An operando X-ray diffraction study of chloroaluminate anion-graphite intercalation in aluminum batteries

• DOI: 10.1073/pnas.1803576115
• Publication Date: 2018-05-14T19:20:11Z
• Authors: Chun-Jern Pan; Chunze Yuan; Guanzhou Zhu; Qian Zhang; Chen-Jui Huang; Meng-Chang Lin; Michael Angell; Bing-Joe Hwang; Payam Kaghazchi; Hongjie Dai
• Keywords: Energy storage; Aluminum batteries; Operando X-ray diffraction; Low temperature; 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 7. Clean energy; Ionic liquids; 0104 chemical sciences

Significance Operando X-ray diffraction experiments are performed to investigate chloroaluminate anion intercalation into a graphite positive electrode during electrochemical charging and discharging of rechargeable aluminum batteries in situ. The results revealed surprisingly ordered staging behavior despite the large size remarkably stable structure upon repeated deintercalation by anions. basic understanding will guide design development new battery materials batteries.