Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes
The solid electrolyte is of great interest owing to its potential to be applied in a wide variety of electrochemical devices. One of the most stable solid electrolytes is lithium phosphate (Li3PO4). However, this compound has low enough conductivity to be applied to a device such as an electrolyte....
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doaj-569a395f097e4644b3ff5699e2ada2012020-11-24T21:43:42ZengUniversitas IndonesiaInternational Journal of Technology2086-96142087-21002017-12-01881516152410.14716/ijtech.v8i8.681681Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid ElectrolytesHeri Jodi0Anne Zulfia Syahrial1Sudaryanto Sudaryanto2Evvy Kartini3- National Nuclear Energy Agency, Center for Science and Technology of Advanced Materials (PSTBM BATAN), Indonesia<br/>- Department of Metalurgy and Material Engineering, Faculty of Engineering, UnivDepartment of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas IndonesiaNational Nuclear Energy Agency, Center for Science and Technology of Advanced Materials (PSTBM BATAN), IndonesiaNational Nuclear Energy Agency, Center for Science and Technology of Advanced Materials (PSTBM BATAN), IndonesiaThe solid electrolyte is of great interest owing to its potential to be applied in a wide variety of electrochemical devices. One of the most stable solid electrolytes is lithium phosphate (Li3PO4). However, this compound has low enough conductivity to be applied to a device such as an electrolyte. A previous study has reported that the mixture of xLi2O-P2O5, where x=2, has a greater conductivity than Li3PO4, while, when x=1, this yields an amorphous structure. In this study, new compositions of the xLi2O-P2O5 compounds, where 1?x?2, were prepared through solid-state reactions. The prepared compounds were characterized using X-ray Diffraction Spectrometry (XRD), Scanning Electron Microscopy (SEM), and Electrochemical Impedance Spectroscopy (EIS) measurements in order to investigate their structure, morphology, and electrochemical properties. The XRD characterization showed that both of the samples were composed mainly of Li4P2O7 crystals. Agglomeration of particles was observed in the samples. The conductivity of the compounds was of the order of 10?6 S/cm, which was higher by three orders of magnitude than that of Li3PO4. The evaluated power exponent of conductivity indicated that the long-range drift of ions may be one of the sources of ion conduction in both of the observed samples. The nature of the dielectric loss indicated that the conduction in the samples was more predominantly DC conduction.http://ijtech.eng.ui.ac.id/article/view/681Solid electrolytesLi2O-P2O5Electrochemical impedance spectrometryConductivityDielectric |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Heri Jodi Anne Zulfia Syahrial Sudaryanto Sudaryanto Evvy Kartini |
spellingShingle |
Heri Jodi Anne Zulfia Syahrial Sudaryanto Sudaryanto Evvy Kartini Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes International Journal of Technology Solid electrolytes Li2O-P2O5 Electrochemical impedance spectrometry Conductivity Dielectric |
author_facet |
Heri Jodi Anne Zulfia Syahrial Sudaryanto Sudaryanto Evvy Kartini |
author_sort |
Heri Jodi |
title |
Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes |
title_short |
Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes |
title_full |
Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes |
title_fullStr |
Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes |
title_full_unstemmed |
Synthesis and Electrochemical Characterization of New Li2O-P2O5 Compounds for Solid Electrolytes |
title_sort |
synthesis and electrochemical characterization of new li2o-p2o5 compounds for solid electrolytes |
publisher |
Universitas Indonesia |
series |
International Journal of Technology |
issn |
2086-9614 2087-2100 |
publishDate |
2017-12-01 |
description |
The solid electrolyte is of great interest owing to its potential to be applied in a wide variety of electrochemical devices. One of the most stable solid electrolytes is lithium phosphate (Li3PO4). However, this compound has low enough conductivity to be applied to a device such as an electrolyte. A previous study has reported that the mixture of xLi2O-P2O5, where x=2, has a greater conductivity than Li3PO4, while, when x=1, this yields an amorphous structure. In this study, new compositions of the xLi2O-P2O5 compounds, where 1?x?2, were prepared through solid-state reactions. The prepared compounds were characterized using X-ray Diffraction Spectrometry (XRD), Scanning Electron Microscopy (SEM), and Electrochemical Impedance Spectroscopy (EIS) measurements in order to investigate their structure, morphology, and electrochemical properties. The XRD characterization showed that both of the samples were composed mainly of Li4P2O7 crystals. Agglomeration of particles was observed in the samples. The conductivity of the compounds was of the order of 10?6 S/cm, which was higher by three orders of magnitude than that of Li3PO4. The evaluated power exponent of conductivity indicated that the long-range drift of ions may be one of the sources of ion conduction in both of the observed samples. The nature of the dielectric loss indicated that the conduction in the samples was more predominantly DC conduction. |
topic |
Solid electrolytes Li2O-P2O5 Electrochemical impedance spectrometry Conductivity Dielectric |
url |
http://ijtech.eng.ui.ac.id/article/view/681 |
work_keys_str_mv |
AT herijodi synthesisandelectrochemicalcharacterizationofnewli2op2o5compoundsforsolidelectrolytes AT annezulfiasyahrial synthesisandelectrochemicalcharacterizationofnewli2op2o5compoundsforsolidelectrolytes AT sudaryantosudaryanto synthesisandelectrochemicalcharacterizationofnewli2op2o5compoundsforsolidelectrolytes AT evvykartini synthesisandelectrochemicalcharacterizationofnewli2op2o5compoundsforsolidelectrolytes |
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1725912420935794688 |