Accurate quantification of TiO_(2)(B)'s phase purity via Raman spectroscopy

查看全文 作　　者：Jiamiao [1]Ran;Hui [2]Liu;Hongliang [3,4]Dong;Peng [1]Gao;Haowei [5]Cheng;Jianing [3]Xu;Hailun [3]Wang;Zixing [1]Wang;Qingfeng [1]Fu;Jiaxu [5]Yan;Jilei [1]Liu 机构地区：[1]College of Materials Science and Engineering,Hunan Joint International Laboratory of Advanced Materials and Technology of Clean Energy,Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology,Hunan University,Changsha,410082,China;[2]College of Chemistry and Material Science,Hunan Agricultural University,Changsha,410128 China;[3]Center for High Pressure Science and Technology Advanced Research,Pudong,Shanghai,201203,China;[4]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,201899,China;[5]Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM),Nanjing Tech University(Nanjing Tech),30 South Puzhu Road,Nanjing,211800,China 出　　处：《Green Energy & Environment》索引2023年第8卷第5期,共9页 基　　金：This work was financially supported by the National Natural Science Foundation of China(22075074);Outstanding Young Scientists Research Funds from Hunan Province(2020JJ2004);Major Science and Technology Program of Hunan Province(2020WK2013);Natural Science Foundation of Hunan Province(2020JJ5035);National Natural Science Foundation of China(Grant No.11704185);the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure(SKL201802SIC). 摘　　要：Bronze phase titanium dioxide(TiO_(2)(B))could be a promising high-power anode for lithium ion battery.However,TiO_(2)(B)is a metastable material,so the as-synthesized samples are inevitably accompanied by the existence of anatase phases.It has been found that the TiO_(2)(B)'s purity is positively correlated with its electrochemical performance.Herein,we have established an accurate quantification of the TiO_(2)(B)/anatase ratio,by figuring out the function between the purity of TiO_(2)(B)phase in the high purity range and its Raman spectra features in combination of the calibration by the synchrotron radiation X-ray diffraction(XRD).Compared with the time-consuming electrochemical method,the rapid,sensitive and non-destructive features of Raman spectroscopy have made it a promising candidate for determining the purity of TiO_(2)(B).Further,the correlations developed in this work should be instructive in synthesizing pure TiO_(2)(B)and furthermore optimizing its electrochemical charge storage properties. 关 键 词：TiO_(2)(B) Phase purity Raman spectroscopy Synchrotron XRD Charge storage properties