scholarly journals Carbyne Polysulfide as a Novel Cathode Material for Rechargeable Magnesium Batteries

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Yanna NuLi ◽  
Qiang Chen ◽  
Weikun Wang ◽  
Ying Wang ◽  
Jun Yang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Elemental Sulfur ◽  
Capacity Retention ◽  
Promising Candidate ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries ◽  
Hybrid Carbon

We report the formation of carbyne polysulfide by coheating carbon containing carbyne moieties and elemental sulfur. The product is proved to have a sp2hybrid carbon skeleton with polysulfide attached on it. The electrochemical performance of carbyne polysulfide as a novel cathode material for rechargeable magnesium batteries is firstly investigated. The material exhibits a high discharge capacity of 327.7 mAh g−1at 3.9 mA g−1. These studies show that carbyne polysulfide is a promising candidate as cathode material for rechargeable Mg batteries if the capacity retention can be significantly improved.

scholarly journals MgFeSiO4 as a potential cathode material for magnesium batteries: ion diffusion rates and voltage trends

2017 ◽  
Vol 5 (25) ◽  
pp. 13161-13167 ◽  
Author(s):  
Jennifer Heath ◽  
Hungru Chen ◽  
M. Saiful Islam
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Diffusion Rates ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries

Developing rechargeable magnesium batteries has become an area of growing interest as an alternative to lithium-ion batteries largely due to their potential to offer increased energy density from the divalent charge of the Mg ion.

scholarly journals MgFeSiO4 prepared via a molten salt method as a new cathode material for rechargeable magnesium batteries

2011 ◽  
Vol 56 (4-5) ◽  
pp. 386-390 ◽  
Author(s):  
Yun Li ◽  
YanNa Nuli ◽  
Jun Yang ◽  
Tuhudahong Yilinuer ◽  
JiuLin Wang
Keyword(s):  
Cathode Material ◽  
Molten Salt ◽  
Molten Salt Method ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries

scholarly journals Improved electrochemical performance of SiO2-coated Li-rich layered oxides-Li1.2Ni0.13Mn0.54Co0.13O2

2020 ◽  
Vol 31 (21) ◽  
pp. 19475-19486
Author(s):  
Jeffin James Abraham ◽  
Umair Nisar ◽  
Haya Monawwar ◽  
Aisha Abdul Quddus ◽  
R. A. Shakoor ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Sol Gel ◽  
Rate Capability ◽  
Lithium Ion ◽  
Side Reactions ◽  
Operating Voltage ◽  
Layered Oxides ◽  
Capacity Retention ◽  
Xps Characterization

AbstractLithium-rich layered oxides (LLOs) such as Li1.2Ni0.13Mn0.54Co0.13O2 are suitable cathode materials for future lithium-ion batteries (LIBs). Despite some salient advantages, like low cost, ease of fabrication, high capacity, and higher operating voltage, these materials suffer from low cyclic stability and poor capacity retention. Several different techniques have been proposed to address the limitations associated with LLOs. Herein, we report the surface modification of Li1.2Ni0.13Mn0.54Co0.13O2 by utilizing cheap and readily available silica (SiO2) to improve its electrochemical performance. Towards this direction, Li1.2Ni0.13Mn0.54Co0.13O2 was synthesized utilizing a sol–gel process and coated with SiO2 (SiO2 = 1.0 wt%, 1.5 wt%, and 2.0 wt%) employing dry ball milling technique. XRD, SEM, TEM, elemental mapping and XPS characterization techniques confirm the formation of phase pure materials and presence of SiO2 coating layer on the surface of Li1.2Ni0.13Mn0.54Co0.13O2 particles. The electrochemical measurements indicate that the SiO2-coated Li1.2Ni0.13Mn0.54Co0.13O2 materials show improved electrochemical performance in terms of capacity retention and cyclability when compared to the uncoated material. This improvement in electrochemical performance can be related to the prevention of electrolyte decomposition when in direct contact with the surface of charged Li1.2Ni0.13Mn0.54Co0.13O2 cathode material. The SiO2 coating thus prevents the unwanted side reactions between cathode material and the electrolyte. 1.0 wt% SiO2-coated Li1.2Ni0.13Mn0.54Co0.13O2shows the best electrochemical performance in terms of rate capability and capacity retention.

