scholarly journals TEM observation for low-temperature grown spinel-type LiMn2O4crystals

2014 ◽  
Vol 70 (a1) ◽  
pp. C749-C749
Author(s):  
Kunio Yubuta ◽  
Yusuke Mizuno ◽  
Nobuyuki Zettsu ◽  
Shigeki Komine ◽  
Kenichiro Kami ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxides ◽  
Low Cost ◽  
Active Material ◽  
Lithium Ion ◽  
Growth Conditions ◽  
Rechargeable Batteries ◽  
Chemical Compositions ◽  
Spinel Type ◽  
Average Size

Present spinel-type lithium manganese oxides have attracted much attention as positive-electrode active materials for lithium-ion rechargeable batteries, which are the most sought-after power source for various electric applications, because of their low cost, non-toxicity, and high abundance of source materials compared to the conventionally used LiCoO2 crystals. Spinel-type LiMn2O4 crystals were grown at low-temperature by using a LiCl-KCl flux. The chemical compositions, sizes, and shapes of the LiMn2O4 crystals could be tuned by simply changing the growth conditions. Among the various products, the crystals grown at a low temperature of 873 K showed a small average size of 200 nm. Electron diffraction patterns and TEM images reveal the truncated octahedral shape of the crystals. The flux growth driven by rapid cooling resulted in truncated octahedral LiMn2O4 crystals surrounded by both dominating {111} and minor {100} faces with {311} and {220} edges. Lattice images indicate that crystals grown at a lower temperature have the excellent crystallinity. The small LiMn2O4 crystals grown at 873 K showed better rate properties than the large crystals grown at 1173 K, when used as a positive active material in lithium-ion rechargeable batteries.

scholarly journals Sodium Induced Morphological Changes of Carbon Coated TiO2 Anatase Nanoparticles – High-Performance Materials for Na-Ion Batteries

MRS Advances ◽  
2020 ◽  
Vol 5 (43) ◽  
pp. 2221-2229
Author(s):  
G. Greco ◽  
S. Passerini
Keyword(s):  
Large Scale ◽  
Morphological Changes ◽  
Low Cost ◽  
Cell Structure ◽  
Active Material ◽  
Lithium Ion ◽  
Composite Electrodes ◽  
Carbon Coated ◽  
Anatase Nanoparticles ◽  
First Time

AbstractThe most promising candidate as an everyday alternative to lithium-ion batteries (LIBs) are sodium-ion batteries (NIBs). This is not only due to Na abundance, but also because the main principles and cell structure are very similar to LIBs. Due to these benefits, NIBs are expected to be used in applications related to large-scale energy storage systems and other applications not requiring top-performance in terms of volumetric capacity. One important issue that has hindered the large scale application of NIBs is the anode material. Graphite and silicon, which have been widely applied as anodes in NIBs, do not show great performance. Hard carbons look very promising in terms of their abundance and low cost, but they tend to suffer from instability, in particular over the long term. In this work we explore a carbon-coated TiO2 nanoparticle system that looks very promising in terms of stability, abundance, low-cost, and most importantly that safety of the cell, since it does not suffer from potential sodium plating during cycling. Maintaining a nano-size and consistent morphology of the active material is a crucial parameter for maintaining a well-functioning cell upon cycling. In this work we applied Anomalous Small Angle X-Ray Scattering (ASAXS) for the first time at the Ti K-edge of TiO2 anatase nanoparticles on different cycled composite electrodes in order to have a complete morphological overview of the modifications induced by sodiation and desodiation. This work also demonstrates for the first time that the nanosize of the TiO2 is maintained upon cycling, which is in agreement with the electrochemical stability.

A review on synthesis and engineering of crystal precursors produced via coprecipitation for multicomponent lithium-ion battery cathode materials

CrystEngComm ◽  
2020 ◽  
Vol 22 (9) ◽  
pp. 1514-1530 ◽  
Author(s):  
Hongxu Dong ◽  
Gary M. Koenig
Keyword(s):  
Lithium Ion Battery ◽  
Cathode Materials ◽  
High Performance ◽  
Active Material ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Materials Synthesis ◽  
Precise Control

Interest in developing high performance lithium-ion rechargeable batteries has motivated research in precise control over the composition, phase, and morphology during materials synthesis of battery active material particles.

Synthesis and Application of Manganese Oxide Based Nanomaterials

2013 ◽  
Vol 830 ◽  
pp. 33-36
Author(s):  
Su Jun Li
Keyword(s):  
Water Treatment ◽  
Manganese Oxide ◽  
Anode Materials ◽  
Manganese Oxides ◽  
Low Cost ◽  
Lithium Ion ◽  
Inorganic Materials ◽  
Structural Flexibility ◽  
Electrochemical Supercapacitors ◽  
High Theoretical Capacity

Manganese oxide is one of the most attractive inorganic materials because of its structural flexibility and wide applications in catalysis, ion exchange, electrochemical supercapacitors, molecular adsorption, biosensors, and so on. In recently, manganese oxides nanomaterials, including MnO, MnO2and Mn3O4, have attracted great interest as anode materials in lithium-ion batteries and water treatment due to their high theoretical capacity, environmental benignity, low cost, and special properties. Hence, manganese oxides nanostructures with excellent properties and various morphologies have been successfully synthesized. Herein, we provide a recent development of the synthesis of manganese oxides nanomaterials and their application.

