Low temperature preparation of dense and highly conductive NASICON electrolyte by solid-state reactive sintering
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-12-15
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Language
en
Pages
8
Series
Solid State Ionics, Volume 373
Abstract
NASICON-type solid-state electrolyte is characterized by high electrical conductivity but its application in all-solid-state battery is limited by the high sintering temperature and poor interface contact with the electrodes. Here, solid-state reactive sintering, without intermediate calcination and ball-milling steps and no sintering additive, is proposed to prepare dense and highly conductive NASICON at lower temperatures. The samples sintered at 950 and 1000 °C achieve relative density of ~90% and high ion conductivity of 8.43 × 10−4 and 1.48 × 10−3 S cm−1 at room temperature, respectively. The reasonable interface contact between sodium metal and 950 °C-sintered electrolyte affords the symmetric sodium battery to cycle stably at 0.05 mA cm−2 for ~1000 h and full battery at 0.1C (0.02 mA cm−2) at room temperature. This work provides a new strategy to prepare NASICON solid-state electrolyte, which can be extended to prepare other solid-state electrolytes and thus promote the development of all-solid-state battery.Description
Funding Information: This work was funded by the Natural Science Foundation of Tianjin ( 18JCQNJC02800 ). Publisher Copyright: © 2021 Elsevier B.V.
Keywords
NASICON, Sodium battery, Solid-state electrolyte, Solid-state reactive sintering
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Citation
Xing, Y, Li, Y & Zhang, C 2021, ' Low temperature preparation of dense and highly conductive NASICON electrolyte by solid-state reactive sintering ', Solid State Ionics, vol. 373, 115811 . https://doi.org/10.1016/j.ssi.2021.115811
