Synthesis and characterization of Co-doped lithium manganese oxide as a cathode material for rechargeable Li-ion battery

Ionics ◽  
2016 ◽  
Vol 22 (9) ◽  
pp. 1567-1574 ◽  
Author(s):  
S. Sharmila ◽  
B. Janarthanan ◽  
J. Chandrasekaran
2018 ◽  
Vol 8 (11) ◽  
pp. 2330 ◽  
Author(s):  
Sebastian Dambone Sessa ◽  
Andrea Tortella ◽  
Mauro Andriollo ◽  
Roberto Benato

In this paper, a hybrid storage system solution consisting of flywheels and batteries with a Lithium-manganese oxide cathode and a graphite anode is proposed, for supporting the electrical network primary frequency regulation. The aim of the paper is to investigate the benefits of flywheels in mitigation of the accelerating aging that li-ion batteries suffer during the grid frequency regulation operation. For this purpose, experimental aging tests have been performed on a lithium-manganese oxide battery module and an electrical battery model which takes into account the battery aging has been developed in a Simulink environment. Then, a flywheel electrical model has been implemented, taking into account the thermal and the electromechanical phenomena governing the electrical power exchange. This more complete model of a hybrid storage system enables us to simulate the same aging cycles of the battery-based storage system and to compare the performances of the latter with the hybrid storage system. The simulation results suggest that suitable control of the power shared between the batteries and the flywheels could effectively help in countering Li-ion battery accelerated aging due to the grid frequency regulation service.


2009 ◽  
Vol 24 (3) ◽  
pp. 347-353 ◽  
Author(s):  
Yuhong Chen ◽  
Zhiyuan Tang ◽  
Guoqing Zhang ◽  
Xuemei Zhang ◽  
Ruizhen Chen ◽  
...  

2020 ◽  
Vol 21 (2) ◽  
pp. 84
Author(s):  
Indra Gunawan ◽  
Yustinus P ◽  
Sudaryanto Sudaryanto ◽  
Jadigia Ginting

SYNTHESIS AND CHARACTERIZATION OF LiFePO4/PPy/CLAY COMPOSITE AS CATHODE MATERIAL FOR Li-ION BATTERY. Conductor polymers have been used previously as a conducting agent or carbon source in various sol-gel and solid state methods to increase the conductivity of LiFePO4. The composite of LiFePO4/PPy/Clay were synthesized by mixing LiFePO4 and clay with a Ppy solution. The characterizations were done by using X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and LCR meter respectively. From XRD analysis it could be deduced that LiFePO4 has an ordered olivine structure with a Pnma space group. The SEM images provide clear evidence that small crystal particles of LiFePO4 either coat the surface of the clay particles or lie among them. These LiFePO4 particles have a small particle size (100–500 nm). With the increasing of LiFePO4 content, these small crystal particles at the surface or among the clay particles are increased. Increasing the PPy content to increase the conductivity of the material obtained. With the addition of clay from 5 to 10 wt. %, the DC conductivity of the blends is clearly observed to increase up to three orders of magnitude.


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