Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 18, Pages 25689-25695Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.05.176
Keywords
Lithium-ion solid electrolyte; Garnet-type structure; Li7La3Zr2O12; Sintering atmosphere
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Funding
- Yunnan Ten Thousand Talents Plan Young & Elite Talents Project [109720190092]
- Yunnan Provincial Natural Science Key Foundation [202201AS070032]
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Al-LLZO-O-2 sample with the highest relative density and largest grain size demonstrates higher lithium-ion conductivity.
Al-doped Li7La3Zr2O12 (Al-LLZO) solid electrolytes were sintered at 1150.C for 8 h in atmosphere of oxygen, argon and air (named as Al-LLZO-O-2, Al-LLZO-Ar and Al-LLZO-Air, respectively). All the Al-LLZO samples exhibited a single cubic garnet-type structure. The sample of Al-LLZO-O-2 possessed the highest relative density (95.60%) and the largest average grain size among the three Al-LLZO samples. Furthermore, owing to its high relative density and small number of grain boundaries, Al-LLZO-O-2 demonstrated a higher lithium-ion conductivity than Al-LLZO-Ar and Al-LLZO-Air.
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