NSRRC Activity Report 2023

066 NSRRC ACTIVITY REPORT 2023 In summary, XAFS spectroscopy supplies a wealth of information regarding the properties, including the oxidation and local environment, of the absorption metal. As described above, materials lacking specific crystalline structures can also be observed through this technique. At Beamline TPS 44A , using a high enough concentration of the analysis material, spectra can be rapidly obtained through a quick scanning technique. This technique is not confined solely to battery research but also finds application in catalysis studies, including in-situ catalysis. (Reported by Chia-Che Chang, NSRRC) This report features the work of Bao-Lian Su, Aiwen Lei, Watchareeya Kaveevivitchai, Yu Qiao, Yan-Gu Lin, Xueliang Sun and their collaborators published in Nano Energy 105 , 108005 (2023); Energy Storage Mater. 54 , 553 (2023); Mater. Today Commun. 34 , 105231 (2023); Chem. Sci. 14 , 2183 (2023); J. Mater. Chem. A 11 , 11119 (2023); and Nat. Commun. 14 , 3780 (2023), respectively. TPS 44A Quick-scanning X-ray Absorption Spectroscopy • XANES, EXAFS • Materials Science, Batteries, Catalysts References 1. W.-D. Dong, Y. Li, C.-F. Li, Z.-Y. Hu, L.-C. Hsu, L.-H. Chen, Y. Li, A. Lei, B.-L. Su, Nano Energy 105 , 108005 (2023). 2. Y. Li, Y. Lu, X. Jiang, L. Lu, J. Qin, D. Yang, J.-L. Chen, L. Zhang, D. Wang, A. Lei, Energy Storage Mater. 54 , 553 (2023). 3. T. Yimtrakarn, Y.-C. Liao, A. Sanin, J.-L. Chen, Y.-C. Ch- uang, N. Lerkkasemsan, W. Kaveevivitchai, Mater. Today Commun. 34 , 105231 (2023). 4. L. Chen, C.-L. Chiang, X. Wu, Y. Tang, G. Zeng, S. Zhou, B. Zhang, H. Zhang, Y. Yan, T. Liu, H.-G. Liao, X. Kuai, Y.-G. Lin, Y. Qiao, S.-G. Sun, Chem. Sci. 14 , 2183 (2023). 5. L. Chen, C.-L. Chiang, G. Zeng, Y. Tang, X. Wu, S. Zhou, B. Zhang, H. Zhang, Y. Yan, T. Liu, H.-G. Liao, C. Wang, X. Kuai, Y.-G. Lin, Y. Qiao, S.-G. Sun, J. Mater. Chem. A 11 , 11119 (2023). 6. S. Zhang, F. Zhao, J. Chen, J. Fu, J. Luo, S. H. Alahakoon, L.-Y. Chang, R. Feng, M. Shakouri, J. Liang, Y. Zhao, X. Li, L. He, Y. Huang, T.-K. Sham, X. Sun, Nat. Commun. 14 , 3780 (2023). Fig. 4 : Local structure analyses of x Li 2 O–TaCl 5 amorphous SEs. (a) XANES, (b) EXAFS, and (c) FT EXAFS for x Li 2 O–TaCl 5 amorphous SEs, as well as Ta 2 O 5 and TaCl 5 at Ta L 3 -edge. (d) WT spectra of 1.2 Li 2 O-TaCl 5 , (e) 1.4 Li 2 O-TaCl 5 , (g) 1.6 Li 2 O-TaCl 5 , and (h) 1.8 Li 2 O-TaCl 5 at Ta L 3 -edge with a k 2 weighting. (f,i) The schematics of the local structures in superionic x Li 2 O–TaCl 5 amorphous SEs (x = 1.2 and 1.4 in (f); x = 1.6 and 1.8 in (i)). (The local structures mainly display the coordination and possible geometry of x Li 2 O-TaCl 5 amorphous SEs. Bond angles and Li ion numbers are not accurate.) Source data are provided as a Source Data file. [Reproduced from Ref. 6]