TY - JOUR
T1 - High-Voltage and Noncorrosive Ionic Liquid Electrolyte Used in Rechargeable Aluminum Battery
AU - Wang, Huali
AU - Gu, Sichen
AU - Bai, Ying
AU - Chen, Shi
AU - Wu, Feng
AU - Wu, Chuan
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/10/19
Y1 - 2016/10/19
N2 - As a promising post-lithium battery, rechargeable aluminum battery has the potential to achieve a three-electron reaction with fully use of metal aluminum. Alternative electrolytes are strongly needed for further development of rechargeable aluminum batteries, because typical AlCl3-contained imidazole-based ionic liquids are moisture sensitive, corrosive, and with low oxidation voltage. In this letter, a kind of noncorrosive and water-stable ionic liquid obtained by mixing 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]OTF) with the corresponding aluminum salt (Al(OTF)3) is studied. This ionic liquid electrolyte has a high oxidation voltage (3.25 V vs Al3+/Al) and high ionic conductivity, and a good electrochemical performance is also achieved. A new strategy, which first used corrosive AlCl3-based electrolyte to construct a suitable passageway on the Al anode for Al3+, and then use noncorrosive Al(OTF)3-based electrolyte to get stable Al/electrolyte interface, is put forward.
AB - As a promising post-lithium battery, rechargeable aluminum battery has the potential to achieve a three-electron reaction with fully use of metal aluminum. Alternative electrolytes are strongly needed for further development of rechargeable aluminum batteries, because typical AlCl3-contained imidazole-based ionic liquids are moisture sensitive, corrosive, and with low oxidation voltage. In this letter, a kind of noncorrosive and water-stable ionic liquid obtained by mixing 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]OTF) with the corresponding aluminum salt (Al(OTF)3) is studied. This ionic liquid electrolyte has a high oxidation voltage (3.25 V vs Al3+/Al) and high ionic conductivity, and a good electrochemical performance is also achieved. A new strategy, which first used corrosive AlCl3-based electrolyte to construct a suitable passageway on the Al anode for Al3+, and then use noncorrosive Al(OTF)3-based electrolyte to get stable Al/electrolyte interface, is put forward.
KW - [BMIM]OTF ionic liquids
KW - electrochemical performance
KW - electrolyte
KW - high voltage
KW - rechargeable aluminum battery
UR - http://www.scopus.com/inward/record.url?scp=84992179925&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b10579
DO - 10.1021/acsami.6b10579
M3 - Article
AN - SCOPUS:84992179925
SN - 1944-8244
VL - 8
SP - 27444
EP - 27448
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 41
ER -