Conference Presentation (After Call)

FZJ-2015-06285

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Development of solid state electrolytes for lithium and sodium ion batteries

Guin, M. (Corresponding author)FZJ* ; Ma, Q.FZJ* ; Xu, Q. ; Dashjav, E.FZJ* ; Sierau, J.FZJ* ; Tietz, F.FZJ* ; Guillon, O.FZJ*

2015

Abstract: NASICON materials of the general formula AMM’(SiO4)x(PO4)3-x (A = Li or Na, M and M’ = Al, Ti, Sc or Zr) are investigated because they are promising solid-state electrolytes for Li- or Na-ion batteries. A novel sol-gel method was developed to prepare Li1.5Al0.5Ti1.5(PO4)3 in kg-level and at low cost with high phase purity. The lithium conductivity of the samples reached 5 × 10-4 S/cm at room temperature. Na3.4Sc2(SiO4)0.4(PO4)2.6 powders were synthesized via solid state reaction and the sodium conductivity of the samples at room temperature was 8 × 10-4 S/cm. These values place our materials among the best NASICON conductive materials reported to date. The impact of water on the measured conductivities and activation energies was also investigated for different NASICON compositions, as well as the stability of these electrolytes against electrode materials.

---

Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. JARA-ENERGY (JARA-ENERGY)
3. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2015

---