Premium
Electrochemical performance of hard carbon anode in different carbonate‐based electrolytes
Author(s) -
Kha Le Minh,
Thanh Vo Duy,
Van Hoang Nguyen,
Thang Le Van,
Phung Le My Loan
Publication year - 2020
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.202000053
Subject(s) - anode , electrolyte , electrochemistry , carbonate , carbon fibers , materials science , chemical engineering , metallurgy , chemistry , electrode , composite material , engineering , composite number
The electrolytes of 1 M NaFSI dissolved in various carbonate solvents containing EC, PC and/or DMC have been investigated to find out the most compatible electrolyte composition with hard carbon (HC) anode in Na‐ion batteries (NIBs). The physical properties including viscosity and conductivity were measured to correlate with the electrochemical behaviors of these electrolytes. The Na/HC half‐cell was used for testing the charge/discharge performance of prepared electrolytes at room temperature. This best medium for the solvation of NaFSI salt is the mixture of EC, PC and DMC with the ratio 3:1:1, respectively. Indeed, this electrolyte delivered a highest capacity of 335.6 mAh.g ‐1 , excellent capacity retention of 73.7 % for 100 cycles.