TY - JOUR
T1 - An Organic Acid-Alkali Coregulated Ionic Liquid Electrolyte Enabling Wide-Temperature-Range Proton Battery
AU - Ma, Huige
AU - Yang, Mingsheng
AU - Li, Rui
AU - Zheng, Liping
AU - Hao, Yuxin
AU - Li, Hongwei
AU - Li, Mengxiao
AU - Zhao, Guoqing
AU - Wang, Zhihui
AU - Wang, Bei
AU - Hu, Mingjun
AU - Yang, Jun
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2025/4/9
Y1 - 2025/4/9
N2 - The broad applications of rechargeable batteries urge people to develop alternative energy storage devices with sustainable resources, high capacity, long cycling life, and wide-temperature operability. Aqueous proton batteries are considered as a state-of-the-art energy storage system due to their intrinsic safety and low cost. However, aqueous electrolytes have a low boiling point and narrow electrochemical stability window, limiting their applications in wide-temperature and high-energy batteries. Herein, a hybrid organic ionic liquid electrolyte with organic alkali 1-methyl-1,2,4-triazole (MTA) protonated by organic acid bis(trifluoromethysulfonyl)imide (HTFSI) as proton carriers and tetramethylene sulfone (TMS) as the solvent, noted as HTFSI-MTA-TMS, exhibited the stable electrochemical windows exceeding 5 V at −20 °C and 3.5 V at 80 °C. Benefiting from this electrolyte, the assembled MnO2-S//MoO3 button proton full battery can display an operation voltage up to 1.8 V, energy density of 44.8 Wh kg−1, and good cycling stability at room temperature when bis(trifluoromethanesulfonyl)imide manganese (II) salt (Mn(TFSI)2) is introduced into the electrolyte, and run well in a wide-temperature range (−20 °C–60 °C). The work reveals the potential of organic acid-alkali coregulated electrolytes to meet the need of energy storage in a wide-temperature range and will advance the development of high-energy proton batteries.
AB - The broad applications of rechargeable batteries urge people to develop alternative energy storage devices with sustainable resources, high capacity, long cycling life, and wide-temperature operability. Aqueous proton batteries are considered as a state-of-the-art energy storage system due to their intrinsic safety and low cost. However, aqueous electrolytes have a low boiling point and narrow electrochemical stability window, limiting their applications in wide-temperature and high-energy batteries. Herein, a hybrid organic ionic liquid electrolyte with organic alkali 1-methyl-1,2,4-triazole (MTA) protonated by organic acid bis(trifluoromethysulfonyl)imide (HTFSI) as proton carriers and tetramethylene sulfone (TMS) as the solvent, noted as HTFSI-MTA-TMS, exhibited the stable electrochemical windows exceeding 5 V at −20 °C and 3.5 V at 80 °C. Benefiting from this electrolyte, the assembled MnO2-S//MoO3 button proton full battery can display an operation voltage up to 1.8 V, energy density of 44.8 Wh kg−1, and good cycling stability at room temperature when bis(trifluoromethanesulfonyl)imide manganese (II) salt (Mn(TFSI)2) is introduced into the electrolyte, and run well in a wide-temperature range (−20 °C–60 °C). The work reveals the potential of organic acid-alkali coregulated electrolytes to meet the need of energy storage in a wide-temperature range and will advance the development of high-energy proton batteries.
KW - MoO
KW - organic acid-alkali coregulated electrolyte
KW - proton batteries (PBs)
KW - sulfur-doped MnO
KW - wide-temperature range
UR - https://www.scopus.com/pages/publications/105002263496
U2 - 10.1002/smll.202405004
DO - 10.1002/smll.202405004
M3 - 文章
C2 - 39370658
AN - SCOPUS:105002263496
SN - 1613-6810
VL - 21
JO - Small
JF - Small
IS - 14
M1 - 2405004
ER -