Femtosecond X-ray Laser Reveals Intact Sea?Island Structures of Metastable Solid-State Electrolytes for Batteries
Femtosecond X-ray Laser Reveals Intact Sea?Island Structures of Metastable Solid-State Electrolytes for Batteries
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飞秒 X 射线激光揭示了电池用亚稳态固态电解质的完整海岛结构
DOI：
10.1021/acs.nanolett.1c04392
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发表时间：
2022
期刊：
影响因子：
10.8
通讯作者：
Nishino Yoshinori
中科院分区：
文献类型：
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作者：
Suzuki Akihiro;Tanaka Hiromochi;Yamashige Hisao;Orikasa Yuki;Niida Yoshiya;Kimura Takashi;Tono Kensuke;Yabashi Makina;Ishikawa Tetsuya;Bessho Yoshitaka;Joti Yasumasa;Nishino Yoshinori
近年来，随着计算材料发现的发展，亚稳态功能材料纳米结构的实验表征引起了人们极大的关注。然而，由于亚稳态玻璃陶瓷很容易被辐照破坏，迄今为止还没有实现无损伤纳米成像。在这里，我们提出了新的高对比度相干衍射成像，定量分析的亚稳玻璃陶瓷使用飞秒X射线脉冲的完整的内部纳米结构。将样品颗粒浸入溶剂中有助于增强重建图像的对比度，并使我们能够区分无定形形式和晶体之间的0.7%的电子密度差异。此外，用带通滤波器的形态学操作定量地阐明了深度信息。对于所测量的亚稳态（Li 2S）70-（P2 S5）30玻璃陶瓷颗粒，非晶相与结晶相的评估体积比为1.25：1。硫化物玻璃陶瓷用作全固态电池的电解质，这对于减少碳足迹是不可或缺的。我们的研究结果将促进脆弱的亚稳材料的结构研究具有重要的科学和工业意义。
Experimental characterization of the nanostructure of metastable functional materials has attracted significant attention with recent advances in computational materials discovery. However, since metastable glass–ceramics are easily damaged by irradiation, damage-free nanoimaging has not been realized thus far. Herein, we propose novel high-contrast coherent diffractive imaging that quantitatively analyzes the intact internal nanostructure of metastable glass–ceramics using femtosecond X-ray pulses. The immersion of sample particles in a solvent helps enhance the reconstructed image contrast and allows us to distinguish an ∼7% electron density difference between an amorphous form and crystals. Furthermore, morphological operations with a band-pass filter quantitatively elucidate the depth information. The evaluated volume ratio of the amorphous to crystalline phases is ∼2.5:1 for the measured metastable (Li2S)70–(P2S5)30glass–ceramic particle. Sulfide glass–ceramics are used as electrolytes for all-solid-state batteries, which are indispensable for reducing the carbon footprint. Our results will facilitate structural studies on fragile metastable materials with important scientific and industrial implications.