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Na3Zr2Si2PO12 solid electrolyte with Bi2O3 as sintering aid for solid-state sodium batteries.
- Source :
- Journal of Solid State Electrochemistry; Jul2024, Vol. 28 Issue 7, p2341-2349, 9p
- Publication Year :
- 2024
-
Abstract
- Improving the density of Na<subscript>3</subscript>Zr<subscript>2</subscript>Si<subscript>2</subscript>PO<subscript>12</subscript> (NZSP) solid electrolyte is crucial for its application in solid-state sodium batteries. Here, bismuth oxide with low melting point has been evaluated as a sintering aid for NZSP solid electrolytes. Research has found that NZSP doped with 5 mass% Bi<subscript>2</subscript>O<subscript>3</subscript> increases grain boundary mobility by 3.1 times and has an ionic conductivity of 4.78 × 10<superscript>−3</superscript> S cm<superscript>−1</superscript>, with a minimum activation energy of 0.30 eV, approximately 5 times that of undoped Bi<subscript>2</subscript>O<subscript>3</subscript>. This is because the electrolyte density increased from 77.3 to 93.7%. Compared with the region III process of NZSP without Bi<subscript>2</subscript>O<subscript>3</subscript>, Bi<subscript>2</subscript>O<subscript>3</subscript> promotes the densification process of Bi<subscript>2</subscript>O<subscript>3</subscript> dopant coarsening in region III. The constant current cycle of Na | NZSP-5 mass% Bi<subscript>2</subscript>O<subscript>3</subscript> | Na symmetric battery indicates that no short circuit will occur within 1200 h. The discharge capacity of solid-state batteries at 0.2 C is 98.5 mAh g<superscript>−1</superscript>. This indicates that NZSP doped with 5% Bi<subscript>2</subscript>O<subscript>3</subscript> is a good electrolyte choice for sodium-ion batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 28
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 178293483
- Full Text :
- https://doi.org/10.1007/s10008-023-05772-8