TY - JOUR
T1 - A novel aqueous dual-ion battery using concentrated bisalt electrolyte
AU - Li, Huan
AU - Kurihara, Takuya
AU - Yang, Dengyao
AU - Watanabe, Motonori
AU - Ishihara, Tatsumi
N1 - Funding Information:
This work was financially supported by the Feasibility Study on New Technology for Energy and Environment from the New Energy and Industrial Technology Development Organization (NEDO), Japan.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/6
Y1 - 2021/6
N2 - A high-concentration aqueous electrolyte with a wide electrochemical stability window represents a novel development direction for traditional aqueous batteries. Herein, a novel high-concentration water-in-bisalt electrolyte using LiFSI (lithium bis(fluorosulfonyl)imide) and LiTFSI (lithium bis(trifluoromethanesulfonyl)imide) as supporting salts was first applied as an electrolyte of a dual-ion battery, and the solvated structure changes were studied in detail. Electronic interactions were detected between the two supporting salts. Furthermore, when 37 mol/kg LiFSI-LiTFSI/H2O was applied to a 3 V dual-ion battery, by using graphitic carbon (KS6) and activated carbon (AC) as cathode and anode materials, the full cell delivered a high specific capacity of 72 mAh/g. In addition, excellent cycling stability for ˃100 cycles was achieved with negligible capacity fading.
AB - A high-concentration aqueous electrolyte with a wide electrochemical stability window represents a novel development direction for traditional aqueous batteries. Herein, a novel high-concentration water-in-bisalt electrolyte using LiFSI (lithium bis(fluorosulfonyl)imide) and LiTFSI (lithium bis(trifluoromethanesulfonyl)imide) as supporting salts was first applied as an electrolyte of a dual-ion battery, and the solvated structure changes were studied in detail. Electronic interactions were detected between the two supporting salts. Furthermore, when 37 mol/kg LiFSI-LiTFSI/H2O was applied to a 3 V dual-ion battery, by using graphitic carbon (KS6) and activated carbon (AC) as cathode and anode materials, the full cell delivered a high specific capacity of 72 mAh/g. In addition, excellent cycling stability for ˃100 cycles was achieved with negligible capacity fading.
UR - http://www.scopus.com/inward/record.url?scp=85103685985&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85103685985&partnerID=8YFLogxK
U2 - 10.1016/j.ensm.2021.03.029
DO - 10.1016/j.ensm.2021.03.029
M3 - Article
AN - SCOPUS:85103685985
SN - 2405-8297
VL - 38
SP - 454
EP - 461
JO - Energy Storage Materials
JF - Energy Storage Materials
ER -
