scholarly journals Synthesis of Lithium Manganese Oxide by a Sol-Gel Method and Its Electrochemical Behaviors

2003 ◽  
Vol 6 (4) ◽  
pp. 229-235
Author(s):  
Euh-Duck Jeong ◽  
Sung-Wook Moon ◽  
Hak-Myoung Lee ◽  
Mi-Sook Won ◽  
Jang-Hee Yoon ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Sol Gel ◽  
Lithium Manganese Oxide ◽  
Electrochemical Behaviors ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lithium Manganese

Laboratory Scale Production of Lithium Manganese Oxide as Active Material of Lithum-Ion Batteries in Sol-Gel Method Assisted by Local Biomass

2020 ◽  
Vol 10 (2) ◽  
Author(s):  
Muhammad Ilham Bayquni ◽  
Susanto Sigit Rahardi ◽  
Elsy Rahimi Chaldun ◽  
Bambang Sunendar Purwasasmita
Keyword(s):  
Manganese Oxide ◽  
Sol Gel ◽  
Lithium Manganese Oxide ◽  
Synthesis Process ◽  
Scale Production ◽  
Limn2o4 Spinel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lithium Manganese ◽  
Auto Combustion

Experimental and theoretical studies of the production of lithium manganese oxide (LiMn2O4) using sol-gel method have been carried out on a larger scale than previous studies.  The purpose of this investigation was to observe sample behavior along the synthesis process to be considered in further scale-up production of lithium manganese oxide, based on the sol-gel method. Calcination products were analyzed by TGA and crystalline phase formation analyzed by XRD. LiMn2O4 spinel phase was formed at 600oC. SEM showed some interesting morphology. Xerogel swelling was observed overwhelmingly during drying at 250oC to 300oC. Exothermic occurrence as a source of irregular and unpredictable auto combustion in the calcination process. Both phenomenon were not observed in a xerogel made with a small amount precursor. Therefore, initial mixture adjustment and additional steps were considered for production.

Preparation of porous manganese oxide nanomaterials by one-pot synthetic sol–gel method

2011 ◽  
Vol 58 (2) ◽  
pp. 535-538 ◽  
Author(s):  
Marauo Davis ◽  
Cenk Gümeci ◽  
Courtney Kiel ◽  
Louisa J. Hope-Weeks
Keyword(s):  
Manganese Oxide ◽  
Sol Gel ◽  
One Pot ◽  
Gel Method ◽  
Sol Gel Method

Synthesis and characterisation of sulphided lithium manganese spinels LiMnOS prepared by sol–gel method

2005 ◽  
Vol 176 (19-22) ◽  
pp. 1705-1709 ◽  
Author(s):  
M MOLENDA ◽  
R DZIEMBAJ ◽  
D MAJDA ◽  
M DUDEK
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lithium Manganese

Synthesis and Electrochemical Behaviour of Lithium Manganese Vanadates

2012 ◽  
Vol 545 ◽  
pp. 195-198 ◽  
Author(s):  
Norlida Kamarulzaman ◽  
Norashikin Kamarudin ◽  
Rusdi Roshidah ◽  
Kelimah Elong ◽  
Jaafar Mohd Hilmi
Keyword(s):  
Single Phase ◽  
Electrochemical Behaviour ◽  
Sol Gel ◽  
Thermal Studies ◽  
Synthesis Method ◽  
Constant Current ◽  
Gel Method ◽  
Sol Gel Method ◽  
Lithium Manganese ◽  
Charge Discharge

Lithium manganese vanadates are synthesized using the sol-gel method. The sol-gel method is a better synthesis method compared to that of the solid state reaction method and usually yields purer and more uniform sized particles. It also uses lower sintering temperatures and shorter time. This will be a savings in terms of costs of the material as heating requires a lot of electrical energy. Precursor materials acquired are subjected to thermal studies and a suitable sintering temperature is chosen in order to achieve pure, single phase compounds. As is well known it is not easy to get pure single phase final products for materials containing vanadium and manganese. From X-Ray diffraction (XRD), the results showed multi phase spinel lithium manganese vanadates. Battery fabrication is done using a composite cathode and a half cell is assembled in an argon filled glove box. Cell testing is done using a constant current charge-discharge procedure. The results show reasonable charge-discharge behaviour but the capacity is a little less than that for LiMn2O4.

scholarly journals Preliminary Study of Synthesis of Sodium Manganese Oxide Using Sol-Gel Method as Sodium Ion Battery Material

2020 ◽  
Vol 11 (2) ◽  
pp. 28-34
Author(s):  
Susanto Sigit Rahardi ◽  
Muhammad Ilham Bayquni ◽  
Bambang Sunendar Purwasasmita
Keyword(s):  
Manganese Oxide ◽  
Sol Gel ◽  
Lithium Ion ◽  
Chelating Agent ◽  
Sodium Ion ◽  
Phase Identification ◽  
Sodium Ion Battery ◽  
Gel Method ◽  
Sol Gel Method ◽  
Water Solvent

Sodium ion battery is one of the promising alternatives to lithium ion battery. Sodium manganese oxide as the sodium ion battery catode material has been synthesized by modifying the sol-gel method used to obtain lithium manganese oxide. The precursors used were table salt and manganese chloride. The sol-gel process used was water solvent, citric acid as a chelating agent and chitosan as the template. Thermal decomposition and formation zone obtained from simple thermal analysis using furnace and digital scales. Calcination was carried out at 600°C and 850°C for 2 hours. Crystal properties and morphology were analyzed using XRD and SEM. Based on the analysis of XRD pattern, sodium manganese oxide crystals (Na0.7MnO2.05 JCPDS 27-0751) have been formed at both of the calcination temperature. Observed morphology of the sample showed the domination Mn3O4 JCPDS 18-0803 in accordance with crystalline phase identification. These results demonstrate that the modified sol-gel method could be used to obtain sodium manganese oxide as sodium ion battery cathode material.

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