Insights into dynamic molecular intercalation mechanism for AleC battery by operando synchrotron X-ray techniques
學年 107
學期 2
出版（發表）日期 2019-05-01
作品名稱 Insights into dynamic molecular intercalation mechanism for AleC battery by operando synchrotron X-ray techniques
作品名稱（其他語言）
著者 Di-Yan Wang; Shao-Ku Huang; Hsiang-Ju Liao; Yu-Mei Chen; Sheng-Wen Wang; Yu-Ting Kao; Ji-Yao An; Yi-Cheng Lee; Cheng-Hao Chuang; Yu-Cheng Huang; Ying-Rui Lu; Hong-Ji Lin; Hung-Lung Chou; Chun-Wei Chen; Ying-Huang Lai; Chung-Li Dong
單位
出版者
著錄名稱、卷期、頁數 Carbon 146, p.528-534
摘要 Recently, a novel rechargeable Al ion battery (AIB) with high performance has been developed. Owing to its low cost, high-rate capability, excellent cyclability, and non-flammability, AIB provides a safe alternative to many commercial batteries used in the energy storage system. To improve its performance, identifying molecular structure and arrangement of chloroaluminate anion (AlCl4−) intercalated in the graphite layer remains a great challenge. In this work, operando analysis of X-ray diffraction (XRD) measurement and X-ray absorption (XAS) spectroscopy were performed to investigate the intercalation of AlCl4− anion and related molecular arrangement in the graphite layers. The intercalated stage and intercalant gallery height of graphite cathode electrode during AIB battery operation were observed to be stage 3 and 9.22 Å, respectively. Furthermore, the spectral evolution from ex-situ XAS at the Al and Cl K-edge was associated with closely packed intercalation of AlCl4− molecules. With density functional theory (DFT) calculation, three simulated models of intercalated AlCl4− molecules in the graphite layer were revealed successfully, which explained possible molecular structures at different charging states. This analytical methodology paves the way for better understanding the structural transformation of molecular ions de-/intercalation in graphite layers.
關鍵字 Al ion battery;X-ray absorption spectroscopy;In-situ X-ray diffraction;Simulated core-level spectrum;Anion intercalation
語言 en
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,電子版
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