Abstract
Lithium ion conducting thin film electrolytes, Li 2O-B 2O 3-P 2O 5 glass systems, were prepared with a wide range of chemical composition by co-sputtering method with multi-targets. The maximum ionic conductivity at room temperature was 1.22 × 10 - 6 S/cm and the activation energy of this specimen was 0.54 eV when enhanced by the mixed former effect and the high network modifier content. The increased ion conductivity of the films appeared to be associated with the formation of stable tetrahedral borate at high lithium concentration and this structural change facilitated faster ion migrations. The relationship between the glass structure and electrical performance of the mixed former glasses was investigated by the infrared spectra analysis of borate networks. The conductivity of the mixed former electrolytes increased gradually with increasing the RF power on Li 2O target, and the maximum conductivity was obtained at 100 W. The structural role of the network modifier in xLi 2O-(1-x)(B 2O 3-P 2O 5) glasses was analyzed by the O1s spectra of X-ray Photoelectron Spectroscopy. A quantitative deconvolution of O1s spectra suggests that the increased conductivity with increasing lithium content is due to the formation of non-bridging oxygen.
| Original language | English |
|---|---|
| Pages (from-to) | 636-640 |
| Number of pages | 5 |
| Journal | Solid State Ionics |
| Volume | 225 |
| DOIs | |
| State | Published - 2012 Oct 4 |
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Keywords
- Lithium borophosphate electrolytes
- Multi-targets
- RF-magnetron sputtering
- Thin film batteries
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Characterization of lithium borophosphate glass thin film electrolytes deposited by RF-magnetron sputtering for micro-batteries. / Yoon, Yongsub; Park, Chanhwi; Kim, Junghoon; Shin, Dong Wook.
In: Solid State Ionics, Vol. 225, 04.10.2012, p. 636-640.Research output: Contribution to journal › Article
TY - JOUR
T1 - Characterization of lithium borophosphate glass thin film electrolytes deposited by RF-magnetron sputtering for micro-batteries
AU - Yoon, Yongsub
AU - Park, Chanhwi
AU - Kim, Junghoon
AU - Shin, Dong Wook
PY - 2012/10/4
Y1 - 2012/10/4
N2 - Lithium ion conducting thin film electrolytes, Li 2O-B 2O 3-P 2O 5 glass systems, were prepared with a wide range of chemical composition by co-sputtering method with multi-targets. The maximum ionic conductivity at room temperature was 1.22 × 10 - 6 S/cm and the activation energy of this specimen was 0.54 eV when enhanced by the mixed former effect and the high network modifier content. The increased ion conductivity of the films appeared to be associated with the formation of stable tetrahedral borate at high lithium concentration and this structural change facilitated faster ion migrations. The relationship between the glass structure and electrical performance of the mixed former glasses was investigated by the infrared spectra analysis of borate networks. The conductivity of the mixed former electrolytes increased gradually with increasing the RF power on Li 2O target, and the maximum conductivity was obtained at 100 W. The structural role of the network modifier in xLi 2O-(1-x)(B 2O 3-P 2O 5) glasses was analyzed by the O1s spectra of X-ray Photoelectron Spectroscopy. A quantitative deconvolution of O1s spectra suggests that the increased conductivity with increasing lithium content is due to the formation of non-bridging oxygen.
AB - Lithium ion conducting thin film electrolytes, Li 2O-B 2O 3-P 2O 5 glass systems, were prepared with a wide range of chemical composition by co-sputtering method with multi-targets. The maximum ionic conductivity at room temperature was 1.22 × 10 - 6 S/cm and the activation energy of this specimen was 0.54 eV when enhanced by the mixed former effect and the high network modifier content. The increased ion conductivity of the films appeared to be associated with the formation of stable tetrahedral borate at high lithium concentration and this structural change facilitated faster ion migrations. The relationship between the glass structure and electrical performance of the mixed former glasses was investigated by the infrared spectra analysis of borate networks. The conductivity of the mixed former electrolytes increased gradually with increasing the RF power on Li 2O target, and the maximum conductivity was obtained at 100 W. The structural role of the network modifier in xLi 2O-(1-x)(B 2O 3-P 2O 5) glasses was analyzed by the O1s spectra of X-ray Photoelectron Spectroscopy. A quantitative deconvolution of O1s spectra suggests that the increased conductivity with increasing lithium content is due to the formation of non-bridging oxygen.
KW - Lithium borophosphate electrolytes
KW - Multi-targets
KW - RF-magnetron sputtering
KW - Thin film batteries
UR - http://www.scopus.com/inward/record.url?scp=84867575640&partnerID=8YFLogxK
U2 - 10.1016/j.ssi.2012.05.008
DO - 10.1016/j.ssi.2012.05.008
M3 - Article
AN - SCOPUS:84867575640
VL - 225
SP - 636
EP - 640
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
ER -