材料科学
共晶体系
电解质
水溶液
电池(电)
化学工程
化学稳定性
航程(航空)
离子
铝
大气温度范围
无机化学
电化学
热力学
有机化学
冶金
物理化学
复合材料
电极
化学
合金
功率(物理)
物理
工程类
作者
Xiaoyang Zhang,Rui Wang,Zixiang Liu,Quanwei Ma,Hongbao Li,Yangyang Liu,Junnan Hao,Shilin Zhang,Jianfeng Mao,Chaofeng Zhang
标识
DOI:10.1002/aenm.202400314
摘要
Abstract The development of aqueous aluminum‐ion batteries (AAIBs) is impeded by pronounced side reactions and hydrogen evolution reaction (HER). Here, an eutectic electrolyte named HEE30 (with an optimal molar ratio of 1:8:1:30 for Al(OTf) 3 , glycerol (Gly), sodium beta‐glycerophosphate pentahydrate (SG), and H 2 O) to significantly enhance the reversibility of AAIBs across a wide temperature range from −20 to 60 °C is designed. The combination of molecular dynamics simulations and operando synchrotron Fourier‐transform infrared spectroscopy reveals that the unique eutectic network significantly enhances the hydrogen bonding between Gly and H 2 O, reduces the solvation interaction of Al 3+ with active H 2 O, thereby lowering the freezing point, extending electrochemical windows and suppressing HER. The X‐ray photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD) tests demonstrate that HEE30 is capable of forming a solid electrolyte interface layer consisting of organic and inorganic components, which effectively inhibits corrosion. Additionally, operando synchrotron XRD and ex situ XPS are employed to investigate the changes in lattice peak width and position of the Prussian white cathode, as well as the reversible storage mechanism during cycling This quantitative design offer immediate advantages for the rational development of low‐cost and safe energy storage batteries, specifically tailored for wide‐temperature operation and durable cycling.
科研通智能强力驱动
Strongly Powered by AbleSci AI