Combining Experiments and Theoretical Calculations to Investigate the Intercalation Behavior of Bis(trifluoromethanesulfonimide) Anion into Graphite Electrodes from Alkyl Phosphates

Autor:	Zhijian Wu, Ying Wang, Lei Zhang, Hongyu Wang
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Materials science Intercalation (chemistry) Inorganic chemistry Alkyl phosphate chemistry.chemical_element Electrolyte Electrochemistry chemistry.chemical_compound chemistry General Materials Science Tributyl phosphate Lithium Graphite Alkyl
Zdroj:	ACS Applied Materials & Interfaces. 13:34197-34201
ISSN:	1944-8252 1944-8244
DOI:	10.1021/acsami.1c07222
Popis:	In dual-ion batteries (DIBs) utilizing organic electrolyte solutions, the combinations of electrolyte salt and solvent serve as a determiner of the electrochemical performance of graphite electrode partially because solvent participates in the anion intercalation procedure. In this case, every solvated-anion@graphite intercalation compound possesses the characteristic intercalated gallery height. However, in Li/graphite DIBs with concentrated LiTFSI (lithium bis(trifluoromethanesulfonimide))-alkyl phosphates (ca. trimethyl, triethyl, tripropyl, tributyl phosphate) solutions, solvated-TFSI-@graphite intercalation compounds have the nearly identical intercalated gallery height of about 0.803 nm, which may be mainly attributed to both the big size of TFSI- anion and the rigid PO4 framework of these alkyl phosphate solvents.
Databáze:	OpenAIRE
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