PF6– Intercalation into Graphite Electrode from Propylene Carbonate
Source abstract
Abstract
LiPF6-propylene carbonate (PC) solutions show some compatibility with the graphite positive electrode in dual-ion batteries. The relationship between the anion storage capacity and LiPF6 concentration is investigated by galvanostatic charge–discharge tests. Ex situ X-ray diffraction (XRD) measurements are carried out on graphite electrode recovered from Li/graphite cells at the end of charge to probe the storage situation of PC-solvated PF6– inside graphite electrode. In situ XRD measurements on Li/graphite cells are performed to trace the crystal structural changes of anion–graphite intercalation compounds. Electrochemical quartz crystal microbalance (EQCM) measurement is conducted on graphite electrode to evaluate the transport of solvent during the anion storage. Nuclear magnetic resonance (NMR) and infrared (IR) spectroscopic studies on the solutions reveal the interactions between ions and PC solvent. The electrochemical performance of graphite is correlated with solvation state of LiPF6-PC solution.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
Funding
National Natural Science Foundation of China
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