Probing solid-state reaction through microstrain: A case study on synthesis of LiCoO2

JOURNAL OF POWER SOURCES

卷:469

Article

Gim, Jihyeon¹  Zhang, Yinzhi²  Gao, Han¹  Xu, Gui-Liang¹  Guo, Fangmin³  Ren, Yang³  Amine, Khalil¹  Chen, Zonghai¹ 

[1] Argonne Natl Lab, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA

[2] Albemarle Corp, 348 Holiday Inn Dr, Kings Mt, NC 28086 USA

[3] Argonne Natl Lab, Xray Sci Div, 9700 South Cass Ave, Lemont, IL 60439 USA

关键词: Solid-state reaction;    Microstrain;    Structure-property relationship;    LiCoO2;    Battery;   

DOI  :  10.1016/j.jpowsour.2020.228422

来源: Elsevier

【 摘 要 】

Solid-state reaction has been widely adopted as a low-cost and scalable approach to synthesize inorganic materials for industrial applications. However, a special caution must be paid to carefully control the synthesis condition in order to obtain final products with desired structure and physical/chemical properties. In this work, LiCoO2 was investigated as a model material to illustrate the complexity of the solid-state reaction, as well as its condition control. Taking the advantage of the high flux and high penetration capability of synchrotron X-ray source, in-situ high-energy X-ray diffraction was deployed to investigate the structural evolution of materials during the solid-state reaction while ex-situ high-resolution X-ray diffraction was utilized to quantify the residual microstrains of LiCoO2. It is shown that the microstrain is a sensitive indicator to probe the completeness of the solid-state reactions, and that it also provides a more quantitative way to establish the structure-property relationship of materials. It can serve as a sensitive indicator for the rational design of synthesis process for functional materials.

【 授权许可】

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