高电导率F掺杂Li 7 La 3 Zr 2 O 12 石榴石结构固体电解质
Source abstract
Abstract
通过传统固相反应法合成一种新型的F掺杂Li 7 La 3 Zr 2 O 12 (LLZO)石榴石结构固体电解质。添加适量LiF和CaF 2 等氟化物经过两步煅烧在室温下获得纯立方相的LLZO陶瓷粉体, 验证氟离子掺杂具有稳定石榴石结构立方相和增强陶瓷烧结活性的作用。制备的1wt% LiF-LLZO电解质总电导率达5×10 -4 S/cm, 接近立方相LLZO的体电导率, 电导活化能仅为0.26 eV, 低于其他阳离子掺杂的LLZO。(321)、(400)、(642)和(800)晶面衍射峰由于晶粒的生长取向而显著增强, 陶瓷内部晶界消失, 形成由闭气孔构成的独特显微结构, 导致该新型电解质的晶界阻抗的消失和总电导率的提升。
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Luminescence Properties of Advanced Materials
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