithium Ion Batteries

2011 ◽  
Vol 347-353 ◽  
pp. 290-300
Author(s):  
Yong Li Cui ◽  
Wen Jing Bao ◽  
Zheng Yuan ◽  
Quan Chao Zhuang ◽  
Zhi Sun
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
Retention Rate ◽  
Sol Gel ◽  
Lithium Ion ◽  
Cyclic Voltammogram ◽  
X Ray Diffraction ◽  
Capacity Retention ◽  
Excellent Electrochemical Performance ◽  
Charge Discharge

LiNixMn2-xO4 (x=0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) compounds with spinel crystal structure are synthesized by sol-gel method. The dependence of the physicochemical properties of these compounds has been extensively investigated by using X-ray diffraction (XRD), scanning electron microscope (SEM), cyclic voltammogram (CV) and charge-discharge test. It is found that as Mn is replaced by Ni, the initial capacity decreases, but the capacity retention is enhanced. Of all the LiNixMn2-xO4 (x=0, 0.05, 0.1, 0.2, 0.3, 0.4) compounds, the LiNi0.2Mn1.8O4 has best electrochemical performance, about 120mAhg-1 discharge capacity, its capacity retention rate of 96.6% after 100 cycles. However the LiNi0.5Mn1.5O4 sample shows excellent electrochemical performance at 4.7 V high potential, 150 mAhg-1 discharge capacity, above 110 mAhg-1 of capacity retention after 42 cycles of charge/discharge. The prepared LiNi0.5Mn1.5O4 powders sintered at 750 °C here has Fd3m space group.

A simple and facile one-step strategy to synthesize orthorhombic LiMnO2 nano-particles with excellent electrochemical performance

2015 ◽  
Vol 41 (10) ◽  
pp. 15266-15271 ◽  
Author(s):  
Hongyuan Zhao ◽  
Bing Chen ◽  
Cai Cheng ◽  
Weiqiang Xiong ◽  
Zhenwei Wang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Nano Particles ◽  
Excellent Electrochemical Performance ◽  
One Step ◽  
Orthorhombic Limno2

Two-dimensional hybrid nanosheets of few layered MoSe2 on reduced graphene oxide as anodes for long-cycle-life lithium-ion batteries

2016 ◽  
Vol 4 (40) ◽  
pp. 15302-15308 ◽  
Author(s):  
Zhigao Luo ◽  
Jiang Zhou ◽  
Lirong Wang ◽  
Guozhao Fang ◽  
Anqiang Pan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Lithium Ion ◽  
Cycle Life ◽  
Two Dimensional ◽  
Long Cycle Life ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

We report the synthesis of a novel 2D hybrid nanosheet constructed by few layered MoSe2 grown on reduced graphene oxide (rGO), which exhibits excellent electrochemical performance as anodes for lithium ion batteries.

Electrochemical performance and electronic properties of shell LiNi0.5Mn1.5O4 hollow spheres for lithium ion battery

2016 ◽  
Vol 09 (02) ◽  
pp. 1650027 ◽  
Author(s):  
Yongli Cui ◽  
Jiali Wang ◽  
Mingzhen Wang ◽  
Quanchao Zhuang
Keyword(s):  
Activation Energy ◽  
Electrochemical Performance ◽  
Electronic Properties ◽  
Lithium Ion Battery ◽  
Retention Rate ◽  
Hollow Spheres ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Hollow Microspheres ◽  
Cycle Stability

Shell spinel LiNi[Formula: see text]Mn[Formula: see text]O4 hollow microspheres were successfully synthesized by MnCO3 template, and characterized by XRD, SEM, and TEM. The results show that the hollow LiNi[Formula: see text]Mn[Formula: see text]O4 cathode has good cycle stability to reach 124.5, 119.8, and 96.6[Formula: see text]mAh/g at 0.5, 1, and 5 C, the corresponding retention rate of 98.1%, 98.2%, and 98.0% after 50 cycles at 20[Formula: see text]C, and the reversible capacity of 94.6[Formula: see text]mAh/g can be obtained at 1 C rate at 55[Formula: see text]C, 83.3% retention after 100 cycles. As the temperature decreases from 10[Formula: see text]C to [Formula: see text]C, the resistance of [Formula: see text] increases from 5.5 [Formula: see text] to 135 [Formula: see text], [Formula: see text] from 27 [Formula: see text] to 353.2 [Formula: see text], and [Formula: see text] from 12.7 [Formula: see text] to 73.0 [Formula: see text]. Moreover, the B constant and [Formula: see text] activation energy are 4480[Formula: see text]K and 37.22[Formula: see text]KJ/mol for the NTC spinel material, respectively.

Cu2O Nanoparticles and Multi-Branched Nanowires as Anodes for Lithium-Ion Batteries

NANO ◽  
2018 ◽  
Vol 13 (09) ◽  
pp. 1850103 ◽  
Author(s):  
Xu Chen ◽  
Chunxin Yu ◽  
Xiaojiao Guo ◽  
Qinsong Bi ◽  
Muhammad Sajjad ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Hydrothermal Process ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Discharge Process ◽  
Electrochemical Cycling ◽  
One Step ◽  
Cu2o Nanoparticles ◽  
Enhanced Electrochemical Performance

Novelty Cu2O multi-branched nanowires and nanoparticles with size ranging from [Formula: see text]15[Formula: see text]nm to [Formula: see text]60[Formula: see text]nm have been synthesized by one-step hydrothermal process. These Cu2O nanostructures when used as anode materials for lithium-ion batteries exhibit the excellent electrochemical cycling stability and reduced polarization during the repeated charge/discharge process. The specific capacity of the Cu2O nanoparticles, multi-branched nanowires and microscale are maintained at 201.2[Formula: see text]mAh/g, 259.6[Formula: see text]mAh/g and 127.4[Formula: see text]mAh/g, respectively, under the current density of 0.1[Formula: see text]A/g after 50 cycles. The enhanced electrochemical performance of the Cu2O nanostructures compared with microscale counterpart can be attributed to the larger contact area between active Cu2O nanostructures/electrolyte interface, shorter diffusion length of Li[Formula: see text] within nanostructures and the improved stress release upon lithiation/delithiation.

Template-free formation of various V2O5 hierarchical structures as cathode materials for lithium-ion batteries

2017 ◽  
Vol 5 (14) ◽  
pp. 6522-6531 ◽  
Author(s):  
Yining Ma ◽  
Aibin Huang ◽  
Huaijuan Zhou ◽  
Shidong Ji ◽  
Shuming Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Hierarchical Structures ◽  
Lithium Ion ◽  
Excellent Electrochemical Performance ◽  
Template Free

Various V2O5 hierarchical structures were successfully synthesized via a template-free method and exhibited excellent electrochemical performance.

Sign in / Sign up

Export Citation Format

Share Document