电解质
导线
陶瓷
质子导体
复合数
材料科学
质子
化学工程
复合材料
化学
物理化学
物理
工程类
电极
核物理学
作者
Qianqian Pan,Daoming Huan,Zongzi Jin,Xiaoye Liu,Yan Huang,Xiangkun Kong,Bo Feng,Zhongxu Wang,Mingxuan Dai,Ranran Peng,Zhongliang Zhan,Chusheng Chen,C.Y Wang
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2024-04-22
卷期号:: 2286-2292
标识
DOI:10.1021/acsenergylett.3c02590
摘要
Protonic ceramic cells (PCCs) have drawn great attention on account of their reversibility and high efficiency. We propose a strategy to design a composite proton conductor composed of BaZr0.1Ce0.7Y0.2O3−δ (BZCY) and Li6.4La3Zr1.4Ta0.6O12 (LLZTO) sintered through ultrafast high-temperature sintering, showing a reduced sintering temperature of 1170 °C. BZCY particles are uniformly distributed within a continuously conformal framework formed by the low-melting LLZTO phase. The unique structural design avoids the sharp edge between BZCY particles caused by the soft LLZTO phase, resulting in faster proton migration at the grain boundary region. As a result, the new composite electrolyte exhibits a proton conductivity of 0.028 S cm–1 at 600 °C, 4.5 times that of BZCY. Furthermore, we demonstrate that LLZTO exhibits considerable proton conductivity by combining our experimental and simulation results. This research advances the potential of combining proton and lithium-ion conducting composites with high proton conductivity and low sintering temperature for PCCs.
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