New low temperature electrolytes with thermal runaway inhibition for lithium-ion rechargeable batteries

2006 ◽  
Vol 162 (1) ◽  
pp. 690-695 ◽  
Author(s):  
Braja K. Mandal ◽  
Akshaya K. Padhi ◽  
Zhong Shi ◽  
Sudipto Chakraborty ◽  
Robert Filler
Keyword(s):  
Low Temperature ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Thermal Runaway

scholarly journals A Review on the Synthesis of Manganese Oxide Nanomaterials and Their Applications on Lithium-Ion Batteries

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaodi Liu ◽  
Changzhong Chen ◽  
Yiyang Zhao ◽  
Bin Jia
Keyword(s):  
Manganese Oxide ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Manganese Oxides ◽  
Low Cost ◽  
Lithium Ion ◽  
High Theoretical Capacity

Most recently, manganese oxides nanomaterials, including MnO and MnO2, have attracted great interest as anode materials in lithium-ion batteries (LIBs) for their high theoretical capacity, environmental benignity, low cost, and special properties. Up to now, manganese oxides nanostructures with excellent properties and various morphologies have been successfully synthesized. Herein, we provide an in-depth discussion of recent development of the synthesis of manganese oxides nanomaterials and their application in the field of LIBs.

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.

scholarly journals Amorphous LiCoO2-based Positive Electrode Active Materials with Good Formability for All-Solid-State Rechargeable Batteries

MRS Advances ◽  
2018 ◽  
Vol 3 (23) ◽  
pp. 1319-1327 ◽  
Author(s):  
Kenji Nagao ◽  
Yuka Nagata ◽  
Atsushi Sakuda ◽  
Akitoshi Hayashi ◽  
Masahiro Tatsumisago
Keyword(s):  
Solid State ◽  
Electrode Materials ◽  
Active Material ◽  
Ionic Conductivities ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Positive Electrode ◽  
Active Materials ◽  
Ceramic Electrolyte ◽  
Xrd Patterns

ABSTRACTAmorphous LiCoO2-based positive electrode materials are synthesized by a mechanical milling technique. As a lithium oxy-acid, Li2SO4, Li3PO4, Li3BO3, Li2CO3, and LiNO3 are selected and milled with LiCoO2. XRD patterns indicate that reaction between LiCoO2 and these lithium oxy-acids proceeds. Amorphization mainly occurs, and several broad peaks attributable to cubic LiCoO2 are observed in all the samples. These amorphous active materials show mixed conductivities of electron and lithium ion. All-solid-state cells using the prepared amorphous active materials and the Li2.9B0.9S0.1O3.1 glass-ceramic electrolyte are fabricated and their charge-discharge properties are examined. The cells with only the 80LiCoO2·20Li2SO4 (mol%) and the 80LiCoO2·20Li3PO4 active materials function as secondary batteries. This is because higher lithium ionic conductivities are obtained in the 80LiCoO2·20Li2SO4 and 80LiCoO2·20Li3PO4 active materials than in the others. The largest capacity is obtained in the cell with the 80LiCoO2·20Li2SO4 active material because of its good formability and high lithium ionic conductivity. In addition, the cell with the 80LiCoO2·20Li2SO4 positive electrode active material shows the better cycle and rate performance than that with the crystalline LiCoO2. It is noted that the amorphization with lithium oxy-acids is a promising technique for achieving a novel active material with better electrochemical performance.

Sodium deficient nickel–manganese oxides as intercalation electrodes in lithium ion batteries

2014 ◽  
Vol 2 (45) ◽  
pp. 19383-19395 ◽  
Author(s):  
M. Kalapsazova ◽  
R. Stoyanova ◽  
E. Zhecheva ◽  
G. Tyuliev ◽  
D. Nihtianova
Keyword(s):  
Lithium Ion Batteries ◽  
Manganese Oxides ◽  
Electrode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
Intercalation Electrodes ◽  
Nickel Manganese ◽  
Lithium Cells

The capability of sodium deficient nickel manganese oxides to participate in reactions of Li+intercalation and Na+/Li+exchange allows their use as low-cost electrode materials in lithium cells.

Advances In Electrolytes For High Capacity Rechargeable Lithium-Sulphur Batteries

2019 ◽  
Vol 04 ◽  
Author(s):  
Mir Mehraj Ud Din ◽  
Sampathkumar Ramakumar ◽  
Indu M.S ◽  
Ramaswamy Murugan
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
Active Material ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Environmental Friendliness ◽  
Storage Devices ◽  
Li Battery ◽  
Li Batteries

: Reliable energy storage is a censorious need for an extensive range of requisite such as portable electronic devices, transportation, medical devices, spacecraft and elsewhere. Among known storage devices, the lithium ion (Li+) batteries have enticed attention because of higher theoretical energy density. Nevertheless, state-of-the-art electrolyte in lithium batteries utilizing a Li+ salt dissolved in organic-type solvents poses severe safety concerns like flammability arising from dendrite formation. Next generation (beyond Li+) battery systems such as lithium sulphur (Li-S) batteries have gained interest in recent times. This battery system has been extensively revisited in an attempt to develop high energy batteries and is now considered as the technology of choice for hybrid vehicle electrification and grid storage. Higher theoretical capacity and higher theoretical energy density, environmental friendliness and low cost of active material make the Li-S batteries an ideal candidate to meet increasing energy requirements. This review looks at various advanced electrolytic systems with much emphasis on solid state electrolytic systems for Li-S batteries because of their striking properties. The technical issues of the sulphur cathode are also summarized and the strategies followed in recent years are highlighted in this review to address these issues. It is anticipated that Li-S batteries with efficient solid electrolytic system may replace the conventional insertion-type low energy density Li+ batteries in near future.

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