Magnesium Anthracene System-Based Electrolyte as a Promoter of High Electrochemical Performance Rechargeable Magnesium Batteries

2018 ◽  
Vol 10 (6) ◽  
pp. 5527-5533 ◽  
Author(s):  
Seydou Hebié ◽  
Fannie Alloin ◽  
Cristina Iojoiu ◽  
Romain Berthelot ◽  
Jean-Claude Leprêtre
Keyword(s):  
Electrochemical Performance ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries

Encapsulating sulfur into highly graphitized hollow carbon spheres as high performance cathode for lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98035-98041 ◽  
Author(s):  
Shuangke Liu ◽  
Xiaobin Hong ◽  
Yujie Li ◽  
Jing Xu ◽  
Chunman Zheng ◽  
...  
Keyword(s):  
High Performance ◽  
High Capacity ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Encapsulating sulfur into a highly graphitized hollow carbon sphere (GHCS) is proposed as sulfur cathode, the S@GHCS delivers a high discharge capacity of ∼800 mA h g−1at 4C rate and high capacity retention of 93.7% after 240 cycles.

Characteristic of novel composition Nax[Ni0.6Co0.2Mn0.2]O2 as Cathode Materials for So-dium Ion-Batteries

2017 ◽  
Vol 20 (1) ◽  
pp. 021-024 ◽  
Author(s):  
Byeong-Chan Jang ◽  
Ji-Woong Shin ◽  
Jin-Joo Bae ◽  
Jong-Tae Son
Keyword(s):  
Cathode Material ◽  
Calcination Temperature ◽  
Cathode Materials ◽  
Cycling Performance ◽  
Sodium Content ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Layered Cathode Materials ◽  
Co Precipitation

In this work, novel composition of Nax[Ni0.6Co0.2Mn0.2]O2 (x = 0.5 and 1.0) layered cathode materials were synthesized by using hydroxide co-precipitation and calcined at 850, 900 and 950 °C. We studied the effects of different sodium contents and calcination temperature on the structural and electrochemical properties of this novel cathode material. The change of calcination temperature and sodium content led to different P2-type, P2/P3-type, P2/O3-type, or O3-type structures. The results indicate better electrochemical perfor-mance of the P2-type cathode materials in terms of high discharge capacity and good cycling performance, when compared to P2/P3, P2/O3, and O3-type cathode materials. Na0.5[Ni0.6Co0.2Mn0.2]O2 electrode calcined at 900 °C exhibited a good capacity of 107.15 mAhg-1 and ca-pacity retention over 73 % after 20 cycle. Characterization of this material will help to develop cathode materials for the Na-ion battery cathode.

Surface Treatment of the Lithium Boron Oxide Coated LiMn2O4 Cathode Material in Li-Ion Battery

2007 ◽  
Vol 280-283 ◽  
pp. 671-676 ◽  
Author(s):  
Hong Wei Chan ◽  
Jenq Gong Duh ◽  
Shyang Roeng Sheen
Keyword(s):  
Particle Size ◽  
Cathode Material ◽  
Discharge Capacity ◽  
Average Particle Size ◽  
Lithium Ion ◽  
Cyclic Test ◽  
Average Particle ◽  
Laser Scattering ◽  
High Discharge ◽  
High Discharge Capacity

Surface modification on the electrode has a vital impact on lithium-ion batteries, and it is essential to probe the mechanism of the modified film on the surface of the electrode. In this study, a Li2O-2B2O3 film was coated on the surface of the cathode material by solution method. The cathode powders derived from co-precipitation method were calcined with various weight percent of the surface modified glass to form fine powder of single spinel phase with different particle size, size distribution and morphology. The thermogravimetry/differential thermal analysis was used to evaluate the appropriate heat treatment temperature. The structure was confirmed by the X-ray diffractometer along with the composition measured by the electron probe microanalyzer. From the field emission scanning electron microscope image and Laser Scattering measurements, the average particle size was in the range of 7-8µm. The electrochemical behavior of the cathode powder was examined by using two-electrode test cells consisted of a cathode, metallic lithium anode, and an electrolyte of 1M LiPF6. Cyclic charge/discharge testing of the coin cells, fabricated by both coated and un-coated cathode material, provided high discharge capacity. Furthermore, the coated cathode powder showed better cyclability than the un-coated one after the cyclic test. The introduction of the glass-coated cathode material revealed high discharge capacity and appreciably decreased the decay rate after cyclic test.

Solvothermal synthesis of GO/V2O5 composites as a cathode material for rechargeable magnesium batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76352-76355 ◽  
Author(s):  
Xinchuan Du ◽  
Gang Huang ◽  
Yuling Qin ◽  
Limin Wang
Keyword(s):  
Cathode Material ◽  
Solvothermal Synthesis ◽  
Solvothermal Reaction ◽  
Electrochemical Performances ◽  
Magnesium Batteries ◽  
Rechargeable Magnesium Batteries

GO/V2O5 composites prepared from a solvothermal reaction exhibited greatly enhanced electrochemical performances as a cathode material for rechargeable magnesium batteries.

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